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                                            <div class="trenner trenner--link ">









        <a class="trenner__link" href="https://www.tagesschau.de/wirtschaft/">
        <div class="trenner__text">
            <div class="trenner__text__topline">
                Ressort
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            <div class="trenner__text__headline">
                <h2>Wirtschaft</h2>
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            <a class="teaser__link" href="https://www.tagesschau.de/wirtschaft/verbraucher/lebensmittelpreise-fao-ukrainekrieg-afrika-mittlererosten-naherosten-101.html">
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                        <h3 class="teaser__headline-wrapper">
                            <span class="teaser__topline">Folge des Ukraine-Kriegs</span>
                            <span class="teaser__headline">Lebensmittel weltweit so teuer wie nie</span>
                        </h3>

                    </div>
                    <p class="teaser__shorttext">

                            Nicht nur in Deutschland, sondern weltweit werden Lebensmittel immer teurer. Laut der UN-Ern"ahrungsorganisation FAO haben sie sogar inzwischen ein Rekordniveau erreicht. Stark betroffen sind Nord- und Westafrika - mit gravierenden Folgen.


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                    <h3 class="teaser-xs__headline-wrapper">
                        <span class="teaser-xs__topline">Hilfspaket wegen Ukraine-Kriegs</span>
                        <span class="teaser-xs__headline">Bund will Firmen mit Milliarden entlasten

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                                                <h2>Marktbericht</h2>
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        <div class="columns twelve">
            <a class="teaser__link" href="https://www.tagesschau.de/wirtschaft/finanzen/marktberichte/marktbericht-dax-dow-oel-gold-tesla-formel-1-101.html">
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                                        <strong>
                                        Marktbericht
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                                    </span>
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                        <h3 class="teaser__headline-wrapper">
                            <span class="teaser__topline">Zinswerte gefragt</span>
                            <span class="teaser__headline">US-M"arkte ohne klare Richtung</span>
                        </h3>

                    </div>
                    <p class="teaser__shorttext">An der Wall Street gab es heute einen Eindruck, wer k"unftig Gewinner und wer Verlierer der Zinswende sein k"onnte. Entsprechend fanden die gro"sen US-B"orsen keine klare Richtung.

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                        Aktien, Wertpapiere und Devisen
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                        <h2>B"orsenkurse</h2>
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                        "Ubersicht
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                        <h2>Weltm"arkte</h2>
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                Bilder des Tages
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                <h2>Blickpunkte</h2>
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                <div class="trenner__text__topline">
                    Ziehung am Samstag
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                    <h2>lotto</h2>
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            <img class="ts-image js-image" src="/multimedia/bilder/lottozahlen-101~_v-grossgalerie16x9.jpg" alt="Lottozahlen | picture alliance/dpa" title="Lottozahlen | picture alliance/dpa"/>
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        <div class="columns twelve m-six lotto__content">

            <div class="lotto__zahlen">

                    <span class="lotto__zahlen__zahl">5</span>

                    <span class="lotto__zahlen__zahl">17</span>

                    <span class="lotto__zahlen__zahl">27</span>

                    <span class="lotto__zahlen__zahl">33</span>

                    <span class="lotto__zahlen__zahl">43</span>

                    <span class="lotto__zahlen__zahl">45</span>

            </div>

            <div class="lotto__spiele">
                <div class="lotto__spiele__spiel">Superzahl:</div>
                <div class="lotto__spiele__zahlen">
                   6
                </div>
            </div>

            <div class="lotto__spiele">
                <div class="lotto__spiele__spiel">Spiel 77:</div>
                <div class="lotto__spiele__zahlen">
                    4841318
                </div>
            </div>

            <div class="lotto__spiele">
                <div class="lotto__spiele__spiel">Super 6: </div>
                <div class="lotto__spiele__zahlen">
                    297498
                </div>
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                                                <h2>Das Wetter</h2>
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                            Am Sonntag gibts einen Wechsel aus Sonne und Wolken, dazu einzelne Schauer, die im Bergland oft als  Schnee niedergehen. Im Westen und S"udwesten bleibt es meist trocken. 4 bis 13 Grad.


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                    <h3 class="teaser-xs__headline-wrapper">
                        <span class="teaser-xs__topline">Angriff auf Muratow</span>
                        <span class="teaser-xs__headline">"Nimm das f"ur unsere Jungs"

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                                <strong>Europamagazin</strong>
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                    <h3 class="teaser-xs__headline-wrapper">
                        <span class="teaser-xs__topline">Bombardierte ukrainische Stadt</span>
                        <span class="teaser-xs__headline">"In Odessa haben wir die Russen geliebt"

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018/tagesschau.html
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml" xmlns:my="mynames" lang=""><!-- DEBUG start 21:16:40+02:00 page_id=4608 :: taz.de--><!--
		Content Management: openNewspaper www.opennewspaper.org based on TYPO3 www.typo3.org
		Community Platform: Invsision Power Board www.invisionpower.com via ipbwi.com + manufactured PHP
		Presentation Layer: XML, XSL, HTML, CSS, JS (+ toil, tears and sweat) webmaster@taz.de
	--><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<!--
			page_id :: 4608--><meta http-equiv="Content-Script-Type" content="text/javascript"></meta><meta name="robots" content="index,follow,noarchive"></meta><meta name="language" content="de"></meta><meta name="copyright" content="TAZ Verlags- und Vertriebs GmbH"></meta><title>taz.de - taz.de</title><meta name="author" content="taz. die tageszeitung"></meta><meta name="description" content="Kritischer, unabh"angiger Journalismus der linken Nachrichtenseite taz: Analysen, Hintergr"unde, Kommentare, Interviews, Reportagen. Genossenschaft seit 1992."></meta><meta name="keywords" content="taz.de, Nachrichten, News, taz, tageszeitung "></meta><meta name="taz:title" data-id="p4608" content="taz.de"></meta><meta name="generator" content="tazxslt, 0.55; "></meta><meta property="fb:pages" content="171844246207985,162775943776229,136860635948,337939896245563,185657208283671,1141409319297464,255160261177600,1252816681448318,240508363106685,669240916596907"></meta>
<!-- piwik/matomo (0.6) --><script id="piwik-init" type="text/javascript">

// ====================================================== taz piwik library === //
window.patOtaz_de = window.patOtaz_de || new Object;
window.patOtaz_de.piwik = window.patOtaz_de.piwik || new (function (debug) {

    // for a better readability
    Array.prototype.clone = Array.prototype.slice;

    // ES6 features
    var hasHistoryApi = function() {
        if ( history \&amp;\&amp; history.replaceState instanceof Function )  return true;
        return false;
    };

    // === private static members
    var version = "patOtaz_de.piwik-0.6",
        debug   =  debug || false;

    // === logging in debug mode or from outside
    var log = function(args) {
        if ( debug \&amp;\&amp; arguments.length ) {
            var items = [];
            Array.prototype.push.apply( items, arguments );
            console.log( "PIWIK-LOG:", items );
        }
        return true;
    };

    // === clean up strings with a whitelist
    var removeCharsWithWhitelist = function(validChars, inputString) {
        var regex = new RegExp( '[\^'+ validChars +']', 'g' );
        return inputString.replace( regex, ” );
    };

    // === clean up #matomo url fragment and return matomo part
    var removeHashParam = function(fragment_key) {
        if ( fragment_key === undefined )  return ”;
        var href          = location.href;
        var href_base     = href.split('#')[0];
        var fragment_pos  = href.indexOf('#');
        var fragment_full = href.substring( fragment_pos +1 );
        if ( fragment_pos >0  \&amp;\&amp;  fragment_key.length >0 ) {
            var fragment_regex = new RegExp( '(.*?)#?'+ fragment_key +':([\^#]+)#?(.*)' );
            var fragment_match = fragment_full.match( fragment_regex );
            if ( fragment_match ) {
                var fragment_this    = fragment_match[2];
                var fragment_lhs     = fragment_match[1];
                var fragment_rhs     = fragment_match[3];
                var fragment_cleaned = ( fragment_lhs ? fragment_lhs : ” )+( fragment_lhs \&amp;\&amp; fragment_rhs ? '#' : ” )+( fragment_rhs ? fragment_rhs : ” );
                if ( fragment_this.length >0 ) {
                    var new_href = href_base +( !fragment_lhs \&amp;\&amp; !fragment_rhs ? ” : '#' )+ fragment_cleaned;
                    if ( hasHistoryApi )  history.replaceState( {}, document.title, new_href );
                    return fragment_this;
                }
            }
        }
        return ”;
    };

    // === track search results list page
    var trackSiteSearch = function(keyword, category, count) {
        var tmp = Array.prototype.clone.call( arguments );
        tmp.unshift("trackSiteSearch");
        _paq.push( tmp );
        log( "search result", { keyword:keyword, category:category, count:count } );
        return true;
    };

    // === track funnels
    var trackFunnel = function(funnel, category) {
        if ( funnel.length ) {
            _paq.push([ 'trackEvent', category, 'Funnel', funnel ]);
            log( "goal event", { funnel:funnel, category:category } );
        }
        return true;
    };

    // === track events
    var trackEvent = function(category, action, name, value) {
        var tmp = Array.prototype.clone.call( arguments );
        tmp.unshift("trackEvent");
        _paq.push( tmp );
        log( "event", { category:category, action:action, name:name, value:value } );
        return true;
    }

    // === debugging
    log( version );

    // === public interface
    this.log              =log;
    this.removeHashParam  =removeHashParam;
    this.trackSiteSearch  =trackSiteSearch;
    this.trackFunnel      =trackFunnel;
    this.trackEvent       =trackEvent;
    // this.trackPageType    =trackPageType;

})(false); // patOtaz_de.piwik


// ====================================================== piwik bucket === //
window._paq = window._paq || [];


// ====================================================== piwik setup === //
(function(){

    // === private members
    var p = patOtaz_de.piwik,
        o = {
            version               :"0.6" // String
            , piwik_script        :"https://taz.de/stats/piwik.php" // String
            , page_id_enc         :"p4608" // String
            , page_title_enc      :"p4608: taz.de" // String
            , custom_url_enc      :"/!p4608" // String
            , channel             :"web" // String
            , area                :"Startseite" // String
            , department          :"p4608" // String
            , piwik_site_id       : 1  // Number
            , is_tag              : false  // Boolean
            , is_article          : false  // Boolean
            , has_tags            : false  // Boolean
    };

    // === url decode strings
    o.page_id         =decodeURIComponent( o.page_id_enc    );
    o.page_title      =decodeURIComponent( o.page_title_enc );
    o.custom_url      =decodeURIComponent( o.custom_url_enc );

    // === page title
    !function( node ) {
        try {
            var id    = node.getAttribute('data-id').toString()
                , title = node.getAttribute('content').toString()
                ;
            o.title = ( id.length >0 \&amp;\&amp; title.length >0 ) ? id +": "+ title : "ZOMBIE";
        } catch (err) {
            o.title = "ZOMBIE";
            console.log("ERROR-piwik: page title");
        }
    } ( document.head.querySelector( 'meta[ name="taz:title" ]' ) );

    // === page url
    o.url = location.href;

    // === process and clean #matomo fragment, if present
    o.url_fragment = decodeURIComponent( p.removeHashParam('matomo') );
    if ( o.url_fragment.length >0 )  o.custom_url += '#'+ o.url_fragment;

    // === track tags
    if ( o.is_article \&amp;\&amp; o.has_tags ) {
        o.tag_list=[];
        o.tag_list.toString = function() {
            var string="";
            // Get tag title and concat. So that no permutations are stored for the same set of tags, pull tag titles sorted by their id.
            this.sort( function(a,b){ return ( parseInt(a.id) - parseInt(b.id) ) } ).forEach( function(tag){ string += tag.title +";" });
            return string;
        };
        !function( tag_list ) {
            var count=0;
            try {
				tag_list.forEach( function(tag) {
					o.tag_list.push({
						title     :tag.getAttribute('content')
						,id       :tag.getAttribute('data-tag-id')
						,category :tag.getAttribute('data-tag-category')? tag.getAttribute('data-tag-category'): "PLAIN-VANILLA"
					});
					count++;
				});
                if (count===0)  o.tag_list.push({ title:'ZOMBIE', id:0, category:'ZOMBIE' });
                o.tag_list.string = o.tag_list.toString();
            } catch(err) {
                o.tag_list.push({ title:'ZOMBIE', id:0, category:'ZOMBIE' });
                console.log("ERROR-piwik: tag_list");
            }
        }( document.head.querySelectorAll("meta[name='taz:tag']") );
    }

    // === setup piwik bucket
    _paq.push([ "setCustomUrl"       ,o.custom_url ]);
    _paq.push([ "setDocumentTitle"   ,o.page_title ]);
    _paq.push([ "setCustomVariable"  ,1 ,"channel"    ,o.channel    ,"page" ]);
    _paq.push([ "setCustomVariable"  ,2 ,"area"       ,o.area       ,"page" ]);
    _paq.push([ "setCustomVariable"  ,3 ,"department" ,o.department ,"page" ]);
    if ( o.is_article \&amp;\&amp; o.has_tags )  _paq.push([ "setCustomVariable", 4, "tag", o.tag_list.toString(), "page" ]);
    _paq.push([ "trackPageView"      ]);
    _paq.push([ "enableLinkTracking" ]);

    // === load and setup piwik tracking
    (function() {
        var d=document
          , g=d.createElement("script")
          , s=d.getElementById("piwik-init")
          ;
        _paq.push([ "setTrackerUrl" ,o.piwik_script  ]);
        _paq.push([ "setSiteId"     ,o.piwik_site_id ]);
        g.type   = "text/javascript";
        g.id     = "piwik-loaded";
        g.async  = true;
        g.defer  = true;
        g.src    = "https://taz.de/lib/share/js/piwik.js";
        g.onload = function() { p.log( 'setup', o ) }
        s.parentNode.insertBefore( g, s );
    })();

    // === tag tracking
    if ( o.is_article \&amp;\&amp; o.has_tags ) {
        o.tag_list.forEach( function(tag) {    p.trackEvent( "TAG", "TAG-ARTICLE-"+ tag.category, "TAG - t"+ tag.id +": "+ tag.title ) });
    }
    if ( o.is_tag ) {
        p.trackEvent( "TAG", "TAG-LANDINGPAGE", "TAG - "+ o.title );
    }

    // === debugging
    //p.log( _paq );

})(); // piwik setup

    </script><!-- end: piwik/matomo (0.6) -->
<script type="text/javascript">

(function(){


	// # fil 2021-09-16 # Intention? sieht aus, als w"urde es die Redirect-URL matchen, die kann ja aber nicht location.href sein?
	if ( ((location.href.match(/goMobile/g) || []).length) > 1 ) {
		console.log( 'prevent loop' );
		return
	}


	if ( readCookie('ratioURL_channel') == 'web' ){
 		return;
		// web view was selected explicitly
	}

	// var getWidth = (screen.width > screen.height) ? screen.height : screen.width;	// # fil 2021-09-16 # klarer?
	var getWidth;
	if (screen.width > screen.height){
		   getWidth = screen.height;
		} else {
		   getWidth = screen.width;
	}


	if (getWidth < 551) {
		//mobile
		var goto = location.pathname;
		if (  (/;web/).test( location.href ) ){
			//prevent loop. stay desktop
			return false;

		}

		// to do: look if this is running	# fil 2021-09-16 # versteh ich nicht.
		// # fil 2021-09-16 # Intention? sieht aus, als w"urde es die Redirect-URL matchen, die kann ja aber nicht location.href etc sein?
		if ( (/goMobile/).test( location.search ) \&amp;\&amp; (/count/).test( location.href ) || ( location.search.indexOf('goMobile') > 1 ) ){	// back here despite cache-killer: give up.

				if ((/;web/).test( location.pathname )) {
					location.href = goto
					// # fil 2021-09-16 # setzt location.href=location.pathname - wozu??? Loop-Gefahr!

				};
				return false;
			}

		if( (/moby/).test( readCookie('ratioURL_channel') ) ) { // back here despite cookie: reload w/ cache-killer to prevent loop
		// Google-Bot needs this to see mobile (https://search.google.com/search-console/inspect fil 2018-12-03)
		location.href = '/count/redirect/go-mobile-nocache'+ goto
			+( location.search ? location.search +'\&amp;' : '?' ) +'goMobile2='+ (new Date()).getTime()
			+location.hash;

			// # fil 2021-09-16 # wird serverseitig nach goto+location.search umgeleitet, ?goMobile2=… wird dabei entfernt. Sinnvoll?
			return;
			}

		// try to set channel cookie …
		document.cookie = 'ratioURL_channel=moby; domain=taz.de; path=/';

		if( (/moby/).test( readCookie('ratioURL_channel') ) ) {	// … cookie was successfully set: reload …
			if (location.search.indexOf('nocache') != -1) return;	// old cache killer for transition period
			location.reload( true );
			return;
			}
		else {						// … setting cookie failed: load explicit channel url …
			// # fil 2021-09-16 # besser?: Cookie bei redirect serverseitig setzen?
			if (location.search.indexOf('nocache') != -1) return;	// old cache killer for transition period
			if( goto =='/' )
				goto = '/!p4608;moby/';
			else	goto = goto.replace(/[/]\$/,';moby/');
			location.href = '/count/redirect/go-mobile-nocookie'+ goto
				+location.search
				+location.hash;
			return;
			}

		} else {
		//desktop
		}

		// vanilla js cookie reader
		function readCookie(name) {
			var nameEQ = name + "=";
			var ca = document.cookie.split(';');
			for(var i=0;i < ca.length;i++) {
				var c = ca[i];
				while (c.charAt(0)==' ') c = c.substring(1,c.length);
				if (c.indexOf(nameEQ) == 0) return c.substring(nameEQ.length,c.length);
			}
			return null;
		}


	})();

		</script><link rel="preload" href="//data-2d3a3249cd.taz.de/iomm/latest/manager/base/es6/bundle.js" as="script" id="IOMmBundle"></link><link rel="preload" href="//data-2d3a3249cd.taz.de/iomm/latest/bootstrap/loader.js" as="script"></link><script type="text/javascript" src="//data-2d3a3249cd.taz.de/iomm/latest/bootstrap/loader.js"></script><link rel="preload" href="/lib/share/fonts/DroidSerif-Regular-webfont.woff2" type="font/woff2" crossorigin="anonymous" as="font"></link><link rel="preload" href="/lib/share/fonts/AktivGroteskBold/AktivGrotesk_W_Bd.woff2" type="font/woff2" crossorigin="anonymous" as="font"></link><link rel="preload" href="/lib/share/fonts/fontawesome-reduced.woff2" type="font/woff2" crossorigin="anonymous" as="font"></link><link rel="preload" href="/lib/share/fonts/Taz_5_.woff2" type="font/woff2" crossorigin="anonymous" as="font"></link><link rel="preload" href="/lib/share/fonts/Taz_6_.woff2" type="font/woff2" crossorigin="anonymous" as="font"></link><link rel="preload" href="/lib/share/fonts/Taz_7_.woff2" type="font/woff2" crossorigin="anonymous" as="font"></link><link rel="preload" href="/lib/share/fonts/Taz_8_.woff2" type="font/woff2" crossorigin="anonymous" as="font"></link><link rel="preload" href="/lib/share/fonts/Taz_4_italic.woff2" type="font/woff2" crossorigin="anonymous" as="font"></link><link rel="preload" href="/lib/share/fonts/Taz_4_.woff2" type="font/woff2" crossorigin="anonymous" as="font"></link><link rel="preload" href="/lib/share/fonts/Taz-Bold_tazze_private_only.woff2" type="font/woff2" crossorigin="anonymous" as="font"></link><link rel="preload" href="/lib/share/fonts/Quodana.woff2" type="font/woff2" crossorigin="anonymous" as="font"></link><link rel="preload" href="/lib/ch/moby/pix/tazze46.png" as="image" media="(min-width: 81px)"></link><link rel="preload" href="/lib/ch/web/pix/tzi_logo_120px.png" as="image" media="(min-width: 120px)"></link><link rel="preload" href="/lib/ch/web/pix/tazze_30_d50d2e.png" as="image" media="(min-width: 20px)"></link><link rel="canonical" href="https://taz.de/"></link><link rel="alternate" type="application/rss+xml" title="taz.de - taz.de" href="rss.xml"></link><link rel="home" type="text/html" title="taz.de - Schlagzeilen" href="/"></link><link rel="copyright" type="text/html" title="Impressum" href="/6/impressum/"></link><link rel="stylesheet" type="text/css" media="screen, print" href="/lib/ch/web/css/news2020-12-08_38.css"></link><link href="/lib/ch/web/css/local/print.css" type="text/css" rel="stylesheet" media="print"></link><!--[if lte IE 8]><style type="text/css">
			p.article,
			.sect_article >.sectbody >h6,
			p.caption,
			.price-tag >.info,
			.ad_badge,
			li.tag >a,
			.secthead > ul.toolbar,
			.sect_meta,
			.sect_service >.sectbody,
			.head >.search >.frame >input,
			.person >h5 {
  			font-family: Verdana, DejaVu Sans, Bitstream Vera Sans, Helvetica, sans-serif;
  		}
		</style><![endif]--><script type="text/javascript" src="/lib/ch/moby/js/local/cmp.js"></script><script>

			if(! HTMLCollection.prototype.last ) HTMLCollection.prototype.last = function(){ return this[ this.length -1 ]; };
			if(! document.getLatestElement ) document.getLatestElement = function(){
				var scripts = document.getElementsByTagName("script"); var thisScript = scripts[scripts.length - 1];
				return ( this.currentScript || thisScript ).previousSibling;
				};

		</script><script type="text/javascript" src="/lib/ch/web/js/2020-12-08_38.js"></script><!-- piwik/matomo (custom-0.2) --><script class="piwik-custom" type="text/javascript">

// ====================================================== piwik customizing === //
(function(){

    // === private members
    var p = patOtaz_de.piwik,
        o = {
            version           :"custom-0.2" // String
            , page_id_enc     :"p4608" // String
            , form_funnel     :"" // String
            , search_term     :"" // String
            , rootline        :"" // String
            , is_article      : false  // Boolean
            , is_corp         : false  // Boolean
            , is_searchresult : false  // Boolean
            , is_form         : false  // Boolean
            , search_count    : NaN  // Number
    };

    // === url decode strings
    o.page_id = decodeURIComponent( o.page_id_enc );

    // === track search results
    if ( o.is_searchresult )  p.trackSiteSearch( o.search_term, false, o.search_count );

    // === track events
    if ( window.jQuery ) {
        \$(document).ready(function(){

            if ( \$("#pages.news >.article").length ) { p.trackEvent( 'TZI', 'displayed', 'ARTIKELAUFRUF') };
            if ( \$("#pages.news >.article.longread").length ) { p.trackEvent( 'TZI', 'displayed', 'ARTIKELAUFRUF-LONGREAD') };

            if ( \$("#pages .body article form").length ) {
                p.trackEvent( 'Verlag', 'displayed', normalizePath(location.pathname.split(';')[0]) ) ;

                };


            // lookup for whole href because of other url scheme when reload with hints after form submit
            if ( (/172913/).test( location.href ) ) {

                var formPath = 172913;
                var withHints =  \$('.form .sectbody .error').length ? 'withHints ' : 'new ';

                console.log(formPath + ': ' + withHints );
                p.trackEvent( 'Verlag', 'displayed', formPath + ': ' + withHints ) ;

                let checkList = {};
                checkList.keyup = ['#from', '#abo_name','#abo_vorname','#abo_land','#abo_name1','#abo_plz','#abo_ort','#abo_strasse','#abo_tel',
                                   '#rg_vorname','#rg_name','#rg_strasse','#rg_land','#rg_plz','#rg_ort','#rg_tel',
                                   '#iban','#bic', '#ktoinh', 'textarea[name="bem"]' ];
                checkList.focus = ['#from', '#abo_name','#abo_vorname','#abo_land','#abo_name1','#abo_plz','#abo_ort','#abo_strasse','#abo_tel',
                                   '#rg_vorname','#rg_name','#rg_strasse','#rg_land','#rg_plz','#rg_ort','#rg_tel',
                                   '#iban','#bic', '#ktoinh', 'textarea[name="bem"]' ];

                checkList.mousedown = [ '#nutzungsbedingungen', '#datenschutz', 'select[name="zahlungsart"]', 'input[type="submit"]' ];

                checkList.keyup.forEach(function(item){
                    \$( item ).one('keyup ', function(){
                        console.log( formPath + ': ' + item + ' keyup ' + withHints  );
                        p.trackEvent( 'Verlag', 'keyup', formPath + ': ' + item + ' keyup ' + withHints    ) ;

                    } );
                });
                checkList.focus.forEach(function(item){
                    \$( item ).one('focus ', function(){
                        console.log( formPath + ': ' + item + ' focus ' + withHints  );
                        p.trackEvent( 'Verlag', 'focus', formPath + ': ' + item + ' focus ' + withHints    ) ;

                    } );
                });
                // use this for checkboxes, select options and submit-Button
                checkList.mousedown.forEach(function(item){
                    \$( item ).one('mousedown ', function(){
                        console.log( formPath + ': ' + item + ' mousedown ' + withHints  );
                        p.trackEvent( 'Verlag', 'mousedown', formPath + ': ' + item + ' mousedown ' + withHints    ) ;

                    } );
                });

                };

            if ( (/115932/).test( location.href ) ) {

                var formPath = 115932;
                console.log(formPath  );
                p.trackEvent( 'Verlag', 'displayed', formPath  ) ;

                let checkList = {};
                checkList.keyup = ["input.euro", "input.email", "input.IBAN", "input.fullName" ];
                checkList.focus = ["input.euro", "input.email", "input.IBAN", "input.fullName" ];
                checkList.mousedown = [ "select[name='tzi-praemie[enrol][interval]']", "select[name='tzi-praemie[enrol][start]']",
                                        "fieldset#tzi-praemie_step:nth(0) button.default.submit", "fieldset#tzi-praemie_step:nth(1) button.default.submit", "fieldset#tzi-praemie_step:nth(2) button.default.submit",
                                        "fieldset#tzi-praemie_step:nth(0) button.alt.submit", "fieldset#tzi-praemie_step:nth(1) button.alt.submit", "fieldset#tzi-praemie_step:nth(2) button.alt.submit" ];

                checkList.keyup.forEach(function(item){
                    \$( document ).one('keyup ', item, function(){
                        console.log( formPath + ': ' + item + ' keyup '  );
                        p.trackEvent( 'Verlag', 'keyup', formPath + ': ' + item + ' keyup '   ) ;
                    } );
                });
                checkList.focus.forEach(function(item){
                    \$( document ).one('focus ', item, function(){
                        console.log( formPath + ': ' + item + ' focus '  );
                        p.trackEvent( 'Verlag', 'focus', formPath + ': ' + item + ' focus '    ) ;
                    } );
                });
                // use this for checkboxes, select options and submit-Button
                checkList.mousedown.forEach(function(item){
                    \$( document ).one('mousedown ', item, function(){
                        console.log( formPath + ': ' + item + ' mousedown ' );
                        p.trackEvent( 'Verlag', 'mousedown', formPath + ': ' + item + ' mousedown '    ) ;
                    } );
                });
            };

            if ( (/170378/).test( location.href ) ) {

                var formPath = 170378;
                console.log(formPath  );
                p.trackEvent( 'Verlag', 'displayed', formPath  ) ;

                let checkList = {};
                checkList.keyup = ["input.euro", "input.email", "input[name='tzi-aufstocker[Eingabe_Aufstocken][TziNr]']" ];
                checkList.focus = ["input.euro", "input.email", "input[name='tzi-aufstocker[Eingabe_Aufstocken][TziNr]']" ];
                checkList.mousedown = [ "select[name='tzi-aufstocker[Eingabe_Aufstocken][Intervall]']", "select[name='tzi-aufstocker[Eingabe_Aufstocken][Start]']", "input.submit" ];

                checkList.keyup.forEach(function(item){
                    \$( document ).one('keyup ', item, function(){
                        console.log( formPath + ': ' + item + ' keyup '  );
                        p.trackEvent( 'Verlag', 'keyup', formPath + ': ' + item + ' keyup '   ) ;
                    } );
                });
                checkList.focus.forEach(function(item){
                    \$( document ).one('focus ', item, function(){
                        console.log( formPath + ': ' + item + ' focus '  );
                        p.trackEvent( 'Verlag', 'focus', formPath + ': ' + item + ' focus '    ) ;
                    } );
                });
                // use this for checkboxes, select options and submit-Button
                checkList.mousedown.forEach(function(item){
                    \$( document ).one('mousedown ', item, function(){
                        console.log( formPath + ': ' + item + ' mousedown ' );
                        p.trackEvent( 'Verlag', 'mousedown', formPath + ': ' + item + ' mousedown '    ) ;
                    } );
                });
            };

            if ( \$("body.homepage .sect_number-teaser2").length ) {  p.trackEvent( 'TZI', 'displayed', 'COUNTER-HOMEPAGE') };
            if ( \$("body.isdir:not(.homepage) #pages.news .sect_number-teaser2").length ) { p.trackEvent( 'TZI', 'displayed', 'COUNTER-RESSORTSEITE') };
            if ( \$("#pages.corp .sect_number-teaser2").length ) {  p.trackEvent( 'TZI', 'displayed', 'COUNTER-VERLAGSSEITE') };

            \$(document).on("click", "body.homepage .sect_number-teaser2",function(event){ p.trackEvent( 'TZI', 'clicked', 'COUNTER-HOMEPAGE'  ) });
            \$(document).on("click", "body.isdir:not(.homepage) #pages.news .sect_number-teaser2",function(event){ p.trackEvent( 'TZI', 'clicked', 'COUNTER-RESSORTSEITE'  ) });
            \$(document).on("click", "#pages.corp .sect_number-teaser2",function(event){ p.trackEvent( 'TZI', 'clicked', 'COUNTER-VERLAGSSEITE'  ) });

            if ( \$("#pages.news >.article").length \&amp;\&amp; \$("#tzi-paywahl-fg").length ) {
            p.trackEvent( 'TZI', 'displayed', 'ARTIKELAUFRUF_mit_Layer') };
            if ( \$("#pages.news >.article").length \&amp;\&amp; !\$("#tzi-paywahl-fg").length ) {
            p.trackEvent( 'TZI', 'displayed', 'ARTIKELAUFRUF_ohne_Layer') };

            \$(document).on("click", "#tzi-paywahl-fg .tzi-paywahl__yes"        ,function(event){ p.trackEvent( 'TZI', 'clicked', 'LAYER-JA'            ) });
            \$(document).on("click", "#tzi-paywahl-fg .tzi-paywahl__close"      ,function(event){ p.trackEvent( 'TZI', 'clicked', 'LAYER-GERADE-NICHT'  ) });
            \$(document).on("click", "#tzi-paywahl-fg .tzi-paywahl__subscriber" ,function(event){ p.trackEvent( 'TZI', 'clicked', 'LAYER-SCHON-DABEI'   ) });
            \$(document).on("click", "#tzi-shackle    .tzi-shackle__yes"        ,function(event){ p.trackEvent( 'TZI', 'clicked', 'LASCHE-JA'           ) });

            \$(document).on("click", ".sect_end a"                         ,function(event){ p.trackEvent( 'Element', 'clicked', 'ABBINDER'             ) });
            \$(document).on("click", "#mainFlyout a"                       ,function(event){ p.trackEvent( 'Element', 'clicked', 'FLYOUT'               ) });
            \$(document).on("click", "ul.navbar >li >a"                    ,function(event){ p.trackEvent( 'Element', 'clicked', 'NAVBAR'               ) });

        /*  navi-tracking paused
            \$(document).on("click", "ul.navbar.news.newsnavigation a "    ,function(event){ p.trackEvent( 'Navi', 'R_Desktop_MenuImHeader', \$(this).find("span").text() ) });
            \$(document).on("click", "#mainFlyout .navigation.news a"      ,function(event){ p.trackEvent( 'Navi', 'R_Desktop_Flyout', \$(this).find("span").text() )       });
            \$(document).on("click", "ul.navbar.corp.newsnavigation a "    ,function(event){ p.trackEvent( 'Navi', 'V_Desktop_MenuImHeader', \$(".head >h1 a").text() + ' > ' + \$(this).find("span").text() ) });
            \$(document).on("click", "#globalnavigation a"                 ,function(event){ p.trackEvent( 'Navi', 'V_Desktop_Schwarze_Navi', \$(this).find("span").text() )});
            \$(document).on("click", "#mainFlyout .navigation.corp a"      ,function(event){ p.trackEvent( 'Navi', 'V_Desktop_Flyout_tazze', \$(this).find("span").text() ) });
            \$(document).on("click", "#footer .sitemap > .news a"          ,function(event){ p.trackEvent( 'Navi', 'R_Desktop_Footer', \$(this).find("span").text() ) });
            \$(document).on("click", "#footer .sitemap > .corp a"          ,function(event){ p.trackEvent( 'Navi', 'V_Desktop_Footer', \$(this).find("span").text() ) });
        */
            \$(document).on("click", "ul.navbar >li.more ul.flyout >li >a" ,function(event){ p.trackEvent( 'Element', 'clicked', 'NAVBARMORE'           ) });
            \$(document).on("click", ".insert.dep4534"                     ,function(event){ p.trackEvent( 'Element', 'clicked', 'EINSCHUB1'            ) });
            \$(document).on("click", ".insert.dep4536"                     ,function(event){ p.trackEvent( 'Element', 'clicked', 'TRENNER'              ) });
            \$(document).on("click", ".insert.dep4777"                     ,function(event){ p.trackEvent( 'Element', 'clicked', 'EINSCHUB2'            ) });
            \$(document).on("click", ".insert.dep4219"                     ,function(event){ p.trackEvent( 'Element', 'clicked', 'EINSCHUB3'            ) });
            \$(document).on("click", ".insert.dep5178"                     ,function(event){ p.trackEvent( 'Element', 'clicked', 'MOBEINSCHUB1'         ) });
            \$(document).on("click", ".insert.dep5179"                     ,function(event){ p.trackEvent( 'Element', 'clicked', 'MOBEINSCHUB2'         ) });
            \$(document).on("click", ".insert.dep5180"                     ,function(event){ p.trackEvent( 'Element', 'clicked', 'MOBEINSCHUB3'         ) });
            \$(document).on("click", ".insert.dep5181"                     ,function(event){ p.trackEvent( 'Element', 'clicked', 'MOBEINSCHUB4'         ) });
            \$(document).on("click", ".insert.dep4755"                     ,function(event){ p.trackEvent( 'Element', 'clicked', 'EINSCHUBNORD'         ) });
            \$(document).on("click", ".insert.dep4828"                     ,function(event){ p.trackEvent( 'Element', 'clicked', 'EINSCHUBOEKE'         ) });
            \$(document).on("click", ".insert.dep4832"                     ,function(event){ p.trackEvent( 'Element', 'clicked', 'EINSCHUBPOLITIK'      ) });
            \$(document).on("click", ".insert.dep5013"                     ,function(event){ p.trackEvent( 'Element', 'clicked', 'EINSCHUBSPORT'        ) });
            \$(document).on("click", ".insert.dep5020"                     ,function(event){ p.trackEvent( 'Element', 'clicked', 'EINSCHUBGESELLSCHAFT' ) });
            \$(document).on("click", ".insert.dep4956"                     ,function(event){ p.trackEvent( 'Element', 'clicked', 'EINSCHUBKULTUR'       ) });
            \$(document).on("click", ".insert.dep4939"                     ,function(event){ p.trackEvent( 'Element', 'clicked', 'EINSCHUBPAYWAHL'      ) });
            \$(document).on("click", ".insert.dep4704"                     ,function(event){ p.trackEvent( 'Element', 'clicked', 'EINSCHUBBERLIN'       ) });
            \$(document).on("click", ".sect_seealso a"                     ,function(event){ p.trackEvent( 'Element', 'clicked', 'COMBOLINKBOX'         ) });


// home page all news teaser

// mar: tracking aller Startseiten-Teaser am 04.12. deaktiviert

/*

            \$(document).on("click", ".sect_tdt >ul >li > a" ,function(event){
                p.trackEvent( 'Element', 'clicked', 'THEMEN DES TAGES ' + parseInt( \$(this).parent().index() + 1 )  );
            });

            \$(document).on("click", "#pages.news.home >.news.page a.nolead.objlink" ,function(event){
                var teaserNr = parseInt(   \$(this).parents( 'li.brief' ).index(  'li.brief'  ) + 1  );
                p.trackEvent( 'Element', 'clicked', 'Home > Ressort: Newskamin Miniteaser Nr: ' + teaserNr  );
            });
	    */
	    // mar teilreaktivierung Startseitenteaser - nur Newskamin
            \$(document).on("click", "#pages.news.home >.news.page.first_page a.article.objlink" ,function(event){
                // newskamin or not
                var ressortName = \$(this).parents('.news.page').find(' .nose > h2 > a > span ').text() == ” ? 'Newskamin' : \$(this).parents('.news.page').find(' .nose > h2 > a > span ').text();
                var teaserNr = ressortName == 'Newskamin' ?  parseInt(   \$(this).parents( 'li.article:not(.brief)' ).index(  'li.article:not(.brief)'  ) + 1 ) : parseInt(   \$(this).parents( 'li.article' ).index() + 1 );
                var schwerpName = \$(this).parents('.sect_spb').find('.secthead > h2 > a > span ').text();
                p.trackEvent( 'Element', 'clicked', 'Home > Ressort: ' +  ressortName + ' ' + schwerpName +  ', Nr: ' + teaserNr  );
            });


            \$(document).on("click", ".article .tail .sect_related a"  ,function(event){ p.trackEvent( 'Element', 'clicked', 'WEITERE-ARTIKEL' );  });
            \$(document).on("click", ".news.article.page .tail .sect_adr a"  ,function(event){p.trackEvent( 'Element', 'clicked', 'Verlagsplatz im Artikel' ) });
            \$(document).on("click", ".news.article.page ~ div[class*='thema_clip'] a"  ,function(event){ p.trackEvent( 'Element', 'clicked', 'Schwerpunkt-Clip Artikelebene ' )  });
            \$(document).on("click", ".news.page .abtest.testshow a"  ,function(event){ p.trackEvent( 'Element', 'clicked', \$( this ).closest(".abtest.testshow" ).attr("class").replace("testshow","").replace("rack","").replace("first_rack","") ) });

            \$(document).on("click", ".sect_service a", function(event){
                p.trackEvent( 'Element', 'clicked', 'SERVICEBOX: ' + \$(this).attr('href') ) });
            \$(document).on("click", ".sectfoot li.shariff-button", function(event){
                p.trackEvent( 'Element', 'clicked', 'SOCIAL-MEDIA-BUTTON: ' + \$(this).attr('class').split(" ")[1]  )
                });

            // mar: scroll detection: Add elem to "detectElement" and text to "trackingActionText" arrays
            var detectElement = [ \$('.shariff'), \$('.article:not(.longread) .sect_related:visible'), \$('.news.article.page:not(.longread) .tail .sect_adr:visible'), \$('.news.article.page:not(.longread) ~ div[class*="thema_clip"]'), \$( 'link + form[action*="172913"] input[type="submit"]' ), \$( 'link + form[action*="172913"] input' ).first(), \$( 'link + form[action*="172913"] input#iban' ).first(), \$(' .body #tzi-praemie '), \$(' .body #tzi-aufstocker ')   ];
            var scrollToDetected = []; // detect each only once
            var trackingActionText = [ 'zu Social Media Buttons gescrollt', 'zu weitere Artikel gescrollt', 'zum Verlagsplatz (Artikel) gescrollt', 'zum Schwerpunkt-Clip gescrollt', '172913: Zum Submit-Button gescrollt', '172913: Zum ersten Input-Feld gescrollt', '172913: Zu IBAN gescrollt', '115932: tzi Unterst"utzer werden Main', '170378: Aufstocker Form Main' ];

            \$(window).on('scroll', function() {
               for (var i = 0; i < detectElement.length; i++) {
                var scrElem = detectElement[i];
                if ( scrollToDetected[i] === undefined \&amp;\&amp; scrElem.length \&amp;\&amp; (elemReached(scrElem)) ) {
                    _paq.push([ 'trackEvent', 'Element', 'scrolled', trackingActionText[i] ]);
                    console.log( 'Element', 'scrolled', trackingActionText[i] );
                    scrollToDetected[i] = true;
                }
              }

            \$( ".abtest.testshow" ).each(function( i ) {
                var scrElem = \$( this );

                if ( scrollToDetected[i + 1000] === undefined \&amp;\&amp; scrElem.length \&amp;\&amp; (elemReached(scrElem)) ) {
                    _paq.push([ 'trackEvent', 'Element', 'scrolled', \$( this ).attr('class').replace('testshow',”).replace('rack',”).replace('first_rack',”) ]);
                    scrollToDetected[i + 1000] = true;
                }

                });
            });

            function elemReached(scrElem) {
                    var docViewTop = \$(window).scrollTop(); var docViewBottom = docViewTop + \$(window).height();
                    var elemTop = \$(scrElem).offset().top + 40; return ((elemTop <= docViewBottom) \&amp;\&amp; (elemTop >= docViewTop))
                }


            function normalizePath( str ){
              return isNaN(str.slice(-1)) ? str : str + '/' ;
            }

        }); // \$(document).ready()
    } // track events

    // === debugging
    p.log( 'custom', o );
    //console.log( "output _paq: ", _paq );

})(); // piwik customizing

    </script><!--IVW--><script>
        var googletag = googletag || {}; googletag.cmd = googletag.cmd || [];

        function loadgptScript(){

                \$.getScript("https://www.googletagservices.com/tag/js/gpt.js");

        (function(){
                var adArea = 'Startseite';
                var page_id = 'p4608';


                googletag.cmd.push( function() {
                        var pa = googletag.pubads();
                        pa.setForceSafeFrame(true);
                        pa.collapseEmptyDivs();
                        pa.setTargeting('position', [ adArea ]);
      //pa.setTargeting('test', ['fireplace']); //       * * * test only ! * * *
      //pa.setTargeting('test', ['wallpaper']);   //       * * * test only ! * * *
      pa.setTargeting('page_id', ['p4608']);
                        if( location.protocol =='https' )
                                pa.setTargeting('ssl', ['ja']);
                        googletag.enableServices();
                        });
                })();
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  // mar: start googletagservices AFTER consent
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        loadgptScript()
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        __tcfapi('addEventListener', 2, function(tcData,success){
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                loadgptScript()
              }
          }
        });
    }

        </script><script>
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	(function() {
		if( !window.filOtaz_de )		window.filOtaz_de		= Object;
		if( !window.filOtaz_de.ads )		window.filOtaz_de.ads		= Object;
		if( !window.filOtaz_de.ads.gpt )	window.filOtaz_de.ads.gpt	= Object;

        var sizes = {
             'artikel_medrec-1'    :[300,250]
            ,'artikel_medrec-2'    :[300,250]
            ,'artikel_medrec_mitte' :[300,250]
            ,'ros_sidebar-1'       :[300,250]
            ,'ros_sidebar-2'       :[300,100]
            ,'uebersicht_medrec-1' :[300,250]
            ,'uebersicht_medrec-2' :[300,250]
            ,'uebersicht_medrec-3' :[300,250]
            ,'uebersicht_medrec-4' :[300,250]
            ,'uebersicht_medrec-5' :[300,250]
            ,'uebersicht_board-1'  :[624,150]
            ,'ros_billboard-1'     :[870,250]
            ,'mobile_banner-1'     :[[300,250],[320,50],[320,100]]
            ,'mobile_banner-2'     :[[300,250],[320,50],[320,100]]
            ,'mobile_banner-3'     :[[300,250],[320,50],[320,100]]
            ,'mobile_banner-4'     :[[300,250],[320,50],[320,100]]
            ,'ros_top-links'       :[[120,600],[160,600],[300,600]]
            ,'ros_top-mitte'       :[[728,90],[970,90]]
            ,'ros_top-rechts'      :[[120,600],[160,600],[300,600]]
            ,'ros_leaderboard-1'   :[728,90]
            ,'fireplace-mitte'     :[[970,90],[728,90]]
            ,'fireplace-links'     :[160,601]
            ,'fireplace-rechts'    :[160,600]
            ,'fireplace_bg'        :[1,1]
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      roadblocks = {
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        ,'ros_billboard-1' :['fireplace_mitte']
        ,'ros_top-rechts'  :['fireplace_mitte']
      };


		// general ad handling

		// --> to be triggered for ad_zone if ad is (to be) delivered
		filOtaz_de.ads.fitIn = function( container ) {	// make space for ad in layout
			var container = \$( container );
//console.log('fit '+ container.attr('id') );
			if( !container.is('.ad_zone') ) return;
			var packing = container.parent('.ad_bin');
			packing.addClass('shown');
			container.addClass('ad_zone_shown');
			if( container.hasClass('ad_zone_contentad') ) {
				packing.prev('.sect_leads').addClass('aded_'+( container.height() >120 ?'big' :'small' ) );
				var badge = container.hasClass('ad_zone_sold') ? 'Anzeige' : 'taz-Angebot';
				container.before('<div class="ad_badge">'+ badge +'</div>');
				}
			container.trigger('TAZadInserted').trigger('TAZboxChange');
			};

		// --> to be triggered for ad_zone if no ad is (to be) delivered
		// redundant?
		filOtaz_de.ads.reclaim = function( container ) {	// remove whitespace from non-delivered ad
			var container = \$( container );
//console.log('reclaim '+ container.attr('id') );
			if( !container.is('.ad_zone') ) return;
			var packing = container.parent('.ad_bin');
			packing.removeClass('shown');
			container.removeClass('ad_zone_shown');
			if( container.hasClass('ad_zone_contentad') ) {
				packing.prev('.sect_leads').removeClass('aded_big aded_small');
				}
			container.trigger('TAZadRemoved').trigger('TAZboxChange');
			};



		var fuzeAdFrame = function( frame ) {	// register frame for messages, fire if one is from our content
console.log('legacy fuzeAdFrame', frame  );
			};


    // Hintergrund per Message
    var eventMethod = window.addEventListener ? "addEventListener" : "attachEvent";
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    var get_id = function( name ) {
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      };

    var get_name = function( id ) {
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    unblock = function( id, rb_id ) {
      var name = get_name(id);
      var index = roadblocks[name].indexOf(rb_id);
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        roadblocks[name].splice(index, 1);
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      if ( !roadblocks[name].length ) {
        googletag.defineSlot( '/53015287,118803185/' + name, sizes[name], id ).addService( googletag.pubads() );
        googletag.display( id );
        }
      };

    filOtaz_de.ads.gpt.activateAdFrame = function( id ) {
			if( !id ) return;
			if( adZoneHandled[id] ) return; adZoneHandled[id] = true; // only one active zone per id

			var packing   = \$('#ad_bin_'+ id );
			id = 'ad_zone_'+ id;
			var container = packing.find('>#'+ id );

			var name = container.attr('name');
			if( !name || !sizes[name] ) return;

			// handle custom ad load events
			container.on('filOtaz_de.ads.gpt.noBanner',   function(){  return false;  });
			container.on('filOtaz_de.ads.gpt.preBanner',  function(){
				filOtaz_de.ads.fitIn( container );
				return false;
				});
			container.on('filOtaz_de.ads.gpt.postBanner', function(){  return false;  });


			// define content
			googletag.cmd.push( function() {
				var pa = googletag.pubads();
        if ( roadblocks[name] ) {
          pa.addEventListener('slotRenderEnded', function (e) {
            for (var i=0; i<roadblocks[name].length; i++) {
              if ( e.slot.getSlotElementId() == 'ad_zone_' + roadblocks[name][i] ) {

		    if ( e.isEmpty ) {
                  unblock(id, roadblocks[name][i]);
                  }
                else {
                  document.getElementById(id).style.display = 'none';
                  for (var key in roadblocks) {
                    if ( !roadblocks.hasOwnProperty(key) ) continue;
                    for ( var j=0; j<roadblocks[key].length; j++ )
                    if ( id == 'ad_zone_' + roadblocks[key][j] ) {
                      unblock(get_id(key), roadblocks[key][j]);
                      break;
                      }
                    }
                  }
                }
              }
			    }); // pa.addEventListener
			    //	    console.log('roadblocks' + id);
          googletag.display(id);
          }
        else {
          pa.display( '/53015287,118803185/'+ name, sizes[name], id );
			    // console.log( 'asked for', '/53015287,118803185/'+ name, sizes[name], id );
          }
				pa.addEventListener('slotRenderEnded', function(e) {
			    if( e.slot.getSlotElementId() != id )  return;	// not our slot
			    container.trigger( e.isEmpty ? 'filOtaz_de.ads.gpt.noBanner' : 'filOtaz_de.ads.gpt.preBanner' );
			    //console.log( name +( e.isEmpty ? ' isEmpty' : ” ) );
					});
        });
      }; //filOtaz_de.ads.gpt.activateAdFrame

		// activate wallpaper combo add frame
/*
		filOtaz_de.ads.gpt.wallpaper = function() {
			console.log('filOtaz_de.ads.gpt.wallpaper not yet supported');
			};
*/

		})();
	</script><link rel="apple-touch-icon" sizes="57x57" href="/apple-icon-57x57.png"></link><link rel="apple-touch-icon" sizes="60x60" href="/apple-icon-60x60.png"></link><link rel="apple-touch-icon" sizes="72x72" href="/apple-icon-72x72.png"></link><link rel="apple-touch-icon" sizes="76x76" href="/apple-icon-76x76.png"></link><link rel="apple-touch-icon" sizes="114x114" href="/apple-icon-114x114.png"></link><link rel="apple-touch-icon" sizes="120x120" href="/apple-icon-120x120.png"></link><link rel="apple-touch-icon" sizes="144x144" href="/apple-icon-144x144.png"></link><link rel="apple-touch-icon" sizes="152x152" href="/apple-icon-152x152.png"></link><link rel="apple-touch-icon" sizes="180x180" href="/apple-icon-180x180.png"></link><link rel="icon" type="image/png" sizes="192x192" href="/android-icon-192x192.png"></link><link rel="icon" type="image/png" sizes="32x32" href="/favicon-32x32.png"></link><link rel="icon" type="image/png" sizes="96x96" href="/favicon-96x96.png"></link><link rel="icon" type="image/png" sizes="16x16" href="/favicon-16x16.png"></link><link rel="manifest" href="/manifest.json"></link><meta name="msapplication-TileColor" content="#ffffff"></meta><meta name="msapplication-TileImage" content="/ms-icon-144x144.png"></meta><link rel="mask-icon" href="/safari-pinned-tab.svg" color="#d50d2e"></link><meta name="theme-color" content="#ffffff"></meta></head><body class="homepage isdir "><noscript><img src="https://taz.de/stats/piwik.php?idsite=1\&amp;amp;rec=1\&amp;amp;action_name=NOSCRIPT" style="border:0" alt=""></img></noscript><ul style="display: none" itemscope="" itemtype="http://schema.org/Webpage"><li itemprop="publisher" itemscope="" itemtype="http://schema.org/Organization " style=" display:none; "><span itemprop="url" content="http://www.taz.de"></span><span itemprop="name" content="TAZ Verlags- und Vertriebs GmbH"></span><span itemprop="logo" itemscope="" itemtype="http://schema.org/ImageObject"><img itemprop="url" alt="taz logo" src="/lib/ch/web/pix/taz_logo_web.jpg"></img></span><span content="https://www.facebook.com/taz.kommune/" itemprop="sameAs"></span><span content="https://twitter.com/tazgezwitscher" itemprop="sameAs"></span><span content="https://www.instagram.com/taz.die_tageszeitung" itemprop="sameAs"></span><span content="https://flipboard.com/@taz_de" itemprop="sameAs"></span><span content="https://www.reddit.com/user/dietageszeitung" itemprop="sameAs"></span><span content="https://pod.geraspora.de/u/taz" itemprop="sameAs"></span></li></ul><script type="text/javascript">(function(){
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			</script><div class="topo_wit" id="counter"><!-- ================ begin: ivw (szm 2.0) ================ --><script xmlns="" type="text/javascript">
        IOMm('configure', {
            st: "taz",
	    dn: 'data-2d3a3249cd.taz.de',
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        </script><script xmlns="" type="text/javascript">
        IOMm('pageview', { cp: "Startseite" });
        </script><script xmlns="" type="text/javascript">
  	   IOMm('3p', 'qds', 'in');
	</script><!-- ================ end: ivw (szm 2.0) ================ --></div><div id="adOverlay" class="topo_lay"></div><div id="fake" class="topo_wit"></div><div id="background" class="topo_bin"><div id="skirt"></div><div id="centered"><script type="text/javascript">	// to be called inline early in #centered
//console.log( \$('#background') );
//console.log( \$('#centered') );
//console.log( \$('#pages') );
		var checkHash = function() {
			var hashURL = window.location.hash.slice(1);
			if( hashURL.indexOf('!tom=')         ==0 ) new filOtaz_de.TomOL( hashURL.substr(5) );
			if( hashURL.indexOf('!g')            ==0 ) new filOtaz_de.Gallery('/'+ hashURL );
			if( hashURL.indexOf('!vimeo=')       ==0 ) new filOtaz_de.VimeoVideo('/'+ hashURL );
			if( hashURL.indexOf('!track=')        ==0 ) {
				var tracking_key = hashURL.substr(7);
				console.log( "DEBUG TRACKURL tracking_key="+ tracking_key );
				window.location.hash = ”;

				if ( tracking_key =="TZISOCIALMEDIA" ) {
					_paq.push([ 'trackEvent', 'Verlag', 'Funnel', 'TZISOCIALMEDIA' ]);
					console.log("DEBUG-piwik TZISOCIALMEDIA");
				}
				if ( tracking_key =="TZIANZEIGE1" ) {
					_paq.push([ 'trackEvent', 'Verlag', 'Funnel', 'TZIANZEIGE1' ]);
					console.log("DEBUG-piwik TZIANZEIGE1");
				}
				if ( tracking_key =="TZIANZEIGE2" ) {
					_paq.push([ 'trackEvent', 'Verlag', 'Funnel', 'TZIANZEIGE2' ]);
					console.log("DEBUG-piwik TZIANZEIGE2");
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				if ( tracking_key =="TZIEPAPER" ) {
					_paq.push([ 'trackEvent', 'Verlag', 'Funnel', 'TZIEPAPER' ]);
					console.log("DEBUG-piwik TZIEPAPER");
				}
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			//if( hashURL.search(/\^![0-9]/) ==0 )	new filOtaz_de.Wtf('/'+ hashURL );
			};
		checkHash();
		\$(window).hashchange( checkHash );
	</script><span id="ad_bin_fireplace_bg" class="ad_bin"><div id="ad_zone_fireplace_bg" name="fireplace_bg" class="ad_zone"></div></span><span id="ad_bin_fireplace_mitte" class="ad_bin"><div id="ad_zone_fireplace_mitte" name="fireplace-mitte" class="ad_zone"></div></span><span id="ad_bin_fireplace_links" class="ad_bin"><div id="ad_zone_fireplace_links" name="fireplace-links" class="ad_zone"></div></span><span id="ad_bin_fireplace_rechts" class="ad_bin"><div id="ad_zone_fireplace_rechts" name="fireplace-rechts" class="ad_zone"></div></span><span id="ad_bin_fireplace_script" class="ad_bin"><div id="ad_zone_fireplace_script" name="fireplace-script" class="ad_zone"></div></span><script type="text/javascript">
(function(){
  var parent = \$('#ad_bin_fireplace_rechts').parent();
  if( !parent.is('.wing') || parent.is('.floating.wing') )  // for wings only run when already floating
    filOtaz_de.ads.gpt.activateAdFrame('fireplace_rechts');
  })();
(function(){
  var parent = \$('#ad_bin_fireplace_bg').parent();
  if( !parent.is('.wing') || parent.is('.floating.wing') )  // for wings only run when already floating
    filOtaz_de.ads.gpt.activateAdFrame('fireplace_bg');
  })();
(function(){
  var parent = \$('#ad_bin_fireplace_mitte').parent();
  if( !parent.is('.wing') || parent.is('.floating.wing') )  // for wings only run when already floating
    filOtaz_de.ads.gpt.activateAdFrame('fireplace_mitte');
  })();
(function(){
  var parent = \$('#ad_bin_fireplace_links').parent();
  if( !parent.is('.wing') || parent.is('.floating.wing') )  // for wings only run when already floating
    filOtaz_de.ads.gpt.activateAdFrame('fireplace_links');
  })();
              </script><div id="adzone_wall" class=""><span id="ad_bin_ros_top_rechts" class="ad_bin"><div id="ad_zone_ros_top_rechts" name="ros_top-rechts" class="ad_zone"></div></span><script type="text/javascript"> (function(){
		var domId = 'ros_top_rechts';
		var parent = \$( '#ad_bin_'+ domId ).parent();
		if ( parent.is('.wing') ) {
			filOtaz_de_float.promise.promise().done(function(){
				filOtaz_de.ads.gpt.activateAdFrame( domId );
			});
		} else {
			filOtaz_de.ads.gpt.activateAdFrame( domId );
		}
	})();
	</script><span id="ad_bin_ros_top_mitte" class="ad_bin"><div id="ad_zone_ros_top_mitte" name="ros_top-mitte" class="ad_zone"></div></span><script type="text/javascript"> (function(){
		var domId = 'ros_top_mitte';
		var parent = \$( '#ad_bin_'+ domId ).parent();
		if ( parent.is('.wing') ) {
			filOtaz_de_float.promise.promise().done(function(){
				filOtaz_de.ads.gpt.activateAdFrame( domId );
			});
		} else {
			filOtaz_de.ads.gpt.activateAdFrame( domId );
		}
	})();
	</script></div><div id="pages" class="news home"><ul role="navigation" id="globalnavigation" class="navbar"><li class="first odd trodd"><a href="https://taz.de/!p4905/" id="menu_p5357"><span>Coming soon: Das taz lab 2022</span></a></li><li class="even trodd"><a href="/Abo/!p4209/" id="menu_p4209"><span>Abo</span></a></li><li class="odd treven"><a href="/Genossenschaft/!p4271/" id="menu_p4271"><span>Genossenschaft</span></a></li><li class="even trodd"><a href="https://taz.de/!p4697/#matomo:pk_campaign" id="menu_p5149"><span>taz zahl ich</span></a></li><li class="odd trodd"><a href="/Info/!p4206/" id="menu_p4206"><span>Info</span></a></li><li class="even treven"><a href="/!p4233/" id="menu_p5311"><span>Veranstaltungen</span></a></li><li class="odd trodd"><a href="https://shop.taz.de/#pk_campaign" target="_blank" id="menu_p4378"><span>Shop</span></a></li><li class="even trodd"><a href="/Anzeigen/!p4288/" id="menu_p4288"><span>Anzeigen</span></a></li><li class="odd treven"><a href="https://taz.de/Panter-Preis/!p4207/" id="menu_p5133"><span>Jetzt f"ur den Panter Preis 2022 bewerben</span></a></li><li class="even trodd"><a href="/!p5099/" id="menu_p5106"><span>taz FUTURZWEI</span></a></li><li class="odd trodd"><a href="/!p5298/" id="menu_p5319"><span>taz Talk</span></a></li><li class="even treven"><a href="https://taz.de/Info/Stellen/!p4236/" id="menu_p5373"><span>Arbeiten in der taz</span></a></li><li class="odd trodd"><a href="https://taz.de/!p5122/" id="menu_p5344"><span>taz wird neu</span></a></li><li class="even trodd"><a href="/!p5297/" id="menu_p4955"><span>taz in der Kritik</span></a></li><li class="odd treven"><a href="/!p4662/" id="menu_p5148"><span>taz am Wochenende</span></a></li><li class="even trodd"><a href="//blogs.taz.de/" id="menu_p4366"><span>Blogs \&amp;amp; Hausblog</span></a></li><li class="odd trodd"><a href="//monde-diplomatique.de/" id="menu_p4387"><span>LE MONDE diplomatique</span></a></li><li class="even treven"><a href="/Thema/!p4786/" id="menu_p4786"><span>Thema</span></a></li><li class="odd trodd"><a href="/Panter-Stiftung/!p4258/" id="menu_p4258"><span>Panter Stiftung</span></a></li><li class="even trodd"><a href="/Panter-Preis/!p4207/" id="menu_p4207"><span>Panter Preis</span></a></li><li class="odd treven"><a href="/Recherchefonds-Ausland/!p5062/" id="menu_p5062"><span>Recherchefonds Ausland</span></a></li><li class="even trodd"><a href="/Reisen-in-die-Zivilgesellschaft/!p4310/" id="menu_p4310"><span>Reisen in die Zivilgesellschaft</span></a></li><li class="odd trodd"><a href="/!p5044/" id="menu_p5123"><span>Christian Specht</span></a></li><li class="even treven"><a href="https://taz.de/!114771/?x" id="menu_p4357"><span>e-Kiosk</span></a></li><li class="odd trodd"><a href="/Salon/!p5021/" id="menu_p5021"><span>Salon</span></a></li><li class="even trodd"><a href="/Kantine/!p4237/" id="menu_p4237"><span>Kantine</span></a></li><li class="odd treven"><a href="/Archiv/!p4311/" id="menu_p4311"><span>Archiv</span></a></li><li class="last even trodd"><a href="/Hilfe/!p4591/" id="menu_p4591"><span>Hilfe</span></a></li></ul><span id="ad_bin_ros_billboard_1" class="ad_bin sold contentad"><div id="ad_zone_ros_billboard_1" name="ros_billboard-1" class="ad_zone ad_zone_contentad ad_zone_badged ad_zone_sold"></div></span><script type="text/javascript"> (function(){
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		var parent = \$( '#ad_bin_'+ domId ).parent();
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				filOtaz_de.ads.gpt.activateAdFrame( domId );
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	</script><div class="full prefixed news page first odd first_page n1"><div class="head" role="head"><ul role="navigation" class="news navbar newsnavigation"><li class="first odd trodd home selected"><a href="/" id="menu_p4608"><span>taz</span><div class="tazze logo"></div></a></li><li class="even trodd"><a href="/Themen/!p5360/" id="menu_p5360"><span>Themen</span></a></li><li class="odd treven"><a href="/Politik/!p4615/" id="menu_p4615"><span>Politik</span></a></li><li class="even trodd"><a href="/Oeko/!p4610/" id="menu_p4610"><span>"Oko</span></a></li><li class="odd trodd"><a href="/Gesellschaft/!p4611/" id="menu_p4611"><span>Gesellschaft</span></a></li><li class="even treven"><a href="/Kultur/!p4639/" id="menu_p4639"><span>Kultur</span></a></li><li class="odd trodd"><a href="/Sport/!p4646/" id="menu_p4646"><span>Sport</span></a></li><li class="even trodd"><a href="/Berlin/!p4649/" id="menu_p4649"><span>Berlin</span></a></li><li class="odd treven"><a href="/Nord/!p4650/" id="menu_p4650"><span>Nord</span></a></li><li class="last even trodd"><a href="/Wahrheit/!p4644/" id="menu_p4644"><span>Wahrheit</span></a></li></ul><script>
		var liSelected = \$(document.getLatestElement()).find('li.selected');
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Doch M"annlich sein bedeutet, Verantwortung zu "ubernehmen. </p></div><img src="/picture/5499193/624/29695131-1.jpeg" alt="Ein Soldat und eine Frau umarmen sich auf einem Bahnsteig" title="Ein Soldat und eine Frau umarmen sich auf einem Bahnsteig"></img></a></li><li class="sectbody even trodd online   report article leaded pictured"><a href="/Bundespraesident-Steinmeier-in-Finnland/!5848345/" ratioURL-ressource="5848345" class="objlink report article leaded pictured noavatar" role="link"><h4>Bundespr"asident Steinmeier in Finnland</h4><h3>„Wir stehen an Eurer Seite“</h3><p>Frank-Walter Steimeier ist auf Staatsbesuch in Helsinki. Der Ukrainekrieg und die Kritik an seiner Russland-Politik in der Vergangenheit reisen mit. <span class="author">Sabine am Orde</span></p><img src="/picture/5500410/192/29922082-1.jpeg" alt="Seinmeier und Ninistro hinter Fahnen" title="Seinmeier und Ninistro hinter Fahnen"></img></a></li><li class="sectbody odd treven online   report article leaded pictured"><a href="/Weizenkrise-und-Ukraine-Krieg/!5844762/" ratioURL-ressource="5844762" class="objlink report article leaded pictured noavatar" role="link"><h4>Weizenkrise und Ukraine-Krieg</h4><h3>Hunger als Waffe</h3><p>Mit seinem Angriffskrieg hat Putin nicht nur die Ern"ahrungslage in der Ukraine verschlechtert, sondern auf der ganzen Welt. <span class="author">Christian Jakob, Verena H"olzl</span></p><img src="/picture/5499247/192/Weizenaehren-1.jpeg" alt="Weizen"ahren vor blauem Himmel" title="Weizen"ahren vor blauem Himmel"></img></a></li><li class="sectbody last even trodd online   interview article leaded pictured"><a href="/Leiterin-der-Heinrich-Boell-Stiftung/!5844803/" ratioURL-ressource="5844803" class="objlink interview article leaded pictured noavatar" role="link"><h4>Leiterin der Heinrich-B"oll-Stiftung</h4><h3>„Mut f"ordern, Optionen erkennen“</h3><p>Barbara Unm"u"sig hat 20 Jahre lang die Heinrich-B"oll-Stiftung geleitet. Jetzt geht sie in Rente. Ein Gespr"ach "uber den Mut, sich einzumischen. </p><img src="/picture/5487548/192/Barabra-Unmuessig-1.jpeg" alt="Barbara Unm"u"sig im Portr"at, links von ihr befindet sich im Anschnitt ein abstraktes Gem"alde" title="Barbara Unm"u"sig im Portr"at, links von ihr befindet sich im Anschnitt ein abstraktes Gem"alde"></img></a></li></ul></div><div role="region" id="xid490804" class="even sect sect_leads style_leads oddpicts "><ul role="directory" debug="x1" class="news directory"><li class="sectbody first odd trodd first_sectbody online   subjective column article leaded pictured"><a href="/Vegetarische-Wurst-und-blutige-Steaks/!5844755/" ratioURL-ressource="5844755" class="objlink subjective column article leaded pictured avatar" role="link"><h4>Vegetarische Wurst und blutige Steaks</h4><h3>Scholz und die Fehlbarkeit der SPD</h3><span class="category_and_name avatar"><img itemprop="image" class="avatar_image lozad" data-src="/kommune/files/images/profile/70x70/1040.png"></img><noscript><img itemprop="image" class="avatar_image" src="/kommune/files/images/profile/70x70/1040.png"></img></noscript><div><span>Kolumne<b> Der rote Faden </b></span><span class="author"><p>von <b>Silke Mertins</b> </p></span></div><p>Der Kanzler hat schwere Tage hinter sich. Kritik wegen der z"ogerlichen Waffenlieferungen, die Impfpflicht und dann auch noch das Foto mit Klitschko. </p></span><img src="/picture/5500162/192/29918371-1.jpeg" alt="Olaf Scholz" title="Olaf Scholz"></img></a></li><li class="sectbody even trodd online   report article leaded pictured"><a href="/Fake-News-und-Antisemitismus/!5844733/" ratioURL-ressource="5844733" class="objlink report article leaded pictured noavatar" role="link"><h4>Fake News und Antisemitismus</h4><h3>Die Geschichte des Simon von Trient</h3><p>Wie christliche Fanatiker Mythen "uber von Juden begangene Kinds- und Ritualmorde erfanden. 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Russische Truppen konzentrieren sich in der Ostukraine. Moskau droht YouTube nach Sperrung von Duma-TV. <span class="author">Canset Icpinar</span></p><img class="lozad" src="/picture/5500386/14/29929289-3.jpeg" data-src="/picture/5500386/300/29929289-3.jpeg" alt="YouTube Logo auf russischer Flagge durch zerbrochenes Glas" title="YouTube Logo auf russischer Flagge durch zerbrochenes Glas"></img><noscript><img src="/picture/5500386/300/29929289-3.jpeg" alt="YouTube Logo auf russischer Flagge durch zerbrochenes Glas" title="YouTube Logo auf russischer Flagge durch zerbrochenes Glas"></img></noscript></a></li><li class=" last even trodd online   report article leaded pictured"><a href="/Der-Bundeskanzler-in-London/!5848340/" ratioURL-ressource="5848340" class="objlink report article leaded pictured noavatar" role="link"><h4>Der Bundeskanzler in London</h4><h3>Undiplomatisches Grinsen</h3><p>Olaf Scholz und Boris Johnson sind sich in der Ukraine-Politik in vielem einig. 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Das Endlager in Bure ist umstritten. <span class="author">Rudolf Balmer</span></p><img class="lozad" src="/picture/5488467/14/29895429-1.jpeg" data-src="/picture/5488467/624/29895429-1.jpeg" alt="Ein Mann in Sicherheitskkleidung geht in einem Tunnel mit vielen R"ohren" title="Ein Mann in Sicherheitskkleidung geht in einem Tunnel mit vielen R"ohren"></img><noscript><img src="/picture/5488467/624/29895429-1.jpeg" alt="Ein Mann in Sicherheitskkleidung geht in einem Tunnel mit vielen R"ohren" title="Ein Mann in Sicherheitskkleidung geht in einem Tunnel mit vielen R"ohren"></img></noscript></a></li><li class="sectbody even trodd online   report article leaded pictured"><div class="meta"><ul role="navigation" class="left toolbar"><li class="date">7.4.2022</li></ul><ul role="navigation" class="right rootline toolbar"></ul></div><div class="metadata" itemscope=""><meta itemprop="cms-article-ID" content="5843673"></meta><meta itemprop="cms-obj-ID" content="5498479"></meta></div><a href="/Frankreich-vor-der-Praesidentenwahl/!5843673/" ratioURL-ressource="5843673" class="objlink report article leaded pictured noavatar" role="link"><h4>Frankreich vor der Pr"asidentenwahl</h4><h3>Aufholjagd à la Le Pen</h3><p>Die rechtsextreme Kandidatin ist Amtsinhaber Macron dicht auf den Fersen. 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Pr"asident Macron sieht sich als Sieger. <span class="author">Dorothea Hahn</span></p><img class="lozad" src="/picture/5496295/14/24858908-1.jpeg" data-src="/picture/5496295/300/24858908-1.jpeg" alt="Paris" title="Paris"></img><noscript><img src="/picture/5496295/300/24858908-1.jpeg" alt="Paris" title="Paris"></img></noscript></a></li><li class="sectbody last even trodd online   subjective commentary article leaded pictured"><div class="meta"><ul role="navigation" class="left toolbar"><li class="date">7.4.2022</li></ul><ul role="navigation" class="right rootline toolbar"></ul></div><div class="metadata" itemscope=""><meta itemprop="cms-article-ID" content="5843485"></meta><meta itemprop="cms-obj-ID" content="5496004"></meta></div><a href="/Vor-den-Wahlen-in-Frankreich/!5843485/" ratioURL-ressource="5843485" class="objlink subjective commentary article leaded pictured noavatar" role="link"><h4>Vor den Wahlen in Frankreich</h4><h3>Der Netflix-Pr"asident</h3><span class="category_and_name"><div><span>Kommentar </span><span class="author"><p>von <b>Harriet Wolff</b> </p></span></div></span><p>Am Sonntag w"ahlt Frankreich. Vor dem ersten Wahlgang inszeniert sich Favorit und Amtsinhaber Macron als smarter Bewahrer der Grande Nation. </p><img class="lozad" src="/picture/5496004/14/29899955-1.jpeg" data-src="/picture/5496004/300/29899955-1.jpeg" alt="Emmanuel Macron spricht w"ahrend einer Wahlkampftour" title="Emmanuel Macron spricht w"ahrend einer Wahlkampftour"></img><noscript><img src="/picture/5496004/300/29899955-1.jpeg" alt="Emmanuel Macron spricht w"ahrend einer Wahlkampftour" title="Emmanuel Macron spricht w"ahrend einer Wahlkampftour"></img></noscript></a></li></ul></div><!-- DEBUG belly: 0 extras here, 0 from directory Pr"asidentschaftswahl in Frankreich 2022, thats 0 merged--></span><span class="wing" role="complementary"><div class="rack first_rack" id="xid508431">

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		DEBUG: 1--><div class="insert dep4536"><div role="region" id="xid852460" class="first last odd sect sect_single style_single "><ul role="directory" class="sectbody corp  directory"><li class=" first last odd trodd online  brief  story pictured"><a class="dept" href="/FUTURZWEI/!p5099/">FUTURZWEI</a><a href="/Vier-Projekte/!5848091/" ratioURL-ressource="5848091" class="objlink brief story pictured noavatar" role="link"><h4>Vier Projekte</h4><h3>Die neue Landlust</h3><img class="lozad" src="/picture/5496635/14/Fuchsmuehle-Landlust-taz-FUTURZWEI.jpg" data-src="/picture/5496635/624/Fuchsmuehle-Landlust-taz-FUTURZWEI.jpg" alt="" title=""></img><noscript><img src="/picture/5496635/624/Fuchsmuehle-Landlust-taz-FUTURZWEI.jpg" alt="" title=""></img></noscript></a></li></ul></div></div><div class="mini news page odd n3"><div class="nose" role="heading" id="pg881352_hd"><h2><a name="Reportage und Recherche" href="/Gesellschaft/Reportage-und-Recherche/!p5265//"><span>Reportage und Recherche</span></a></h2></div><span class="body" role="main"><div role="region" id="xid824018" class="first last odd sect sect_leads style_leads  first_sect_leads oddpicts "><ul role="directory" debug="x1" class="news directory"><li class="sectbody first odd trodd first_sectbody online   longread article leaded pictured"><a href="/Ukrainische-Schueler-in-Deutschland/!5844783/" ratioURL-ressource="5844783" class="objlink longread article leaded pictured noavatar" role="link"><h4>Ukrainische Sch"u­le­r in Deutschland</h4><h3>Ihr Blick geht nach vorne</h3><p>Denys und Illia sind Cousins. Sie sind aus der Ukraine gefl"uchtet. Der eine besucht eine Willkommensklasse, der andere nimmt am Fernunterricht teil. <span class="author">Ralf Pauli</span></p><img class="lozad" src="/picture/5499473/14/29894718-1.jpeg" data-src="/picture/5499473/948/29894718-1.jpeg" alt="Ein Sch"uler sitzt zuhausevor seinem Laptop" title="Ein Sch"uler sitzt zuhausevor seinem Laptop"></img><noscript><img src="/picture/5499473/948/29894718-1.jpeg" alt="Ein Sch"uler sitzt zuhausevor seinem Laptop" title="Ein Sch"uler sitzt zuhausevor seinem Laptop"></img></noscript></a></li><li class="sectbody even trodd online   longread article leaded pictured"><a href="/Tattoos-im-Ukrainekrieg/!5843668/" ratioURL-ressource="5843668" class="objlink longread article leaded pictured noavatar" role="link"><h4>Tattoos im Ukrainekrieg</h4><h3>Hoffnungslos und f"ur immer</h3><p>In der Ukraine lassen sich seit Kriegsbeginn immer mehr Menschen T"atowierungen zu Ehren der Soldaten stechen. Es gibt ihnen Kraft und macht sie stolz. <span class="author">Verena H"olzl</span></p><img class="lozad" src="/picture/5498089/14/29913006-1.jpeg" data-src="/picture/5498089/948/29913006-1.jpeg" alt="Eine Frau zeigt ihre Tatoo mit kyrillischer Schrift auf den Rippenb"ogen" title="Eine Frau zeigt ihre Tatoo mit kyrillischer Schrift auf den Rippenb"ogen"></img><noscript><img src="/picture/5498089/948/29913006-1.jpeg" alt="Eine Frau zeigt ihre Tatoo mit kyrillischer Schrift auf den Rippenb"ogen" title="Eine Frau zeigt ihre Tatoo mit kyrillischer Schrift auf den Rippenb"ogen"></img></noscript></a></li><li class="sectbody odd treven online   longread article leaded pictured"><a href="/Erneuerbare-Energie-und-ihre-Tuecken/!5843260/" ratioURL-ressource="5843260" class="objlink longread article leaded pictured noavatar" role="link"><h4>Erneuerbare Energie und ihre T"ucken</h4><h3>Wind, Wald, Auerhuhn</h3><p>Windenergie statt Putins "Ol – klingt gut. Doch wie wirken sich die riesigen Rotoren eigentlich auf das sensible "Okosystem Wald aus? <span class="author">Ulrike Fokken</span></p><img class="lozad" src="/picture/5488342/14/19259326-1.jpeg" data-src="/picture/5488342/948/19259326-1.jpeg" alt="Windrad im Wald" title="Windrad im Wald"></img><noscript><img src="/picture/5488342/948/19259326-1.jpeg" alt="Windrad im Wald" title="Windrad im Wald"></img></noscript></a></li><li class="sectbody even trodd online   longread article leaded pictured"><a href="/Nach-dem-Massaker-in-Butscha/!5843396/" ratioURL-ressource="5843396" class="objlink longread article leaded pictured noavatar" role="link"><h4>Nach dem Massaker in Butscha</h4><h3>Die "Uberlebenden</h3><p>Irina und Evgeni haben ihre Nachbarn begraben. Bestatter Sergei hat zwanzig Leichen geborgen, deren H"ande auf dem R"ucken gefesselt waren. <span class="author">Anastasia Magasowa</span></p><img class="lozad" src="/picture/5493603/14/29887948-1.jpeg" data-src="/picture/5493603/948/29887948-1.jpeg" alt="Eine Stra"se mit ausgebrannten Milit"arfahrzeugen, ein Mensch geht durch die Tr"ummer" title="Eine Stra"se mit ausgebrannten Milit"arfahrzeugen, ein Mensch geht durch die Tr"ummer"></img><noscript><img src="/picture/5493603/948/29887948-1.jpeg" alt="Eine Stra"se mit ausgebrannten Milit"arfahrzeugen, ein Mensch geht durch die Tr"ummer" title="Eine Stra"se mit ausgebrannten Milit"arfahrzeugen, ein Mensch geht durch die Tr"ummer"></img></noscript></a></li><li class="sectbody odd trodd online   longread article leaded pictured"><a href="/Vor-30-Jahren-begann-der-Bosnienkrieg/!5842991/" ratioURL-ressource="5842991" class="objlink longread article leaded pictured noavatar" role="link"><h4>Vor 30 Jahren begann der Bosnienkrieg</h4><h3>Gleiche Logik, gleicher Schrecken</h3><p>Bei Menschen, die die Belagerung von Sarajevo erlebten, wecken die Bilder aus der Ukraine schlimme Erinnerungen. Auch sie lebten lange in Ungewissheit und Angst. <span class="author">Erich Rathfelder</span></p><img class="lozad" src="/picture/5483921/14/29871963-1.jpeg" data-src="/picture/5483921/948/29871963-1.jpeg" alt="Blick "uber Sarajewo" title="Blick "uber Sarajewo"></img><noscript><img src="/picture/5483921/948/29871963-1.jpeg" alt="Blick "uber Sarajewo" title="Blick "uber Sarajewo"></img></noscript></a></li><li class="sectbody even treven online   longread article leaded pictured"><a href="/Ukrainische-Gefluechtete-in-Brandenburg/!5843190/" ratioURL-ressource="5843190" class="objlink longread article leaded pictured noavatar" role="link"><h4>Ukrainische Gefl"uchtete in Brandenburg</h4><h3>Fremdes Heimland</h3><p>39 Seelen lebten bisher in einem brandenburgischen Dorf. Nun sind 160 Menschen aus der Ukraine dazugekommen. Ein Ortsbesuch. <span class="author">Sabina Zollner</span></p><img class="lozad" src="/picture/5486404/14/29835758-3.jpeg" data-src="/picture/5486404/948/29835758-3.jpeg" alt="Frauen an einem Tisch" title="Frauen an einem Tisch"></img><noscript><img src="/picture/5486404/948/29835758-3.jpeg" alt="Frauen an einem Tisch" title="Frauen an einem Tisch"></img></noscript></a></li><li class="sectbody odd trodd online   longread article leaded pictured"><a href="/Ukrainisch-russisches-Tanzpaar/!5842983/" ratioURL-ressource="5842983" class="objlink longread article leaded pictured noavatar" role="link"><h4>Ukrainisch-russisches Tanzpaar</h4><h3>Der Krieg tanzt mit</h3><p>Anna und Artur aus Bochum geh"oren zur Weltspitze in den lateinamerikanischen T"anzen. Was der Angriff Russlands auf die Ukraine f"ur sie bedeutet. <span class="author">Anna Fastabend</span></p><img class="lozad" src="/picture/5483116/14/29820908-1.jpeg" data-src="/picture/5483116/948/29820908-1.jpeg" alt="Anna Salita und Artur Balandin auf der Tanzfl"ache" title="Anna Salita und Artur Balandin auf der Tanzfl"ache"></img><noscript><img src="/picture/5483116/948/29820908-1.jpeg" alt="Anna Salita und Artur Balandin auf der Tanzfl"ache" title="Anna Salita und Artur Balandin auf der Tanzfl"ache"></img></noscript></a></li><li class="sectbody even trodd online   longread article leaded pictured"><a href="/Wilhelmshavens-Last-der-Vergangenheit/!5844372/" ratioURL-ressource="5844372" class="objlink longread article leaded pictured noavatar" role="link"><h4>Wilhelmshavens Last der Vergangenheit</h4><h3>Kolonialer Alptraum</h3><p>Die Marinestadt Wilhelmshaven ist ein Freilichtmuseum des deutschen Imperialismus. Ein Runder Tisch versucht nun die Dekolonialisierung. <span class="author">Benno Schirrmeister</span></p><img class="lozad" src="/picture/5481424/14/wilhelmshavenalt-1.jpeg" data-src="/picture/5481424/948/wilhelmshavenalt-1.jpeg" alt="Eine alte Postkarte zeigt ein Kriegsschiff vor Wilhelmshaven" title="Eine alte Postkarte zeigt ein Kriegsschiff vor Wilhelmshaven"></img><noscript><img src="/picture/5481424/948/wilhelmshavenalt-1.jpeg" alt="Eine alte Postkarte zeigt ein Kriegsschiff vor Wilhelmshaven" title="Eine alte Postkarte zeigt ein Kriegsschiff vor Wilhelmshaven"></img></noscript></a></li><li class="sectbody odd treven online   longread article leaded pictured"><a href="/Linkspartei-in-der-Existenzkrise/!5845373/" ratioURL-ressource="5845373" class="objlink longread article leaded pictured noavatar" role="link"><h4>Linkspartei in der Existenzkrise</h4><h3>Die Linke und Putins Krieg</h3><p>Vielen in der Linkspartei galt Russland lange als Friedensmacht – trotz aller Widerspr"uche. Nun droht sie an der Frage zu zerbrechen. <span class="author">Pascal Beucker, Stefan Reinecke, Anna Lehmann</span></p><img class="lozad" src="/picture/5480654/14/296083702-3.jpeg" data-src="/picture/5480654/948/296083702-3.jpeg" alt="Eine Frau tr"agt eine laue Fahne und Friedenstaube mit Logo der Linken" title="Eine Frau tr"agt eine laue Fahne und Friedenstaube mit Logo der Linken"></img><noscript><img src="/picture/5480654/948/296083702-3.jpeg" alt="Eine Frau tr"agt eine laue Fahne und Friedenstaube mit Logo der Linken" title="Eine Frau tr"agt eine laue Fahne und Friedenstaube mit Logo der Linken"></img></noscript></a></li><li class="sectbody even trodd online   longread article leaded pictured"><a href="/Litauen-fuerchtet-russischen-Angriff/!5841692/" ratioURL-ressource="5841692" class="objlink longread article leaded pictured noavatar" role="link"><h4>Litauen f"urchtet russischen Angriff</h4><h3>Auf dem Pulverfass</h3><p>Viele Litauer f"urchten, dass Russland auch ihr Land bald angreifen k"onnte – "uber die Schlie"sung der „Suwalki-L"ucke“ zwischen Kaliningrad und Belarus. <span class="author">Gabriele Lesser</span></p><img class="lozad" src="/picture/5476365/14/29850398-1.jpeg" data-src="/picture/5476365/948/29850398-1.jpeg" alt="Ein rot-gr"uner Grenzpfosten bei Kaliningrad im Dreil"andereck:" title="Ein rot-gr"uner Grenzpfosten bei Kaliningrad im Dreil"andereck:"></img><noscript><img src="/picture/5476365/948/29850398-1.jpeg" alt="Ein rot-gr"uner Grenzpfosten bei Kaliningrad im Dreil"andereck:" title="Ein rot-gr"uner Grenzpfosten bei Kaliningrad im Dreil"andereck:"></img></noscript></a></li><li class="sectbody odd trodd online   longread article leaded pictured"><a href="/Die-AfD-und-der-Krieg-in-der-Ukraine/!5844230/" ratioURL-ressource="5844230" class="objlink longread article leaded pictured noavatar" role="link"><h4>Die AfD und der Krieg in der Ukraine</h4><h3>Wie h"altst du’s mit Russland?</h3><p>Viele AfD-Politiker haben sich dem Autokraten Putin gern angedient. Seit dem "Uberfall auf die Ukraine streiten sie um den richtigen Kurs. <span class="author">Gareth Joswig</span></p><img class="lozad" src="/picture/5474225/14/29844946-1.jpeg" data-src="/picture/5474225/948/29844946-1.jpeg" alt="M"anner im Anzug und mit Coronamaske" title="M"anner im Anzug und mit Coronamaske"></img><noscript><img src="/picture/5474225/948/29844946-1.jpeg" alt="M"anner im Anzug und mit Coronamaske" title="M"anner im Anzug und mit Coronamaske"></img></noscript></a></li><li class="sectbody even treven online   longread article leaded pictured"><a href="/Krieg-in-der-Ukraine/!5841496/" ratioURL-ressource="5841496" class="objlink longread article leaded pictured noavatar" role="link"><h4>Krieg in der Ukraine</h4><h3>Russlands Schattenarmee</h3><p>Die Wagner-S"oldnerarmee war bisher vor allem Moskaus verl"angerter Arm in Afrika. Jetzt wird sie im Kampf gegen Kiew gebraucht. <span class="author">Mirco Keilberth, Simone Schlindwein</span></p><img class="lozad" src="/picture/5468430/14/29811867-1.jpeg" data-src="/picture/5468430/948/29811867-1.jpeg" alt='Das Logo zeigt einen Totensch"adel in einem Fadenkreuz. Auf Russisch und Englisch steht der Name "Wagner" "uber und unter dem Sch"adel' title='Das Logo zeigt einen Totensch"adel in einem Fadenkreuz. Auf Russisch und Englisch steht der Name "Wagner" "uber und unter dem Sch"adel'></img><noscript><img src="/picture/5468430/948/29811867-1.jpeg" alt='Das Logo zeigt einen Totensch"adel in einem Fadenkreuz. Auf Russisch und Englisch steht der Name "Wagner" "uber und unter dem Sch"adel' title='Das Logo zeigt einen Totensch"adel in einem Fadenkreuz. Auf Russisch und Englisch steht der Name "Wagner" "uber und unter dem Sch"adel'></img></noscript></a></li><li class="sectbody odd trodd online   longread article leaded pictured"><a href="/Coronamythen-und-Beziehung/!5841144/" ratioURL-ressource="5841144" class="objlink longread article leaded pictured noavatar" role="link"><h4>Coronamythen und Beziehung</h4><h3>Liebe in Zeiten der Desinformation</h3><p>Ein Mann hat in der Pandemie seine Frau an die Verschw"orungsszene verloren. Was macht das mit der Liebe? <span class="author">Nora Belghaus</span></p><img class="lozad" src="/picture/5468200/14/29810789-1.jpeg" data-src="/picture/5468200/948/29810789-1.jpeg" alt="Die D"amonen der Desinformation haben die Familie im Griff" title="Die D"amonen der Desinformation haben die Familie im Griff"></img><noscript><img src="/picture/5468200/948/29810789-1.jpeg" alt="Die D"amonen der Desinformation haben die Familie im Griff" title="Die D"amonen der Desinformation haben die Familie im Griff"></img></noscript></a></li><li class="sectbody even trodd online   longread article leaded pictured"><a href="/Siebter-Jahrestag-des-Jemenkriegs/!5844219/" ratioURL-ressource="5844219" class="objlink longread article leaded pictured noavatar" role="link"><h4>Siebter Jahrestag des Jemenkriegs</h4><h3>„Wir sind auch Menschen“</h3><p>Im Jemen herrscht seit sieben Jahren Krieg. In dem Konflikt gibt es viele Parteien, noch viel mehr Opfer und wenig internationale Aufmerksamkeit. <span class="author">Lisa Schneider</span></p><img class="lozad" src="/picture/5471443/14/29823398-1.jpeg" data-src="/picture/5471443/948/29823398-1.jpeg" alt="Ein junge in wei"sen Gewand steht vor einem zerst"orten sandfarbenen Geb"aude." title="Ein junge in wei"sen Gewand steht vor einem zerst"orten sandfarbenen Geb"aude."></img><noscript><img src="/picture/5471443/948/29823398-1.jpeg" alt="Ein junge in wei"sen Gewand steht vor einem zerst"orten sandfarbenen Geb"aude." title="Ein junge in wei"sen Gewand steht vor einem zerst"orten sandfarbenen Geb"aude."></img></noscript></a></li><li class="sectbody odd treven online   longread article leaded pictured"><a href="/Probewohnen-in-schrumpfenden-Orten/!5841214/" ratioURL-ressource="5841214" class="objlink longread article leaded pictured noavatar" role="link"><h4>Probewohnen in schrumpfenden Orten</h4><h3>Land auf Zeit</h3><p>Die Gro"sstadt im Tausch mit dem Landleben: In einem Sommer der Pioniere wird das in der hessischen Kleinstadt Homberg ausprobiert. <span class="author">Juliane Prei"s, Uwe Rada</span></p><img class="lozad" src="/picture/5468741/14/Homberg-1.jpeg" data-src="/picture/5468741/948/Homberg-1.jpeg" alt="Blick auf Fachwerkh"auser in Homberg (Efze)" title="Blick auf Fachwerkh"auser in Homberg (Efze)"></img><noscript><img src="/picture/5468741/948/Homberg-1.jpeg" alt="Blick auf Fachwerkh"auser in Homberg (Efze)" title="Blick auf Fachwerkh"auser in Homberg (Efze)"></img></noscript></a></li><li class="sectbody even trodd online   longread article leaded pictured"><a href="/Rassismus-als-Propagandawerkzeug/!5841135/" ratioURL-ressource="5841135" class="objlink longread article leaded pictured noavatar" role="link"><h4>Rassismus als Propagandawerkzeug</h4><h3>Da l"auft was falsch</h3><p>Seit Kriegsbeginn wird von Angriffen auf russischsprachige Menschen in Deutschland berichtet. Aber darunter mischen sich Falschmeldungen. <span class="author">Anne Fromm, Luise Strothmann, Sonja Smolenski</span></p><img class="lozad" src="/picture/5469480/14/29846452-1.jpeg" data-src="/picture/5469480/948/29846452-1.jpeg" alt="Screenshots auf dem heimlich gedrehten Video aus dem Jugendzentrum" title="Screenshots auf dem heimlich gedrehten Video aus dem Jugendzentrum"></img><noscript><img src="/picture/5469480/948/29846452-1.jpeg" alt="Screenshots auf dem heimlich gedrehten Video aus dem Jugendzentrum" title="Screenshots auf dem heimlich gedrehten Video aus dem Jugendzentrum"></img></noscript></a></li><li class="sectbody last odd trodd online   longread article leaded pictured"><a href="/Sanktionen-erreichen-Alltag-in-Moskau/!5840304/" ratioURL-ressource="5840304" class="objlink longread article leaded pictured noavatar" role="link"><h4>Sanktionen erreichen Alltag in Moskau</h4><h3>Abschied vom Westen</h3><p>In Russlands Shoppingmalls gehen viele Lichter aus: Westliche Ketten ziehen sich zur"uck. Kunden stehen stundenlang f"ur Kleider und Kosmetik an. <span class="author">Inna Hartwich</span></p><img class="lozad" src="/picture/5466285/14/29804010-3.jpeg" data-src="/picture/5466285/948/29804010-3.jpeg" alt="Geschlossenes Gesch"aft" title="Geschlossenes Gesch"aft"></img><noscript><img src="/picture/5466285/948/29804010-3.jpeg" alt="Geschlossenes Gesch"aft" title="Geschlossenes Gesch"aft"></img></noscript></a></li></ul></div></span><script>

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	<div role="region" id="" class="first odd sect sect_text  no_body"><div class="secthead" role="heading"><h2><a name="Der taz-Kongress "uber die Chancen und Schwierigkeiten einer solidarischen Zukunft."><span>Der taz-Kongress "uber die Chancen und Schwierigkeiten einer solidarischen Zukunft.</span></a></h2></div><div class="sectbody"></div></div>



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	<div role="region" id="" class="first odd sect sect_text  no_body"><div class="secthead" role="heading"><h2><a name="Klimanews als Podcast – jede Woche neu"><span>Klimanews als Podcast – jede Woche neu</span></a></h2></div><div class="sectbody"></div></div>


<div role="region" id="" class="last even sect sect_videos style_videos "><ul role="directory" class="sectbody   directory"><li class=" first last odd trodd    video embed  pictured leaded" name="video_klima update° – die wichtigsten Klima-Nachrichten der Woche"><a class="objlink pictured leaded noavatar" role="link"><h3>klima update° – die wichtigsten Klima-Nachrichten der Woche</h3><p></p><img class="lozad" src="/uploads/images/14/klimareporter_feat_taz_web_16zu9.jpg" data-src="/uploads/images/300/klimareporter_feat_taz_web_16zu9.jpg" alt="" title=""></img><noscript><img src="/uploads/images/300/klimareporter_feat_taz_web_16zu9.jpg" alt="" title=""></img></noscript><style class="referenced" type="text/html"><div role="region" id="" class="first last odd sect sect_video style_video "><div class="secthead" role="heading"><h2><a name="klima update° – die wichtigsten Klima-Nachrichten der Woche"><span>klima update° – die wichtigsten Klima-Nachrichten der Woche</span></a></h2></div><div class="sectbody"><div class="webelement-content-container" webelementid="video-klimaupdatediewichtigstenlimaachrichtenderoche"><div class="webelement-content-container-content sectbody isoverlay"><h6>Wir w"urden Ihnen hier gerne einen externen Inhalt zeigen. Sie entscheiden, ob sie dieses Element auch sehen wollen.</h6><p>Ich bin damit einverstanden, dass mir externe Inhalte angezeigt werden. Damit k"onnen personenbezogene Daten an Drittplattformen "ubermittelt werden. <a href="https://taz.de/!166598" target="_blank">Mehr dazu in unserer Datenschutzerkl"arung.</a></p></div><div class="webelement-content-container-inner"><label class="checkbox-switch"><input type="checkbox"></input><span class="checkbox-switch-slider-round"></span><span class="webelement-checkbox-switch-text">Externen Inhalt erlauben<span id="consentPreview"></span></span></label><p class="webelemnt-checkbox-switch-disclaimer"></p></div><div class="webelement-js-content"><script type="text/javascript">steffiOtaz_de.WebelementSwitch().setWebelementSwitch('video-klimaupdatediewichtigstenlimaachrichtenderoche');</script></div></div><p class="caption">    Die wichtigsten Klima-Nachrichten der Woche – das taz-Klimahub berichtet jeden Freitag zusammen mit dem unabh"angigen Online-Magazin klimareporter° "uber Entwicklungen zur Klimakrise. | Mehr taz f"ur die Ohren gibts auf <a xmlns="" href="http://taz.de/podcast" target="_blank">taz.de/podcast</a>     </p></div></div></style><div class="webelement-html-content" webelementid="video-klimaupdatediewichtigstenlimaachrichtenderoche" data-initial-state="true"><noscript class="html-content webelement-html-content" type="text/plain"><script class="podigee-podcast-player" src="https://cdn.podigee.com/podcast-player/javascripts/podigee-podcast-player.js" data-configuration="https://klimaupdate.podigee.io/embed?context=external"></script></noscript></div></a></li></ul></div><script type="text/javascript">
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	<div role="region" id="" class="first last odd sect sect_text "><div class="secthead" role="heading"><h2><a name="Magazin f"ur Zukunft und Politik"><span>Magazin f"ur Zukunft und Politik</span></a></h2></div><div class="sectbody"><img src="/uploads/images/70/button_futurzwei.png" alt="" title=""></img><p>                  <b xmlns=""><a href="http://taz.de/!p5099/" target="_blank"> taz FUTURZWEI</a></b><i xmlns=""><b> </b></i>versteht Zukunft als Zentrum des Politischen und<i xmlns=""><b> </b></i>liefert  Analysen, Stichworte und Debatten zur Zeit. Die neue Ausgabe ist jetzt im gut sortierten Handel und im <a href="http://shop.taz.de/product_info.php?products_id=245163" target="_blank">taz Shop</a> erh"altlich.   </p></div></div>

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	<div role="region" id="" class="first last odd sect sect_text "><div class="secthead" role="heading"><h2><a name="So viel taz, wie sie m"ochten | unsere Abos"><span>So viel taz, wie sie m"ochten | unsere Abos</span></a></h2></div><div class="sectbody"><img src="/uploads/images/70/stift_500x500.png" alt="" title=""></img><p>            Wie h"atten Sie ihre taz denn gern? W"ahlen Sie aus unseren vielf"altigen Abo-Angeboten, f"ur jede Lesegewohnheit gibt es ein passendes Angebot:
</p><p>       <b xmlns=""><a href="https://www.taz.de/Print-am-Wochenende-plus-taegliches-ePaper/!117631//#matomo:pk_campaign=Standard_Kombi\&amp;amp;pk_source=Online\&amp;amp;pk_medium=taz.de\&amp;amp;pk_kwd=CLB_Startseite\&amp;amp;pk_content=Text" target="_blank">• Die unschlagbare Kombi</a></b>: Das Beste beider Welten – werktags erhalten Sie Ihre digitale taz aufs Smartphone und jeden Samstag die gedruckte <i xmlns="">taz am Wochenende</i>.
</p><p>            <b xmlns=""><a href="https://www.taz.de/!112034/#matomo:pk_campaign=Standard_Print-only\&amp;amp;pk_source=Online\&amp;amp;pk_medium=taz.de\&amp;amp;pk_kwd=CLB_Startseite\&amp;amp;pk_content=Text%E2%80%9C%20target=" target="_blank">• Der Klassiker</a></b>: Lesen Sie Ihre taz t"aglich sechs Tage die Woche gedruckt und inklusive <i xmlns="">taz am Wochenende</i>.
</p><p>            <b xmlns=""><a href="http://www.taz.de/tazam-wochenende/!112039/#matomo:pk_campaign=Standard_WE-only\&amp;amp;pk_source=Online\&amp;amp;pk_medium=taz.de\&amp;amp;pk_kwd=CLB_Startseite\&amp;amp;pk_content=Text" target="_blank">• F"ur die Couch</a></b>: Lesen Sie w"ochentlich die <i xmlns="">taz am Wochenende</i> gedruckt, jeden Samstag neu. Dick \&amp;amp; gem"utlich.
</p><p>            <b xmlns=""><a href="http://www.taz.de/Rundum-digital/!105243/#matomo:pk_campaign=Standard_Digi-only\&amp;amp;pk_source=Online\&amp;amp;pk_medium=taz.de\&amp;amp;pk_kwd=CLB_Startseite\&amp;amp;pk_content=Text" target="_blank">• F"ur unterwegs</a></b>: Sch"utzen Sie B"aume und haben Sie Ihre taz trotzdem immer dabei – die digitale taz in der App machts m"oglich.
</p><p>            <b xmlns=""><a href="http://taz.de/!115932/#matomo:pk_campaign=tzi-Startseite\&amp;amp;pk_source=Online\&amp;amp;pk_medium=taz.de\&amp;amp;pk_kwd=CLB_Startseite\&amp;amp;pk_content=Text" target="_blank">• F"ur ein solidarisches Netz</a></b>: Lesen Sie die taz online und helfen Sie uns dabei, dass taz.de f"ur alle kostenlos zug"anglich bleibt – mit <i xmlns="">taz zahl ich</i>.        </p></div></div>

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Das Reise-Ei von Aries liegt in einer passenden Wei"sblechdose, so kann man es "uberallhin mitnehmen, auch zum Ostereiersuchen. Erh"altlich im taz Shop.    </p><img class="lozad" src="/uploads/images/14/Abb-Pflege-Ei-Handcreme-Aries-taz-Shop_0433.jpg" data-src="/uploads/images/948/Abb-Pflege-Ei-Handcreme-Aries-taz-Shop_0433.jpg" alt="" title=""></img><noscript><img src="/uploads/images/948/Abb-Pflege-Ei-Handcreme-Aries-taz-Shop_0433.jpg" alt="" title=""></img></noscript></a></li></ul></div><div id="footer"><ul role="navigation" class="sitemap"><li class="news"><span itemscope="" itemtype="http://data-vocabulary.org/Breadcrumb"><a itemprop="url" href="/"><span itemprop="title">taz</span></a></span><ul><li class="first odd trodd"><a href="/Themen/!p5360/" id="menu_p5360"><span>Themen</span></a><ul></ul></li><li class="even trodd"><a href="/Politik/!p4615/" id="menu_p4615"><span>Politik</span></a><ul><li class="first odd trodd"><a href="/Politik/Deutschland/!p4616/" id="menu_p4616"><span>Deutschland</span></a></li><li class="even trodd"><a href="/Politik/Europa/!p4617/" 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				rootMargin: '1050px', // syntax similar to that of CSS Margin
				threshold: 0.1, // ratio of element convergence
				enableAutoReload: true // it will reload the new image when validating attributes changes
			});
			lazyObserver.observe();

		</script></body><!-- DEBUG end 21:16:40+02:00--></html>
018/taz.html
<?php
include ('/home/david/mysqldata.php');

\$handle = mysql_connect ("127.0.0.1", \$MYSQL_NAME, \$MYSQL_PASSWORD);

mysql_select_db ("test019", \$handle);

mysql_query ("INSERT INTO abc VALUES ("003", "004")", \$handle);

\$result = mysql_query ("SELECT * FROM abc", \$handle);
while (\$row = mysql_fetch_row (\$result))
    echo \$row [0] . " " . \$row [1] ."<br>n";
\$result = mysql_query ("SELECT * FROM abc JOIN def", \$handle);
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["abc01"] . " " . \$row ["abc02"] . " " . \$row ["def01"] . " " . \$row ["def02"] . "<br>n";
\$result = mysql_query ("SELECT * FROM abc INNER JOIN def WHERE abc.abc01 = def.def01", \$handle);
while (\$row = mysql_fetch_row (\$result))
    echo \$row [0] . " " . \$row [1] . " " . \$row [2] . " " . \$row [3] . "<br>n";
\$result = mysql_query ("SELECT * FROM abc LEFT JOIN def ON abc.abc01 = def.def01", \$handle);
while (\$row = mysql_fetch_row (\$result))
    echo \$row [0] . " " . \$row [1] . " " . \$row [2] . " " . \$row [3] . "<br>n";

mysql_close (\$handle);
?>
019/database.php
<!DOCTYPE html>
<html lang="">
  <head>
    <meta charset="utf-8">
    <title></title>
  </head>
  <body>
    <header></header>
    <main></main>
    <footer></footer>
    <form action="./form1.php" method="POST">
    <input type="password" name="password1"></input>
    <input type="submit"></input>
    </form>
  </body>
</html>
019/form1.html
<?php
session_start ();
?>

<?php
echo htmlentities (\$_POST ["password1"]);
?>

<?php
setcookie ("Cookie19", "Inhalt", time () + 3600);

echo \$_COOKIE ["Cookie19"];

?>
019/form1.php
david@intel-compute-stick:/var/www/html/018\$ mysql -u root -p
Enter password:
Welcome to the MariaDB monitor.  Commands end with ; or g.
Your MariaDB connection id is 905
Server version: 10.5.12-MariaDB-0+deb11u1 Debian 11

Copyright (c) 2000, 2018, Oracle, MariaDB Corporation Ab and others.

Type 'help;' or 'h' for help. Type 'c' to clear the current input statement.

MariaDB [(none)]> CREATE DATABASE test019;
Query OK, 1 row affected (0.047 sec)

MariaDB [(none)]> USE test019
Database changed
MariaDB [test019]> CREATE TABLE abc (abc01 VARCHAR (32), abc02 VARCHAR (32));
Query OK, 0 rows affected (0.166 sec)

MariaDB [test019]> CREATE TABLE def (def01 VARCHAR (32), def02 VARCHAR (32));
Query OK, 0 rows affected (0.079 sec)

MariaDB [test019]> INSERT INTO abc VALUES ("001", "001");
Query OK, 1 row affected (0.046 sec)

MariaDB [test019]> INSERT INTO abc VALUES ("001", "002");
Query OK, 1 row affected (0.031 sec)

MariaDB [test019]> INSERT INTO abc VALUES ("002", "001");
Query OK, 1 row affected (0.029 sec)

MariaDB [test019]> INSERT INTO abc VALUES ("002", "002");
Query OK, 1 row affected (0.030 sec)

MariaDB [test019]> INSERT INTO def VALUES ("001", "001");
Query OK, 1 row affected (0.032 sec)

MariaDB [test019]> INSERT INTO def VALUES ("001", "002");
Query OK, 1 row affected (0.033 sec)

MariaDB [test019]> INSERT INTO def VALUES ("002", "001");
Query OK, 1 row affected (0.029 sec)

MariaDB [test019]> INSERT INTO def VALUES ("002", "002");
Query OK, 1 row affected (0.028 sec)

MariaDB [test019]> SELECT * FROM abc;
+-------+-------+
| abc01 | abc02 |
+-------+-------+
| 001   | 001   |
| 001   | 002   |
| 002   | 001   |
| 002   | 002   |
+-------+-------+
4 rows in set (0.001 sec)

MariaDB [test019]> SELECT * FROM def;
+-------+-------+
| def01 | def02 |
+-------+-------+
| 001   | 001   |
| 001   | 002   |
| 002   | 001   |
| 002   | 002   |
+-------+-------+
4 rows in set (0.001 sec)

MariaDB [test019]> SELECT * FROM abc JOIN def;
+-------+-------+-------+-------+
| abc01 | abc02 | def01 | def02 |
+-------+-------+-------+-------+
| 001   | 001   | 001   | 001   |
| 001   | 002   | 001   | 001   |
| 002   | 001   | 001   | 001   |
| 002   | 002   | 001   | 001   |
| 001   | 001   | 001   | 002   |
| 001   | 002   | 001   | 002   |
| 002   | 001   | 001   | 002   |
| 002   | 002   | 001   | 002   |
| 001   | 001   | 002   | 001   |
| 001   | 002   | 002   | 001   |
| 002   | 001   | 002   | 001   |
| 002   | 002   | 002   | 001   |
| 001   | 001   | 002   | 002   |
| 001   | 002   | 002   | 002   |
| 002   | 001   | 002   | 002   |
| 002   | 002   | 002   | 002   |
+-------+-------+-------+-------+
16 rows in set (0.002 sec)

MariaDB [test019]> SELECT * FROM abc INNER JOIN def WHERE abc.abc01 = def.def01;
+-------+-------+-------+-------+
| abc01 | abc02 | def01 | def02 |
+-------+-------+-------+-------+
| 001   | 001   | 001   | 001   |
| 001   | 002   | 001   | 001   |
| 001   | 001   | 001   | 002   |
| 001   | 002   | 001   | 002   |
| 002   | 001   | 002   | 001   |
| 002   | 002   | 002   | 001   |
| 002   | 001   | 002   | 002   |
| 002   | 002   | 002   | 002   |
+-------+-------+-------+-------+
8 rows in set (0.002 sec)

MariaDB [test019]> SELECT * FROM abc INNER JOIN def WHERE abc.abc02 = def.def02;
+-------+-------+-------+-------+
| abc01 | abc02 | def01 | def02 |
+-------+-------+-------+-------+
| 001   | 001   | 001   | 001   |
| 002   | 001   | 001   | 001   |
| 001   | 002   | 001   | 002   |
| 002   | 002   | 001   | 002   |
| 001   | 001   | 002   | 001   |
| 002   | 001   | 002   | 001   |
| 001   | 002   | 002   | 002   |
| 002   | 002   | 002   | 002   |
+-------+-------+-------+-------+
8 rows in set (0.002 sec)

MariaDB [test019]> SELECT * FROM abc RIGHT JOIN def ON abc.abc02 = def.def02;
+-------+-------+-------+-------+
| abc01 | abc02 | def01 | def02 |
+-------+-------+-------+-------+
| 001   | 001   | 001   | 001   |
| 001   | 001   | 002   | 001   |
| 001   | 002   | 001   | 002   |
| 001   | 002   | 002   | 002   |
| 002   | 001   | 001   | 001   |
| 002   | 001   | 002   | 001   |
| 002   | 002   | 001   | 002   |
| 002   | 002   | 002   | 002   |
+-------+-------+-------+-------+
8 rows in set (0.028 sec)

MariaDB [test019]> QUIT
Bye
019/output01.txt
001 001<br>
001 002<br>
002 001<br>
002 002<br>
003 004<br>
003 004<br>
003 004<br>
003 004<br>
001 001 001 001<br>
001 001 001 002<br>
001 001 002 001<br>
001 001 002 002<br>
001 002 001 001<br>
001 002 001 002<br>
001 002 002 001<br>
001 002 002 002<br>
002 001 001 001<br>
002 001 001 002<br>
002 001 002 001<br>
002 001 002 002<br>
002 002 001 001<br>
002 002 001 002<br>
002 002 002 001<br>
002 002 002 002<br>
003 004 001 001<br>
003 004 001 002<br>
003 004 002 001<br>
003 004 002 002<br>
003 004 001 001<br>
003 004 001 002<br>
003 004 002 001<br>
003 004 002 002<br>
003 004 001 001<br>
003 004 001 002<br>
003 004 002 001<br>
003 004 002 002<br>
003 004 001 001<br>
003 004 001 002<br>
003 004 002 001<br>
003 004 002 002<br>
001 001 001 001<br>
001 001 001 002<br>
001 002 001 001<br>
001 002 001 002<br>
002 001 002 001<br>
002 001 002 002<br>
002 002 002 001<br>
002 002 002 002<br>
001 001 001 001<br>
001 002 001 001<br>
001 001 001 002<br>
001 002 001 002<br>
002 001 002 001<br>
002 002 002 001<br>
002 001 002 002<br>
002 002 002 002<br>
003 004  <br>
003 004  <br>
003 004  <br>
003 004  <br>
019/output02.txt
<?php
include ('/home/david/mysqldata.php');

\$handle = mysql_connect ("127.0.0.1", \$MYSQL_NAME, \$MYSQL_PASSWORD);

mysql_select_db ("test019", \$handle);

mysql_query ("INSERT INTO abc VALUES ("003", "004")", \$handle);

\$result = mysql_query ("SELECT * FROM abc", \$handle);
while (\$row = mysql_fetch_row (\$result))
    echo \$row [0] . " " . \$row [1] ."<br>n";
\$result = mysql_query ("SELECT * FROM abc JOIN def", \$handle);
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["abc01"] . " " . \$row ["abc02"] . " " . \$row ["def01"] . " " . \$row ["def02"] . "<br>n";
\$result = mysql_query ("SELECT * FROM abc INNER JOIN def WHERE abc.abc01 = def.def01", \$handle);
while (\$row = mysql_fetch_row (\$result))
    echo \$row [0] . " " . \$row [1] . " " . \$row [2] . " " . \$row [3] . "<br>n";
\$result = mysql_query ("SELECT * FROM abc LEFT JOIN def ON abc.abc01 = def.def01", \$handle);
while (\$row = mysql_fetch_row (\$result))
    echo \$row [0] . " " . \$row [1] . " " . \$row [2] . " " . \$row [3] . "<br>n";

mysql_close (\$handle);
?>
<?php
session_start ();
?>

<?php
echo htmlentities (\$_POST ["password1"]);
?>

<?php
setcookie ("Cookie19", "Inhalt", time () + 3600);

echo \$_COOKIE ["Cookie19"];

?>
<!DOCTYPE html>
<html lang="">
  <head>
    <meta charset="utf-8">
    <title></title>
  </head>
  <body>
    <header></header>
    <main></main>
    <footer></footer>
    <form action="./form1.php" method="POST">
    <input type="password" name="password1"></input>
    <input type="submit"></input>
    </form>
  </body>
</html>
david@intel-compute-stick:/var/www/html/018\$ mysql -u root -p
Enter password:
Welcome to the MariaDB monitor.  Commands end with ; or g.
Your MariaDB connection id is 905
Server version: 10.5.12-MariaDB-0+deb11u1 Debian 11

Copyright (c) 2000, 2018, Oracle, MariaDB Corporation Ab and others.

Type 'help;' or 'h' for help. Type 'c' to clear the current input statement.

MariaDB [(none)]> CREATE DATABASE test019;
Query OK, 1 row affected (0.047 sec)

MariaDB [(none)]> USE test019
Database changed
MariaDB [test019]> CREATE TABLE abc (abc01 VARCHAR (32), abc02 VARCHAR (32));
Query OK, 0 rows affected (0.166 sec)

MariaDB [test019]> CREATE TABLE def (def01 VARCHAR (32), def02 VARCHAR (32));
Query OK, 0 rows affected (0.079 sec)

MariaDB [test019]> INSERT INTO abc VALUES ("001", "001");
Query OK, 1 row affected (0.046 sec)

MariaDB [test019]> INSERT INTO abc VALUES ("001", "002");
Query OK, 1 row affected (0.031 sec)

MariaDB [test019]> INSERT INTO abc VALUES ("002", "001");
Query OK, 1 row affected (0.029 sec)

MariaDB [test019]> INSERT INTO abc VALUES ("002", "002");
Query OK, 1 row affected (0.030 sec)

MariaDB [test019]> INSERT INTO def VALUES ("001", "001");
Query OK, 1 row affected (0.032 sec)

MariaDB [test019]> INSERT INTO def VALUES ("001", "002");
Query OK, 1 row affected (0.033 sec)

MariaDB [test019]> INSERT INTO def VALUES ("002", "001");
Query OK, 1 row affected (0.029 sec)

MariaDB [test019]> INSERT INTO def VALUES ("002", "002");
Query OK, 1 row affected (0.028 sec)

MariaDB [test019]> SELECT * FROM abc;
+-------+-------+
| abc01 | abc02 |
+-------+-------+
| 001   | 001   |
| 001   | 002   |
| 002   | 001   |
| 002   | 002   |
+-------+-------+
4 rows in set (0.001 sec)

MariaDB [test019]> SELECT * FROM def;
+-------+-------+
| def01 | def02 |
+-------+-------+
| 001   | 001   |
| 001   | 002   |
| 002   | 001   |
| 002   | 002   |
+-------+-------+
4 rows in set (0.001 sec)

MariaDB [test019]> SELECT * FROM abc JOIN def;
+-------+-------+-------+-------+
| abc01 | abc02 | def01 | def02 |
+-------+-------+-------+-------+
| 001   | 001   | 001   | 001   |
| 001   | 002   | 001   | 001   |
| 002   | 001   | 001   | 001   |
| 002   | 002   | 001   | 001   |
| 001   | 001   | 001   | 002   |
| 001   | 002   | 001   | 002   |
| 002   | 001   | 001   | 002   |
| 002   | 002   | 001   | 002   |
| 001   | 001   | 002   | 001   |
| 001   | 002   | 002   | 001   |
| 002   | 001   | 002   | 001   |
| 002   | 002   | 002   | 001   |
| 001   | 001   | 002   | 002   |
| 001   | 002   | 002   | 002   |
| 002   | 001   | 002   | 002   |
| 002   | 002   | 002   | 002   |
+-------+-------+-------+-------+
16 rows in set (0.002 sec)

MariaDB [test019]> SELECT * FROM abc INNER JOIN def WHERE abc.abc01 = def.def01;
+-------+-------+-------+-------+
| abc01 | abc02 | def01 | def02 |
+-------+-------+-------+-------+
| 001   | 001   | 001   | 001   |
| 001   | 002   | 001   | 001   |
| 001   | 001   | 001   | 002   |
| 001   | 002   | 001   | 002   |
| 002   | 001   | 002   | 001   |
| 002   | 002   | 002   | 001   |
| 002   | 001   | 002   | 002   |
| 002   | 002   | 002   | 002   |
+-------+-------+-------+-------+
8 rows in set (0.002 sec)

MariaDB [test019]> SELECT * FROM abc INNER JOIN def WHERE abc.abc02 = def.def02;
+-------+-------+-------+-------+
| abc01 | abc02 | def01 | def02 |
+-------+-------+-------+-------+
| 001   | 001   | 001   | 001   |
| 002   | 001   | 001   | 001   |
| 001   | 002   | 001   | 002   |
| 002   | 002   | 001   | 002   |
| 001   | 001   | 002   | 001   |
| 002   | 001   | 002   | 001   |
| 001   | 002   | 002   | 002   |
| 002   | 002   | 002   | 002   |
+-------+-------+-------+-------+
8 rows in set (0.002 sec)

MariaDB [test019]> SELECT * FROM abc RIGHT JOIN def ON abc.abc02 = def.def02;
+-------+-------+-------+-------+
| abc01 | abc02 | def01 | def02 |
+-------+-------+-------+-------+
| 001   | 001   | 001   | 001   |
| 001   | 001   | 002   | 001   |
| 001   | 002   | 001   | 002   |
| 001   | 002   | 002   | 002   |
| 002   | 001   | 001   | 001   |
| 002   | 001   | 002   | 001   |
| 002   | 002   | 001   | 002   |
| 002   | 002   | 002   | 002   |
+-------+-------+-------+-------+
8 rows in set (0.028 sec)

MariaDB [test019]> QUIT
Bye
001 001<br>
001 002<br>
002 001<br>
002 002<br>
003 004<br>
003 004<br>
003 004<br>
003 004<br>
001 001 001 001<br>
001 001 001 002<br>
001 001 002 001<br>
001 001 002 002<br>
001 002 001 001<br>
001 002 001 002<br>
001 002 002 001<br>
001 002 002 002<br>
002 001 001 001<br>
002 001 001 002<br>
002 001 002 001<br>
002 001 002 002<br>
002 002 001 001<br>
002 002 001 002<br>
002 002 002 001<br>
002 002 002 002<br>
003 004 001 001<br>
003 004 001 002<br>
003 004 002 001<br>
003 004 002 002<br>
003 004 001 001<br>
003 004 001 002<br>
003 004 002 001<br>
003 004 002 002<br>
003 004 001 001<br>
003 004 001 002<br>
003 004 002 001<br>
003 004 002 002<br>
003 004 001 001<br>
003 004 001 002<br>
003 004 002 001<br>
003 004 002 002<br>
001 001 001 001<br>
001 001 001 002<br>
001 002 001 001<br>
001 002 001 002<br>
002 001 002 001<br>
002 001 002 002<br>
002 002 002 001<br>
002 002 002 002<br>
001 001 001 001<br>
001 002 001 001<br>
001 001 001 002<br>
001 002 001 002<br>
002 001 002 001<br>
002 002 002 001<br>
002 001 002 002<br>
002 002 002 002<br>
003 004  <br>
003 004  <br>
003 004  <br>
003 004  <br>
019/output03.out
<?php
include ('/home/david/mysqldata.php');

\$handle = mysql_connect ("127.0.0.1", \$MYSQL_NAME, \$MYSQL_PASSWORD);

mysql_select_db ("test020", \$handle);

mysql_query ("INSERT INTO abc VALUES ("002", "001")", \$handle);

\$result = mysql_query ("SELECT * FROM abc INNER JOIN def WHERE abc.name1 = def.name2", \$handle);

while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["name1"] . " " . \$row ["name2"] . " " . \$row ["name1"] . " " . \$row ["name2"] . "<br>n";

mysql_close (\$handle);

?>
020/database.php
<?php
session_start ();
?>

<form method="POST" action="./form1.php">
<input type="password" name="password1"></input>
<input type="submit"></input>
</form>

<?php

echo htmlentities (\$_POST ["password1"]);

echo session_id ();

setcookie ("Cookie20", "Inhalt", time () + 3600);

if (isset (\$_COOKIE ["Cookie20"]))
    echo \$_COOKIE ["Cookie20"];
else
   echo "<script>window.location="./form1.php";</script>";
?>
020/form1.php
david@intel-compute-stick:~\$ mysql -u root -p
Enter password:
Welcome to the MariaDB monitor.  Commands end with ; or g.
Your MariaDB connection id is 1081
Server version: 10.5.12-MariaDB-0+deb11u1 Debian 11

Copyright (c) 2000, 2018, Oracle, MariaDB Corporation Ab and others.

Type 'help;' or 'h' for help. Type 'c' to clear the current input statement.

MariaDB [(none)]> SHOW DATABASES;
+--------------------+
| Database           |
+--------------------+
| information_schema |
| mysocial_database  |
| mysql              |
| mytest             |
| performance_schema |
| test001            |
| test002            |
| test003            |
| test004            |
| test005            |
| test006            |
| test007            |
| test008            |
| test009            |
| test010            |
| test011            |
| test012            |
| test013            |
| test014            |
| test015            |
| test016            |
| test019            |
+--------------------+
22 rows in set (0.043 sec)

MariaDB [(none)]> CREATE DATABASE test020
    -> ;
Query OK, 1 row affected (0.001 sec)

MariaDB [(none)]> USE test020;
Database changed
MariaDB [test020]> CREATE TABLE abc (name1 VARCHAR (32), name2 VARCHAR (32));
Query OK, 0 rows affected (0.095 sec)

MariaDB [test020]> CREATE TABLE def (name1 VARCHAR (32), name2 VARCHAR (32));
Query OK, 0 rows affected (0.058 sec)

MariaDB [test020]> INSERT INOT abc VALUES ("001", "001");
ERROR 1064 (42000): You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near 'abc VALUES ("001", "001")' at line 1
MariaDB [test020]> INSERT INTO abc VALUES ("001", "001");
Query OK, 1 row affected (0.035 sec)

MariaDB [test020]> INSERT INTO abc VALUES ("001", "002");
Query OK, 1 row affected (0.027 sec)

MariaDB [test020]> INSERT INTO def VALUES ("001", "001");
Query OK, 1 row affected (0.033 sec)

MariaDB [test020]> INSERT INTO def VALUES ("001", "002");
Query OK, 1 row affected (0.030 sec)

MariaDB [test020]> INSERT INTO def VALUES ("002", "001");
Query OK, 1 row affected (0.032 sec)

MariaDB [test020]> SELECT * FROM abc;
+-------+-------+
| name1 | name2 |
+-------+-------+
| 001   | 001   |
| 001   | 002   |
+-------+-------+
2 rows in set (0.001 sec)

MariaDB [test020]> SELECT * FROM abc JOIN def;
+-------+-------+-------+-------+
| name1 | name2 | name1 | name2 |
+-------+-------+-------+-------+
| 001   | 001   | 001   | 001   |
| 001   | 002   | 001   | 001   |
| 001   | 001   | 001   | 002   |
| 001   | 002   | 001   | 002   |
| 001   | 001   | 002   | 001   |
| 001   | 002   | 002   | 001   |
+-------+-------+-------+-------+
6 rows in set (0.030 sec)

MariaDB [test020]> SELECT * FROM abc INNER JOIN def WHERE abc.name1 = def.name2;
+-------+-------+-------+-------+
| name1 | name2 | name1 | name2 |
+-------+-------+-------+-------+
| 001   | 001   | 001   | 001   |
| 001   | 002   | 001   | 001   |
| 001   | 001   | 002   | 001   |
| 001   | 002   | 002   | 001   |
+-------+-------+-------+-------+
4 rows in set (0.025 sec)

MariaDB [test020]> QUIT
Bye
david@intel-compute-stick:~\$

020/output01.txt
<?php
include ('/home/david/mysqldata.php');

\$handle = mysql_connect ("127.0.0.1", \$MYSQL_NAME, \$MYSQL_PASSWORD);

mysql_select_db ("test021", \$handle);

mysql_query ("INSERT INTO def VALUES ("002", "001")", \$handle);
\$result = mysql_query ("SELECT * FROM abc JOIN def", \$handle);
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["name1"] . " " . \$row ["name2"] . " " . \$row ["name3"] . " " . \$row ["name4"] . "<br>n";
\$result = mysql_query ("SELECT * FROM abc INNER JOIN def WHERE abc.name1 = def.name3", \$handle);
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["name1"] . " " . \$row ["name2"] . " " . \$row ["name3"] . " " . \$row ["name4"] . "<br>n";
mysql_close (\$handle);
?>
021/database.php
<?php
session_start ();
?>

<form action="./myphptest.php" method="POST">
<input type="password" name="password1"></input>
<input type="submit"></input>
</form>

<?php
echo session_id ();

setcookie ("Cookie21", "Inhalt", time () + 3600);

echo htmlentities (\$_POST ["password1"]);

echo \$_COOKIE ["Cookie21"];

if (isset (\$_COOKIE ["Cookie21"]));
else
    echo "<script>window.location="./myphptest.php";</script>";
?>
021/myphptest.php
david@intel-compute-stick:~\$ mysql -u root -p
Enter password:
Welcome to the MariaDB monitor.  Commands end with ; or g.
Your MariaDB connection id is 640
Server version: 10.5.12-MariaDB-0+deb11u1 Debian 11

Copyright (c) 2000, 2018, Oracle, MariaDB Corporation Ab and others.

Type 'help;' or 'h' for help. Type 'c' to clear the current input statement.

MariaDB [(none)]> CREATE DATBASE test021
    -> ;
ERROR 1064 (42000): You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near 'DATBASE test021' at line 1
MariaDB [(none)]> CREATE DATABASE test021;
Query OK, 1 row affected (0.001 sec)

MariaDB [(none)]> USE test021
Database changed
MariaDB [test021]> CREATE TABLE abc (name1 VARCHAR (32), name2 VARCHAR (32));
Query OK, 0 rows affected (0.106 sec)

MariaDB [test021]> CREATE TABLE def (name3 VARCHAR (32), name4 VARCHAR (32));
Query OK, 0 rows affected (0.060 sec)

MariaDB [test021]> INSERT INTO abc VALUES ("001", "002");
Query OK, 1 row affected (0.032 sec)

MariaDB [test021]> INSERT INTO abc VALUES ("001", "001");
Query OK, 1 row affected (0.031 sec)

MariaDB [test021]> INSERT INTO abc (name2, name1) VALUES ("001", "002");
Query OK, 1 row affected (0.026 sec)

MariaDB [test021]> INSERT INTO abc (name1, name2) VALUES ("002", "002");
Query OK, 1 row affected (0.029 sec)

MariaDB [test021]> INSERT INTO def (name3, name4) VALUES ("abc", "def");
Query OK, 1 row affected (0.029 sec)

MariaDB [test021]> INSERT INTO def (name3, name4) VALUES ("abc", "abc");
Query OK, 1 row affected (0.029 sec)

MariaDB [test021]> INSERT INTO def (name3, name4) VALUES ("001", "001");
Query OK, 1 row affected (0.029 sec)

MariaDB [test021]> INSERT INTO def (name3, name4) VALUES ("002", "002");
Query OK, 1 row affected (0.029 sec)

MariaDB [test021]> SELECT * FROM abc;
+-------+-------+
| name1 | name2 |
+-------+-------+
| 001   | 002   |
| 001   | 001   |
| 002   | 001   |
| 002   | 002   |
+-------+-------+
4 rows in set (0.001 sec)

MariaDB [test021]> SELECT * FROM def;
+-------+-------+
| name3 | name4 |
+-------+-------+
| abc   | def   |
| abc   | abc   |
| 001   | 001   |
| 002   | 002   |
+-------+-------+
4 rows in set (0.001 sec)

MariaDB [test021]> SELECT * FROM abc JOIN def;
+-------+-------+-------+-------+
| name1 | name2 | name3 | name4 |
+-------+-------+-------+-------+
| 001   | 002   | abc   | def   |
| 001   | 001   | abc   | def   |
| 002   | 001   | abc   | def   |
| 002   | 002   | abc   | def   |
| 001   | 002   | abc   | abc   |
| 001   | 001   | abc   | abc   |
| 002   | 001   | abc   | abc   |
| 002   | 002   | abc   | abc   |
| 001   | 002   | 001   | 001   |
| 001   | 001   | 001   | 001   |
| 002   | 001   | 001   | 001   |
| 002   | 002   | 001   | 001   |
| 001   | 002   | 002   | 002   |
| 001   | 001   | 002   | 002   |
| 002   | 001   | 002   | 002   |
| 002   | 002   | 002   | 002   |
+-------+-------+-------+-------+
16 rows in set (0.001 sec)

MariaDB [test021]> SELECT * FROM abc INNER JOIN def WHERE abc.name1 = def.nam2;
ERROR 1054 (42S22): Unknown column 'def.nam2' in 'where clause'
MariaDB [test021]> SELECT * FROM abc INNER JOIN def WHERE abc.name1 = def.name3;
+-------+-------+-------+-------+
| name1 | name2 | name3 | name4 |
+-------+-------+-------+-------+
| 001   | 002   | 001   | 001   |
| 001   | 001   | 001   | 001   |
| 002   | 001   | 002   | 002   |
| 002   | 002   | 002   | 002   |
+-------+-------+-------+-------+
4 rows in set (0.027 sec)

MariaDB [test021]> QUIT
Bye
david@intel-compute-stick:~\$

021/output01.txt
001 002 abc def<br>
001 001 abc def<br>
002 001 abc def<br>
002 002 abc def<br>
001 002 abc abc<br>
001 001 abc abc<br>
002 001 abc abc<br>
002 002 abc abc<br>
001 002 001 001<br>
001 001 001 001<br>
002 001 001 001<br>
002 002 001 001<br>
001 002 002 002<br>
001 001 002 002<br>
002 001 002 002<br>
002 002 002 002<br>
001 002 002 001<br>
001 001 002 001<br>
002 001 002 001<br>
002 002 002 001<br>
001 002 002 001<br>
001 001 002 001<br>
002 001 002 001<br>
002 002 002 001<br>
001 002 001 001<br>
001 001 001 001<br>
002 001 002 002<br>
002 002 002 002<br>
002 001 002 001<br>
002 002 002 001<br>
002 001 002 001<br>
002 002 002 001<br>
021/output02.txt
<?php
include ('/home/david/mysqldata.php');

\$handle = mysql_connect ("127.0.0.1", \$MYSQL_NAME, \$MYSQL_PASSWORD);

mysql_select_db ("test022", \$handle);

mysql_query ("INSERT INTO def VALUES ("001", "002")", \$handle);

\$result = mysql_query ("SELECT * FROM abc JOIN def", \$handle);
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["name1"] . " " . \$row ["name2"] . " " . \$row ["name3"] . " " . \$row ["name4"] . "<br>n";

\$result = mysql_query ("SELECT * FROM abc INNER JOIN def WHERE abc.name1 = def.name3", \$handle);
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["name1"] . " " . \$row ["name2"] . " " . \$row ["name3"] . " " . \$row ["name4"] . "<br>n";
mysql_close (\$handle);
?>
022/database.php
<?php
session_start ();
?>

<FORM METHOD="GET" ACTION="./myphp.php">
<INPUT TYPE="password" name="password1"></INPUT>
<INPUT TYPE="submit"></INPUT>
</FORM>

<?php
echo htmlentities (\$_GET ["password1"]);

echo session_id ();

setcookie ("Cookie22", "Inhalt", time () + 3600);

echo \$_COOKIE ["Cookie22"];
?>


022/myphp.php
david@intel-compute-stick:/var/www/html/022\$ mysql -u root -p
Enter password:
Welcome to the MariaDB monitor.  Commands end with ; or g.
Your MariaDB connection id is 729
Server version: 10.5.12-MariaDB-0+deb11u1 Debian 11

Copyright (c) 2000, 2018, Oracle, MariaDB Corporation Ab and others.

Type 'help;' or 'h' for help. Type 'c' to clear the current input statement.

MariaDB [(none)]> CREATE DATABASE test022
    -> ;
Query OK, 1 row affected (0.001 sec)

MariaDB [(none)]> USE test022
Database changed
MariaDB [test022]> CREATE TABLE abc (name1 VARCHAR (32), name2 VARCHAR (32));
Query OK, 0 rows affected (0.066 sec)

MariaDB [test022]> CREATE TABLE def (name3 VARCHAR (32), name3 VARCHAR (32));
ERROR 1060 (42S21): Duplicate column name 'name3'
MariaDB [test022]> CREATE TABLE def (name3 VARCHAR (32), name4 VARCHAR (32));
Query OK, 0 rows affected (0.067 sec)

MariaDB [test022]> INSERT INTO abc VALUES ("001", "002");
Query OK, 1 row affected (0.036 sec)

MariaDB [test022]> INSERT INTO abc (name2, name1) VALUES ("001", "002");
Query OK, 1 row affected (0.032 sec)

MariaDB [test022]> INSERT INTO abc VALUES ("001", "001");
Query OK, 1 row affected (0.035 sec)

MariaDB [test022]> INSERT INTO abc VALUES ("002", "002");
Query OK, 1 row affected (0.028 sec)

MariaDB [test022]> INSERT INTO def VALUES ("abc", "def");
Query OK, 1 row affected (0.031 sec)

MariaDB [test022]> INSERT INTO def VALUES ("abc", "abc");
Query OK, 1 row affected (0.027 sec)

MariaDB [test022]> INSERT INTO def VALUES ("001", "001");
Query OK, 1 row affected (0.028 sec)

MariaDB [test022]> INSERT INTO def VALUES ("002", "002");
Query OK, 1 row affected (0.033 sec)

MariaDB [test022]> SELECT * FROM abc;
+-------+-------+
| name1 | name2 |
+-------+-------+
| 001   | 002   |
| 002   | 001   |
| 001   | 001   |
| 002   | 002   |
+-------+-------+
4 rows in set (0.027 sec)

MariaDB [test022]> SELECT * FROM def;
+-------+-------+
| name3 | name4 |
+-------+-------+
| abc   | def   |
| abc   | abc   |
| 001   | 001   |
| 002   | 002   |
+-------+-------+
4 rows in set (0.028 sec)

MariaDB [test022]> SELECT * FROM abc JOIN def;
+-------+-------+-------+-------+
| name1 | name2 | name3 | name4 |
+-------+-------+-------+-------+
| 001   | 002   | abc   | def   |
| 002   | 001   | abc   | def   |
| 001   | 001   | abc   | def   |
| 002   | 002   | abc   | def   |
| 001   | 002   | abc   | abc   |
| 002   | 001   | abc   | abc   |
| 001   | 001   | abc   | abc   |
| 002   | 002   | abc   | abc   |
| 001   | 002   | 001   | 001   |
| 002   | 001   | 001   | 001   |
| 001   | 001   | 001   | 001   |
| 002   | 002   | 001   | 001   |
| 001   | 002   | 002   | 002   |
| 002   | 001   | 002   | 002   |
| 001   | 001   | 002   | 002   |
| 002   | 002   | 002   | 002   |
+-------+-------+-------+-------+
16 rows in set (0.028 sec)

MariaDB [test022]> SELECT * FROM abc INNER JOIN def WHERE abc.name1 = def.name3;
+-------+-------+-------+-------+
| name1 | name2 | name3 | name4 |
+-------+-------+-------+-------+
| 001   | 002   | 001   | 001   |
| 001   | 001   | 001   | 001   |
| 002   | 001   | 002   | 002   |
| 002   | 002   | 002   | 002   |
+-------+-------+-------+-------+
4 rows in set (0.029 sec)

MariaDB [test022]> SELECT * FROM abc RIGHT JOIN def ON abc.name1 = def.name3;
+-------+-------+-------+-------+
| name1 | name2 | name3 | name4 |
+-------+-------+-------+-------+
| 001   | 002   | 001   | 001   |
| 002   | 001   | 002   | 002   |
| 001   | 001   | 001   | 001   |
| 002   | 002   | 002   | 002   |
| NULL  | NULL  | abc   | def   |
| NULL  | NULL  | abc   | abc   |
+-------+-------+-------+-------+
6 rows in set (0.027 sec)

MariaDB [test022]> quit
Bye
david@intel-compute-stick:/var/www/html/022\$

022/output01.txt
001 002 abc def<br>
002 001 abc def<br>
001 001 abc def<br>
002 002 abc def<br>
001 002 abc abc<br>
002 001 abc abc<br>
001 001 abc abc<br>
002 002 abc abc<br>
001 002 001 001<br>
002 001 001 001<br>
001 001 001 001<br>
002 002 001 001<br>
001 002 002 002<br>
002 001 002 002<br>
001 001 002 002<br>
002 002 002 002<br>
001 002 001 002<br>
002 001 001 002<br>
001 001 001 002<br>
002 002 001 002<br>
001 002 001 002<br>
002 001 001 002<br>
001 001 001 002<br>
002 002 001 002<br>
001 002 001 002<br>
002 001 001 002<br>
001 001 001 002<br>
002 002 001 002<br>
001 002 001 001<br>
001 001 001 001<br>
002 001 002 002<br>
002 002 002 002<br>
001 002 001 002<br>
001 001 001 002<br>
001 002 001 002<br>
001 001 001 002<br>
001 002 001 002<br>
001 001 001 002<br>
022/output02.txt
david@intel-compute-stick:/var/www/html/022\$ telnet 127.0.0.1 80
Trying 127.0.0.1...
Connected to 127.0.0.1.
Escape character is '\^]'.
GET /022/myphp.php?password1=Hallo HTTP/1.1
host: localhost

HTTP/1.1 200 OK
Date: Fri, 15 Apr 2022 15:29:36 GMT
Server: Apache/2.4.52 (Debian)
Set-Cookie: PHPSESSID=ur4t3p57rhr5k8d9qpq4muldr5; path=/
Expires: Thu, 19 Nov 1981 08:52:00 GMT
Cache-Control: no-store, no-cache, must-revalidate, post-check=0, pre-check=0
Pragma: no-cache
Set-Cookie: Cookie22=Inhalt; expires=Fri, 15-Apr-2022 16:29:41 GMT; Max-Age=3600
Vary: Accept-Encoding
Content-Length: 163
Content-Type: text/html; charset=UTF-8


<FORM METHOD="GET" ACTION="./myphp.php">
<INPUT TYPE="password" name="password1"></INPUT>
<INPUT TYPE="submit"></INPUT>
</FORM>

Hallour4t3p57rhr5k8d9qpq4muldr5




quiConnection closed by foreign host.

022/output03.txt
<?php
include ('/home/david/mysqldata.php');

\$handle = mysql_connect ("127.0.0.1", \$MYSQL_NAME, \$MYSQL_PASSWORD);

mysql_select_db ("test023", \$handle);

mysql_query ("INSERT INTO abc VALUES ("abc", "def")", \$handle);

\$result = mysql_query ("SELECT * FROM abc JOIN def", \$handle);
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["name1"] . " " . \$row ["name2"] . " " . \$row ["name3"] . " " . \$row ["name4"] . "<br>n";

\$result = mysql_query ("SELECT * FROM abc INNER JOIN def WHERE abc.name1 = def.name3", \$handle);
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["name1"] . " " . \$row ["name2"] . " " . \$row ["name3"] . " " . \$row ["name4"] . "<br>n";

mysql_close (\$handle);
?>
023/database.php
david@intel-compute-stick:~\$ mysql -u root -p
Enter password:
Welcome to the MariaDB monitor.  Commands end with ; or g.
Your MariaDB connection id is 806
Server version: 10.5.12-MariaDB-0+deb11u1 Debian 11

Copyright (c) 2000, 2018, Oracle, MariaDB Corporation Ab and others.

Type 'help;' or 'h' for help. Type 'c' to clear the current input statement.

MariaDB [(none)]> CREATE DATABASE test023;
Query OK, 1 row affected (0.001 sec)

MariaDB [(none)]> USE test023;
Database changed
MariaDB [test023]> CREATE TABLE abc (name1 VARCHAR(32), name2 VARCHAR (32))
    -> ;
Query OK, 0 rows affected (0.073 sec)

MariaDB [test023]> CREATE TABLE def (name3 VARCHAR (32), name4 VARCHAR (32));
Query OK, 0 rows affected (0.064 sec)

MariaDB [test023]> INSERT INTO abc (name1, name2) VALUES ("001", "002");
Query OK, 1 row affected (0.032 sec)

MariaDB [test023]> INSERT INTO abc VALUES ("001", "001");
Query OK, 1 row affected (0.028 sec)

MariaDB [test023]> INSERT INTO abc VALUES ("002", "001");
Query OK, 1 row affected (0.028 sec)

MariaDB [test023]> INSERT INTO abc (name2, name1) VALUES ("002", "002");
Query OK, 1 row affected (0.031 sec)

MariaDB [test023]> INSERT INTO def VALUES ("001", "001");
Query OK, 1 row affected (0.031 sec)

MariaDB [test023]> INSERT INTO def VALUES ("002", "002");
Query OK, 1 row affected (0.031 sec)

MariaDB [test023]> INSERT INTO def (name1, name2) VALUES ("abc", "def");
ERROR 1054 (42S22): Unknown column 'name1' in 'field list'
MariaDB [test023]> INSERT INTO def (name3, name4) VALUES ("abc", "def");
Query OK, 1 row affected (0.030 sec)

MariaDB [test023]> INSERT INTO def (name4, name3) VALUES ("abc", "def");
Query OK, 1 row affected (0.030 sec)

MariaDB [test023]> SELECT * FROM abc;
+-------+-------+
| name1 | name2 |
+-------+-------+
| 001   | 002   |
| 001   | 001   |
| 002   | 001   |
| 002   | 002   |
+-------+-------+
4 rows in set (0.001 sec)

MariaDB [test023]> SELECT * FROM def;
+-------+-------+
| name3 | name4 |
+-------+-------+
| 001   | 001   |
| 002   | 002   |
| abc   | def   |
| def   | abc   |
+-------+-------+
4 rows in set (0.029 sec)

MariaDB [test023]> SELECT * FROM abc JOIN def;
+-------+-------+-------+-------+
| name1 | name2 | name3 | name4 |
+-------+-------+-------+-------+
| 001   | 002   | 001   | 001   |
| 001   | 001   | 001   | 001   |
| 002   | 001   | 001   | 001   |
| 002   | 002   | 001   | 001   |
| 001   | 002   | 002   | 002   |
| 001   | 001   | 002   | 002   |
| 002   | 001   | 002   | 002   |
| 002   | 002   | 002   | 002   |
| 001   | 002   | abc   | def   |
| 001   | 001   | abc   | def   |
| 002   | 001   | abc   | def   |
| 002   | 002   | abc   | def   |
| 001   | 002   | def   | abc   |
| 001   | 001   | def   | abc   |
| 002   | 001   | def   | abc   |
| 002   | 002   | def   | abc   |
+-------+-------+-------+-------+
16 rows in set (0.028 sec)

MariaDB [test023]> SELECT * FROM abc INNER JOIN def WHERE abc.name1 = def.name3;
+-------+-------+-------+-------+
| name1 | name2 | name3 | name4 |
+-------+-------+-------+-------+
| 001   | 002   | 001   | 001   |
| 001   | 001   | 001   | 001   |
| 002   | 001   | 002   | 002   |
| 002   | 002   | 002   | 002   |
+-------+-------+-------+-------+
4 rows in set (0.025 sec)

MariaDB [test023]> SELECT * FROM abc INNER JON def WHERE abc.name2 = def.name4;
ERROR 1064 (42000): You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near 'JON def WHERE abc.name2 = def.name4' at line 1
MariaDB [test023]> SELECT * FROM abc INNER JOIN def WHERE abc.name2 = def.name4;
+-------+-------+-------+-------+
| name1 | name2 | name3 | name4 |
+-------+-------+-------+-------+
| 001   | 001   | 001   | 001   |
| 002   | 001   | 001   | 001   |
| 001   | 002   | 002   | 002   |
| 002   | 002   | 002   | 002   |
+-------+-------+-------+-------+
4 rows in set (0.030 sec)

MariaDB [test023]> SELECT * FROM abc RIGHT JOIN def ON abc.name1 = def.name3;
+-------+-------+-------+-------+
| name1 | name2 | name3 | name4 |
+-------+-------+-------+-------+
| 001   | 002   | 001   | 001   |
| 001   | 001   | 001   | 001   |
| 002   | 001   | 002   | 002   |
| 002   | 002   | 002   | 002   |
| NULL  | NULL  | abc   | def   |
| NULL  | NULL  | def   | abc   |
+-------+-------+-------+-------+
6 rows in set (0.028 sec)

MariaDB [test023]> quit
Bye
david@intel-compute-stick:~\$

023/output01.txt
001 002 001 001<br>
001 002 002 002<br>
001 002 abc def<br>
001 002 def abc<br>
001 001 001 001<br>
001 001 002 002<br>
001 001 abc def<br>
001 001 def abc<br>
002 001 001 001<br>
002 001 002 002<br>
002 001 abc def<br>
002 001 def abc<br>
002 002 001 001<br>
002 002 002 002<br>
002 002 abc def<br>
002 002 def abc<br>
abc def 001 001<br>
abc def 002 002<br>
abc def abc def<br>
abc def def abc<br>
abc def 001 001<br>
abc def 002 002<br>
abc def abc def<br>
abc def def abc<br>
abc def 001 001<br>
abc def 002 002<br>
abc def abc def<br>
abc def def abc<br>
abc def 001 001<br>
abc def 002 002<br>
abc def abc def<br>
abc def def abc<br>
001 002 001 001<br>
001 001 001 001<br>
002 001 002 002<br>
002 002 002 002<br>
abc def abc def<br>
abc def abc def<br>
abc def abc def<br>
abc def abc def<br>
023/output02.txt
david@intel-compute-stick:/var/www/html/023\$ telnet 127.0.0.1 80
Trying 127.0.0.1...
Connected to 127.0.0.1.
Escape character is '\^]'.
GET /023/phptest.php?text1=Hallo HTTP/1.1
host: localhost

HTTP/1.1 200 OK
Date: Sat, 16 Apr 2022 16:49:32 GMT
Server: Apache/2.4.52 (Debian)
Set-Cookie: PHPSESSID=dkmv6c6daou4viq8uj0ebl9re6; path=/
Expires: Thu, 19 Nov 1981 08:52:00 GMT
Cache-Control: no-store, no-cache, must-revalidate, post-check=0, pre-check=0
Pragma: no-cache
Set-Cookie: Cookie23=Inhalt; expires=Sat, 16-Apr-2022 17:49:37 GMT; Max-Age=3600
Vary: Accept-Encoding
Content-Length: 153
Content-Type: text/html; charset=UTF-8


<form action="./form1.php" method="GET">
<input type="text" name="text1"></input>
<input type="submit"></input>
</form>

Hallodkmv6c6daou4viq8uj0ebl9re6Connection closed by foreign host.
david@intel-compute-stick:/var/www/html/023\$

023/output03.txt
<?php
session_start ();
?>

<form action="./form1.php" method="GET">
<input type="text" name="text1"></input>
<input type="submit"></input>
</form>

<?php
setcookie ("Cookie23", "Inhalt", time () + 3600);

echo \$_COOKIE ["Cookie23"];

echo htmlentities (\$_GET ["text1"]);

echo session_id ();
?>
023/phptest.php
<?php
include ('/home/david/mysqldata.php');

\$handle = mysql_connect ("127.0.0.1", \$MYSQL_NAME, \$MYSQL_PASSWORD);

mysql_select_db ("test024", \$handle);

\$result = mysql_query ("INSERT INTO def VALUES ("002", "002")", \$handle);

\$result = mysql_query ("SELECT * FROM abc JOIN def", \$handle);

while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["name1"] . " " . \$row ["name2"] . " " . \$row ["name3"] . " " . \$row ["name4"] . "<br>n";
\$result = mysql_query ("SELECT * FROM abc INNER JOIN def WHERE abc.name1 = def.name3", \$handle);
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["name1"] . " " . \$row ["name2"] . " " . \$row ["name3"] . " " . \$row ["name4"] . "<br>n";
mysql_close (\$handle);
?>
024/database.php
david@intel-compute-stick:~\$ mysql -u root -p
Enter password:
Welcome to the MariaDB monitor.  Commands end with ; or g.
Your MariaDB connection id is 914
Server version: 10.5.12-MariaDB-0+deb11u1 Debian 11

Copyright (c) 2000, 2018, Oracle, MariaDB Corporation Ab and others.

Type 'help;' or 'h' for help. Type 'c' to clear the current input statement.

MariaDB [(none)]> CREATE DATABASE test024;
Query OK, 1 row affected (0.001 sec)

MariaDB [(none)]> USE test024;
Database changed
MariaDB [test024]> CREATE TABLE abc (name1 VARCHAR (32), name2 VARCHAR (32));
Query OK, 0 rows affected (0.070 sec)

MariaDB [test024]> CREATE TABLE def (name3 VARCHAR (32), name4 VARCHAR (32));
Query OK, 0 rows affected (0.058 sec)

MariaDB [test024]> INSERT INTO abc VALUES ("001", "002");
Query OK, 1 row affected (0.036 sec)

MariaDB [test024]> INSERT INTO abc (name1, name2) VALUES ("001", "002");
Query OK, 1 row affected (0.030 sec)

MariaDB [test024]> INSERT INTO abc (name2, name1) VALUES ("001", "002");
Query OK, 1 row affected (0.029 sec)

MariaDB [test024]> INSERT INTO abc VALUES ("002", "002");
Query OK, 1 row affected (0.027 sec)

MariaDB [test024]> INSERT INTO def VALUES ("abc", "abc");
Query OK, 1 row affected (0.030 sec)

MariaDB [test024]> INSERT INTO def VALUES ("abc", "def");
Query OK, 1 row affected (0.029 sec)

MariaDB [test024]> INSERT INTO def VALUES ("001", "002");
Query OK, 1 row affected (0.031 sec)

MariaDB [test024]> INSERT INTO def VALUES ("001", "001");
Query OK, 1 row affected (0.034 sec)

MariaDB [test024]> SELECT * FROM abc;
+-------+-------+
| name1 | name2 |
+-------+-------+
| 001   | 002   |
| 001   | 002   |
| 002   | 001   |
| 002   | 002   |
+-------+-------+
4 rows in set (0.001 sec)

MariaDB [test024]> SELECT * FROM def;
+-------+-------+
| name3 | name4 |
+-------+-------+
| abc   | abc   |
| abc   | def   |
| 001   | 002   |
| 001   | 001   |
+-------+-------+
4 rows in set (0.002 sec)

MariaDB [test024]> SELECT * FROM abc JOIN def;
+-------+-------+-------+-------+
| name1 | name2 | name3 | name4 |
+-------+-------+-------+-------+
| 001   | 002   | abc   | abc   |
| 001   | 002   | abc   | abc   |
| 002   | 001   | abc   | abc   |
| 002   | 002   | abc   | abc   |
| 001   | 002   | abc   | def   |
| 001   | 002   | abc   | def   |
| 002   | 001   | abc   | def   |
| 002   | 002   | abc   | def   |
| 001   | 002   | 001   | 002   |
| 001   | 002   | 001   | 002   |
| 002   | 001   | 001   | 002   |
| 002   | 002   | 001   | 002   |
| 001   | 002   | 001   | 001   |
| 001   | 002   | 001   | 001   |
| 002   | 001   | 001   | 001   |
| 002   | 002   | 001   | 001   |
+-------+-------+-------+-------+
16 rows in set (0.030 sec)

MariaDB [test024]> SELECT * FROM abc INNER JOIN def WHERE abc.name1 = def.name3;
+-------+-------+-------+-------+
| name1 | name2 | name3 | name4 |
+-------+-------+-------+-------+
| 001   | 002   | 001   | 002   |
| 001   | 002   | 001   | 002   |
| 001   | 002   | 001   | 001   |
| 001   | 002   | 001   | 001   |
+-------+-------+-------+-------+
4 rows in set (0.001 sec)

MariaDB [test024]> SELECT * FROM abc RIGHT JOIN def ON abc.name1 = def.name3;
+-------+-------+-------+-------+
| name1 | name2 | name3 | name4 |
+-------+-------+-------+-------+
| 001   | 002   | 001   | 002   |
| 001   | 002   | 001   | 001   |
| 001   | 002   | 001   | 002   |
| 001   | 002   | 001   | 001   |
| NULL  | NULL  | abc   | abc   |
| NULL  | NULL  | abc   | def   |
+-------+-------+-------+-------+
6 rows in set (0.028 sec)

MariaDB [test024]> QUIT
Bye
david@intel-compute-stick:~\$
024/output01.txt
001 002 abc abc<br>
001 002 abc abc<br>
002 001 abc abc<br>
002 002 abc abc<br>
001 002 abc def<br>
001 002 abc def<br>
002 001 abc def<br>
002 002 abc def<br>
001 002 001 002<br>
001 002 001 002<br>
002 001 001 002<br>
002 002 001 002<br>
001 002 001 001<br>
001 002 001 001<br>
002 001 001 001<br>
002 002 001 001<br>
001 002 002 002<br>
001 002 002 002<br>
002 001 002 002<br>
002 002 002 002<br>
001 002 002 002<br>
001 002 002 002<br>
002 001 002 002<br>
002 002 002 002<br>
001 002 002 002<br>
001 002 002 002<br>
002 001 002 002<br>
002 002 002 002<br>
001 002 002 002<br>
001 002 002 002<br>
002 001 002 002<br>
002 002 002 002<br>
001 002 001 002<br>
001 002 001 002<br>
001 002 001 001<br>
001 002 001 001<br>
002 001 002 002<br>
002 002 002 002<br>
002 001 002 002<br>
002 002 002 002<br>
002 001 002 002<br>
002 002 002 002<br>
002 001 002 002<br>
002 002 002 002<br>
024/output02.txt
<?php
session_start ();
?>

<form method="GET" action="./phptest.php">
<input type="password" name="password1"></input>
<input type="submit"></input>
</form>

<?php

echo session_id ();
setcookie ("Cookie24", "Inhalt", time () + 3600);
echo htmlentities (\$_COOKIE ["Cookie24"]);
echo htmlentities (\$_GET ["password1"]);

?>
024/phptest.php
<?php
include ('/home/david/mysqldata.php');

\$handle = mysql_connect ("127.0.0.1", \$MYSQL_NAME, \$MYSQL_PASSWORD);

mysql_select_db ("test025", \$handle);

mysql_query ("INSERT INTO def VALUES ("001", "002")", \$handle);

\$result = mysql_query ("SELECT * FROM abc JOIN def", \$handle);
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["name1"] . " " . \$row ["name2"] . " " . \$row ["name3"] . " " . \$row ["name4"] . "<br>n";


\$result = mysql_query ("SELECT * FROM abc INNER JOIN def WHERE abc.name1 = def.name3", \$handle);
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["name1"] . " " . \$row ["name2"] . " " . \$row ["name3"] . " " . \$row ["name4"] . "<br>n";
mysql_close (\$handle);
?>
025/database.php
001 001 001 001<br>
001 002 001 001<br>
002 001 001 001<br>
002 002 001 001<br>
001 001 002 002<br>
001 002 002 002<br>
002 001 002 002<br>
002 002 002 002<br>
001 001 def abc<br>
001 002 def abc<br>
002 001 def abc<br>
002 002 def abc<br>
001 001 001 002<br>
001 002 001 002<br>
002 001 001 002<br>
002 002 001 002<br>
001 001 001 002<br>
001 002 001 002<br>
002 001 001 002<br>
002 002 001 002<br>
001 001 001 001<br>
001 002 001 001<br>
002 001 002 002<br>
002 002 002 002<br>
001 001 001 002<br>
001 002 001 002<br>
001 001 001 002<br>
001 002 001 002<br>
025/output01.txt
david@intel-compute-stick:/var/www/html/025\$ telnet 127.0.0.1 80
Trying 127.0.0.1...
Connected to 127.0.0.1.
Escape character is '\^]'.
GET /025/phptest.php?password1=Hallo HTTP/1.1
host: localhost

HTTP/1.1 200 OK
Date: Mon, 18 Apr 2022 09:18:28 GMT
Server: Apache/2.4.52 (Debian)
Set-Cookie: PHPSESSID=4v08144r8a6k91obl25h7rqhn6; path=/
Expires: Thu, 19 Nov 1981 08:52:00 GMT
Cache-Control: no-store, no-cache, must-revalidate, post-check=0, pre-check=0
Pragma: no-cache
Set-Cookie: Cookie25=Inhalt; expires=Mon, 18-Apr-2022 10:18:32 GMT; Max-Age=3600
Vary: Accept-Encoding
Content-Length: 163
Content-Type: text/html; charset=UTF-8


<FORM METHOD="GET" ACTION="./phptest.php">
<INPUT TYPE="password" NAME="password1"></INPUT>
<INPUT TYPE="submit"></INPUT>
</FORM>

4v08144r8a6k91obl25h7rqhn6Hallo
025/output02.txt
<?php
session_start ();
?>

<FORM METHOD="GET" ACTION="./phptest.php">
<INPUT TYPE="password" NAME="password1"></INPUT>
<INPUT TYPE="submit"></INPUT>
</FORM>

<?php
echo session_id ();

setcookie ("Cookie25", "Inhalt", time () + 3600);

echo \$_COOKIE ["Cookie25"];

echo htmlentities (\$_GET ["password1"]);
?>
025/phptest.php
<?php
include ('/home/david/mysqldata.php');

\$handle = mysql_connect ("127.0.0.1", \$MYSQL_NAME, \$MYSQL_PASSWORD);

mysql_select_db ("test026", \$handle);

mysql_query ("INSERT INTO abc (name1, name2) VALUES ("abc", "def"", \$handle);

\$result = mysql_query ("SELECT * FROM abc JOIN def", \$handle);
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["name1"] . " " . \$row ["name2"] . " " . \$row ["name3"] . " " . \$row ["name4"] . "<br>n";

\$result = mysql_query ("SELECT * FROM abc INNER JOIN def WHERE abc.name1 = def.name3", \$handle);
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["name1"] . " " . \$row ["name2"] . " " . \$row ["name3"] . " " . \$row ["name4"] . "<br>n";

mysql_close (\$handle);
?>
026/database.php
david@intel-compute-stick:/var/www/html/025\$ mysql -u root -p
Enter password:
Welcome to the MariaDB monitor.  Commands end with ; or g.
Your MariaDB connection id is 1017
Server version: 10.5.12-MariaDB-0+deb11u1 Debian 11

Copyright (c) 2000, 2018, Oracle, MariaDB Corporation Ab and others.

Type 'help;' or 'h' for help. Type 'c' to clear the current input statement.

MariaDB [(none)]> CREATE DATABASE test025;
ERROR 1007 (HY000): Can't create database 'test025'; database exists
MariaDB [(none)]> CREATE DATABASE test026;
Query OK, 1 row affected (0.002 sec)

MariaDB [(none)]> USE test026;
Database changed
MariaDB [test026]> CREATE TABLE abc (name1 VARCHAR (32), name2 VARCHAR (32));
Query OK, 0 rows affected (0.065 sec)

MariaDB [test026]> CREATE TABLE def (name3 VARCHAR (32), name4 VARCHAR (32));
Query OK, 0 rows affected (0.055 sec)

MariaDB [test026]> INSERT INTO abc VALUES ("001", "002");
Query OK, 1 row affected (0.027 sec)

MariaDB [test026]> INSERT INTO abc VALUES ("001", "001");
Query OK, 1 row affected (0.026 sec)

MariaDB [test026]> INSERT INTO abc VALUES ("002", "001");
Query OK, 1 row affected (0.024 sec)

MariaDB [test026]> INSERT INTO abc (name2, name1) VALUES  ("002", "001"));
ERROR 1064 (42000): You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near ')' at line 1
MariaDB [test026]> INSERT INTO abc (name2, name1) VALUES  ("002", "001");
Query OK, 1 row affected (0.031 sec)

MariaDB [test026]> INSERT INTO def (name3, name4) VALUES ("001", "002");
Query OK, 1 row affected (0.029 sec)

MariaDB [test026]> INSERT INTO def (name4, name3) VALUES ("001", "002");
Query OK, 1 row affected (0.025 sec)

MariaDB [test026]> INSERT INTO def VALUES ("abc", "def");
Query OK, 1 row affected (0.032 sec)

MariaDB [test026]> SELECT * FROM abc JOIN def;
+-------+-------+-------+-------+
| name1 | name2 | name3 | name4 |
+-------+-------+-------+-------+
| 001   | 002   | 001   | 002   |
| 001   | 002   | 002   | 001   |
| 001   | 002   | abc   | def   |
| 001   | 001   | 001   | 002   |
| 001   | 001   | 002   | 001   |
| 001   | 001   | abc   | def   |
| 002   | 001   | 001   | 002   |
| 002   | 001   | 002   | 001   |
| 002   | 001   | abc   | def   |
| 001   | 002   | 001   | 002   |
| 001   | 002   | 002   | 001   |
| 001   | 002   | abc   | def   |
+-------+-------+-------+-------+
12 rows in set (0.001 sec)

MariaDB [test026]> SELECT * FROM abc;
+-------+-------+
| name1 | name2 |
+-------+-------+
| 001   | 002   |
| 001   | 001   |
| 002   | 001   |
| 001   | 002   |
+-------+-------+
4 rows in set (0.001 sec)

MariaDB [test026]> SELECT * FROM def;
+-------+-------+
| name3 | name4 |
+-------+-------+
| 001   | 002   |
| 002   | 001   |
| abc   | def   |
+-------+-------+
3 rows in set (0.001 sec)

MariaDB [test026]> SELECT * FROM abc INNER JOIN def WHERE abc.name1 = def.name3;
+-------+-------+-------+-------+
| name1 | name2 | name3 | name4 |
+-------+-------+-------+-------+
| 001   | 002   | 001   | 002   |
| 001   | 001   | 001   | 002   |
| 002   | 001   | 002   | 001   |
| 001   | 002   | 001   | 002   |
+-------+-------+-------+-------+
4 rows in set (0.001 sec)

MariaDB [test026]> SELECT * FROM abc LEFT JOIN def ON abc.name1 = def.name3;
+-------+-------+-------+-------+
| name1 | name2 | name3 | name4 |
+-------+-------+-------+-------+
| 001   | 002   | 001   | 002   |
| 001   | 001   | 001   | 002   |
| 001   | 002   | 001   | 002   |
| 002   | 001   | 002   | 001   |
+-------+-------+-------+-------+
4 rows in set (0.001 sec)

MariaDB [test026]> quit
Bye
david@intel-compute-stick:/var/www/html/025\$

026/output01.txt
001 002 001 002<br>
001 002 002 001<br>
001 002 abc def<br>
001 001 001 002<br>
001 001 002 001<br>
001 001 abc def<br>
002 001 001 002<br>
002 001 002 001<br>
002 001 abc def<br>
001 002 001 002<br>
001 002 002 001<br>
001 002 abc def<br>
001 002 001 002<br>
001 001 001 002<br>
002 001 002 001<br>
001 002 001 002<br>
026/output02.txt
david@intel-compute-stick:/var/www/html/026\$ telnet 127.0.0.1 80
Trying 127.0.0.1...
Connected to 127.0.0.1.
Escape character is '\^]'.
GET /026/phptest.php HTTP/1.1
host: localhost

HTTP/1.1 200 OK
Date: Tue, 19 Apr 2022 11:46:55 GMT
Server: Apache/2.4.52 (Debian)
Set-Cookie: PHPSESSID=hheljuojpm990g546d5v02l4m0; path=/
Expires: Thu, 19 Nov 1981 08:52:00 GMT
Cache-Control: no-store, no-cache, must-revalidate, post-check=0, pre-check=0
Pragma: no-cache
Set-Cookie: test26=Inhalt; expires=Tue, 19-Apr-2022 12:47:01 GMT; Max-Age=3600
Vary: Accept-Encoding
Content-Length: 158
Content-Type: text/html; charset=UTF-8


<form action="./phptest.php" method="GET">
<input type="password" name="password1"></input>
<input type="submit"></input>
</form>

hheljuojpm990g546d5v02l4m0Connection closed by foreign host.
david@intel-compute-stick:/var/www/html/026\$
026/output03.txt
<?php
session_start ();
?>

<form action="./phptest.php" method="GET">
<input type="password" name="password1"></input>
<input type="submit"></input>
</form>

<?php
echo session_id ();

setcookie ("test26", "Inhalt", time () + 3600);

echo htmlentities (\$_COOKIE ["test026"]);

echo htmlentities (\$_GET ["password1"]);
?>
026/phptest.php
<?php
include ('/home/david/mysqldata.php');

\$handle = mysql_connect ("127.0.0.1", \$MYSQL_NAME, \$MYSQL_PASSWORD);

mysql_select_db ("test027", \$handle);

mysql_query ("INSERT INTO abc VALUES ("abc", "def")", \$handle);

\$result = mysql_query ("SELECT * FROM abc INNER JOIN def WHERE abc.name1 = def.name3", \$handle);

while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["name1"] . " " . \$row ["name2"] . " " . \$row ["name3"] . " " . \$row ["name4"] . "<br>n";

\$result = mysql_query ("SELECT * FROM abc LEFT JOIN def ON abc.name1 = def.name3", \$handle);

while (\$row = mysql_fetch_row  (\$result))
    echo \$row [0] . " " . \$row [1] . " " . \$row [2] . " " . \$row [3] . "<br>n";
mysql_close (\$handle);
?>
027/database.php
GET /027/phptest.php?password1=HALLOPASSWORT HTTP/1.1
host: localhost
Cookie: Cookie28=SUPERSACHE
027/httprequest01.txt
POST /test.php HTTP/1.1
host: 192.168.178.21
Content-Length: 7
Content-Type: application/x-www-form-urlencoded

q=Hallo
027/httprequest02.txt
<?php
include ('/home/david/mysqldata.php');

\$handle = mysql_connect ("127.0.0.1", \$MYSQL_NAME, \$MYSQL_PASSWORD);

mysql_select_db ("menge001", \$handle);

for (\$i = 0;  \$i < 20;  \$i++) {
    mysql_query ("INSERT INTO a VALUES ("" . rand () % 14 . "")", \$handle);
    mysql_query ("INSERT INTO b VALUES ("" . rand () % 14 . "")", \$handle);
    mysql_query ("INSERT INTO c VALUES ("" . rand () % 14 . "")", \$handle);
}

mysql_close (\$handle);

?>
027/mysqlmenge.php
SELECT * FROM (SELECT * FROM a UNION SELECT * FROM b)x;

SELECT x FROM (SELECT x FROM a UNION SELECT x FROM b)x;
SELECT x FROM (SELECT x FROM a UNION SELECT x FROM c)x;
SELECT x FROM (SELECT x FROM b UNION SELECT x FROM c)x;

SELECT x FROM (SELECT x FROM a INTERSECT SELECT x FROM b)x;
SELECT x FROM (SELECT x FROM a INTERSECT SELECT x FROM c)x;
SELECT x FROM (SELECT x FROM b INTERSECT SELECT x FROM c)x;

(a OR b) AND c = a AND c OR b AND c
(a OR c) AND b = a AND b OR c AND b
(b OR c) AND a = b AND a OR c AND a

SELECT x FROM (
    SELECT x FROM c
    INTERSECT
    SELECT x FROM (SELECT x FROM a UNION SELECT x FROM b)x
)x ORDER BY x;

SELECT x FROM (
    SELECT x FROM (SELECT x FROM a INTERSECT SELECT x FROM c)x
    UNION
    SELECT x FROM (SELECT x FROM b INTERSECT SELECT x FROM c)x
)x ORDER BY x;


+------+
| x    |
+------+
| 0    |
| 10   |
| 12   |
| 13   |
| 2    |
| 3    |
| 4    |
| 5    |
| 7    |
| 8    |
+------+
10 rows in set (0.004 sec)


MariaDB [menge001]> SELECT x FROM (
    ->     SELECT x FROM (SELECT x FROM a INTERSECT SELECT x FROM c)x
    ->     UNION
    ->     SELECT x FROM (SELECT x FROM b INTERSECT SELECT x FROM c)x
    -> )x ORDER BY x;
+------+
| x    |
+------+
| 0    |
| 10   |
| 12   |
| 13   |
| 2    |
| 3    |
| 4    |
| 5    |
| 7    |
| 8    |
+------+
10 rows in set (0.004 sec)


(a OR c) AND b = a AND b OR c AND b

SELECT x FROM (
    SELECT x FROM b
    INTERSECT
    SELECT x FROM (SELECT x FROM a UNION SELECT x FROM c)x
)x ORDER BY x;

SELECT x FROM (
    SELECT x FROM (SELECT x FROM c INTERSECT SELECT x FROM b)x
    UNION
    SELECT x FROM (SELECT x FROM a INTERSECT SELECT x FROM b)x
)x ORDER BY x;


MariaDB [menge001]> SELECT x FROM (
    ->     SELECT x FROM (SELECT x FROM c INTERSECT SELECT x FROM b)x
    ->     UNION
    ->     SELECT x FROM (SELECT x FROM a INTERSECT SELECT x FROM b)x
    -> )x ORDER BY x;
+------+
| x    |
+------+
| 0    |
| 1    |
| 10   |
| 11   |
| 12   |
| 2    |
| 4    |
| 6    |
| 7    |
| 8    |
+------+
10 rows in set (0.005 sec)


MariaDB [menge001]> SELECT x FROM (
    ->     SELECT x FROM b
    ->     INTERSECT
    ->     SELECT x FROM (SELECT x FROM a UNION SELECT x FROM c)x
    -> )x ORDER BY x;
+------+
| x    |
+------+
| 0    |
| 1    |
| 10   |
| 11   |
| 12   |
| 2    |
| 4    |
| 6    |
| 7    |
| 8    |
+------+
10 rows in set (0.002 sec)


(b OR c) AND a = b AND a OR c AND a

SELECT x FROM (
    SELECT x FROM a
    INTERSECT
    SELECT x FROM (SELECT x FROM b UNION SELECT x FROM c)x
)x ORDER BY x;

SELECT x FROM (
    SELECT x FROM (SELECT x FROM b INTERSECT SELECT x FROM a)x
    UNION
    SELECT x FROM (SELECT x FROM c INTERSECT SELECT x FROM a)x
)x ORDER BY x;


MariaDB [menge001]> SELECT x FROM (
    ->     SELECT x FROM a
    ->     INTERSECT
    ->     SELECT x FROM (SELECT x FROM b UNION SELECT x FROM c)x
    -> )x ORDER BY x;
+------+
| x    |
+------+
| 0    |
| 1    |
| 10   |
| 11   |
| 12   |
| 13   |
| 2    |
| 3    |
| 4    |
| 5    |
| 6    |
| 7    |
| 8    |
+------+
13 rows in set (0.004 sec)

MariaDB [menge001]> SELECT x FROM (
    ->     SELECT x FROM (SELECT x FROM b INTERSECT SELECT x FROM a)x
    ->     UNION
    ->     SELECT x FROM (SELECT x FROM c INTERSECT SELECT x FROM a)x
    -> )x ORDER BY x;
+------+
| x    |
+------+
| 0    |
| 1    |
| 10   |
| 11   |
| 12   |
| 13   |
| 2    |
| 3    |
| 4    |
| 5    |
| 6    |
| 7    |
| 8    |
+------+
13 rows in set (0.005 sec)
027/mysqlmenge.txt
david@intel-compute-stick:~\$ mysql -u root -p
Enter password:
Welcome to the MariaDB monitor.  Commands end with ; or g.
Your MariaDB connection id is 1198
Server version: 10.5.12-MariaDB-0+deb11u1 Debian 11

Copyright (c) 2000, 2018, Oracle, MariaDB Corporation Ab and others.

Type 'help;' or 'h' for help. Type 'c' to clear the current input statement.

MariaDB [(none)]> CREATE DATABASE test027;
Query OK, 1 row affected (0.033 sec)

MariaDB [(none)]> USE test027
Database changed
MariaDB [test027]> CREATE TABLE abc (name1 VARCHAR (32), name2 VARCHAR (32));
Query OK, 0 rows affected (0.074 sec)

MariaDB [test027]> CREATE TABLE def (name3 VARCHAR (32), name4 VARCHAR (32));
Query OK, 0 rows affected (0.066 sec)

MariaDB [test027]> INSERT INTO abc VALUES ("001", "001");
Query OK, 1 row affected (0.041 sec)

MariaDB [test027]> INSERT INTO abc (name2, name1) VALUES ("001", "002");
Query OK, 1 row affected (0.031 sec)

MariaDB [test027]> INSERT INTO abc (name1, name2) VALUES ("001", "002");
Query OK, 1 row affected (0.032 sec)

MariaDB [test027]> INSERT INTO abc VALUES ("002", "002");
Query OK, 1 row affected (0.027 sec)

MariaDB [test027]> INSERT INTO def VALUES ("001", "001");
Query OK, 1 row affected (0.030 sec)

MariaDB [test027]> INSERT INTO def VALUES ("001", "002");
Query OK, 1 row affected (0.030 sec)

MariaDB [test027]> INSERT INTO def VALUES ("abc", "def");
Query OK, 1 row affected (0.027 sec)

MariaDB [test027]> SELECT * FROM abc;
+-------+-------+
| name1 | name2 |
+-------+-------+
| 001   | 001   |
| 002   | 001   |
| 001   | 002   |
| 002   | 002   |
+-------+-------+
4 rows in set (0.001 sec)

MariaDB [test027]> SELECT * FROM def;
+-------+-------+
| name3 | name4 |
+-------+-------+
| 001   | 001   |
| 001   | 002   |
| abc   | def   |
+-------+-------+
3 rows in set (0.001 sec)

MariaDB [test027]> SELECT * FROM abc JOIN def;
+-------+-------+-------+-------+
| name1 | name2 | name3 | name4 |
+-------+-------+-------+-------+
| 001   | 001   | 001   | 001   |
| 001   | 001   | 001   | 002   |
| 001   | 001   | abc   | def   |
| 002   | 001   | 001   | 001   |
| 002   | 001   | 001   | 002   |
| 002   | 001   | abc   | def   |
| 001   | 002   | 001   | 001   |
| 001   | 002   | 001   | 002   |
| 001   | 002   | abc   | def   |
| 002   | 002   | 001   | 001   |
| 002   | 002   | 001   | 002   |
| 002   | 002   | abc   | def   |
+-------+-------+-------+-------+
12 rows in set (0.001 sec)

MariaDB [test027]> SELECT * FROM abc INNER JOIN def WHERE abc.name1 = def.name3;
+-------+-------+-------+-------+
| name1 | name2 | name3 | name4 |
+-------+-------+-------+-------+
| 001   | 001   | 001   | 001   |
| 001   | 001   | 001   | 002   |
| 001   | 002   | 001   | 001   |
| 001   | 002   | 001   | 002   |
+-------+-------+-------+-------+
4 rows in set (0.001 sec)

MariaDB [test027]> SELECT * FROM abc LEFT JOIN def ON abc.name1 = def.name3;
+-------+-------+-------+-------+
| name1 | name2 | name3 | name4 |
+-------+-------+-------+-------+
| 001   | 001   | 001   | 001   |
| 001   | 002   | 001   | 001   |
| 001   | 001   | 001   | 002   |
| 001   | 002   | 001   | 002   |
| 002   | 001   | NULL  | NULL  |
| 002   | 002   | NULL  | NULL  |
+-------+-------+-------+-------+
6 rows in set (0.002 sec)

MariaDB [test027]> QUIT
Bye
david@intel-compute-stick:~\$

027/output01.txt
001 001 001 001<br>
001 001 001 002<br>
001 002 001 001<br>
001 002 001 002<br>
abc def abc def<br>
abc def abc def<br>
abc def abc def<br>
001 001 001 001<br>
001 002 001 001<br>
001 001 001 002<br>
001 002 001 002<br>
abc def abc def<br>
abc def abc def<br>
abc def abc def<br>
002 001  <br>
002 002  <br>
027/output02.txt
david@intel-compute-stick:/var/www/html/027\$ telnet 127.0.0.1 80
Trying 127.0.0.1...
Connected to 127.0.0.1.
Escape character is '\^]'.
GET /027/phptest.php?password1=HALLOPASSWORT HTTP/1.1
host: localhost
Cookie: Cookie28=SUPERSACHE

HTTP/1.1 200 OK
Date: Wed, 20 Apr 2022 11:46:40 GMT
Server: Apache/2.4.52 (Debian)
Set-Cookie: PHPSESSID=7o853kolrvl3rtsd3ssdtlmu56; path=/
Expires: Thu, 19 Nov 1981 08:52:00 GMT
Cache-Control: no-store, no-cache, must-revalidate, post-check=0, pre-check=0
Pragma: no-cache
Set-Cookie: Cookie27=Inhalt; expires=Wed, 20-Apr-2022 12:46:41 GMT; Max-Age=3600
Vary: Accept-Encoding
Content-Length: 181
Content-Type: text/html; charset=UTF-8


<FORM METHOD="GET" ACTION="./phptest.php">
<INPUT TYPE="password" NAME="password1"></INPUT>
<INPUT TYPE="submit"></INPUT>
</FORM>

7o853kolrvl3rtsd3ssdtlmu56SUPERSACHEHALLOPASSWORTConnection closed by foreign host.
david@intel-compute-stick:/var/www/html/027\$

027/output03.txt
<?php
session_start ();
?>

<FORM METHOD="GET" ACTION="./phptest.php">
<INPUT TYPE="password" NAME="password1"></INPUT>
<INPUT TYPE="submit"></INPUT>
</FORM>

<?php

echo session_id ();

setcookie ("Cookie27", "Inhalt", time () + 3600);

echo htmlentities (\$_COOKIE ["Cookie27"]);
echo htmlentities (\$_COOKIE ["Cookie28"]);

echo htmlentities (\$_GET ["password1"]);
?>
027/phptest.php
<?php
include ('/home/david/mysqldata.php');

\$handle = mysql_connect ("127.0.0.1", \$MYSQL_NAME, \$MYSQL_PASSWORD);

mysql_select_db ("test028", \$handle);

mysql_query ("INSERT INTO def VALUES ("002", "002"", \$handle);

\$result = mysql_query ("SELECT * FROM abc INNER JOIN def WHERE abc.name1 = def.name3", \$handle);
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["name1"] . " " . \$row ["name2"] . " " . \$row ["name3"] . " " . \$row ["name4"] . "<br>n";

\$result = mysql_query ("SELECT * FROM abc LEFT JOIN def ON abc.name2 = def.name4", \$handle);
while (\$row = mysql_fetch_row (\$result))
    echo \$row [0] . " " . \$row [1] . " " . \$row [2] . " " . \$row [3] . "<br>n";
mysql_close (\$handle);
?>
028/database.php
<?php
session_start ();
?>

<FORM METHOD="GET" ACTION="./form1.php">
<INPUT TYPE="password" NAME="password1"></INPUT>
<INPUT TYPE="submit"></INPUT>
</FORM>

<?php
echo session_id ();
echo htmlentities (\$_GET ["password1"]);

setcookie ("Cookie28", "Inhalt", time () + 3600);

echo htmlentities (\$_COOKIE ["Cookie28"]);
echo htmlentities (\$_COOKIE ["Cookie28a"]);
?>
028/form1.php
GET /028/form1.php?password1=MyPASSWORD HTTP/1.1
host: localhost
Cookie: Cookie28a=SuperCOOKIE
028/httprequest01.txt
<?php
include ('/home/david/mysqldata.php');

\$handle = mysql_connect ("127.0.0.1", \$MYSQL_NAME, \$MYSQL_PASSWORD);

mysql_select_db ("menge002", \$handle);

for (\$i = 0;  \$i < 20;  \$i++) {
    mysql_query ("INSERT INTO a VALUES ("". rand () % 14 ."")", \$handle);
    mysql_query ("INSERT INTO b VALUES ("". rand () % 14 ."")", \$handle);
    mysql_query ("INSERT INTO c VALUES ("". rand () % 14 ."")", \$handle);
}
mysql_close (\$handle);
?>
028/mengedatabase.php
SELECT x FROM (SELECT x FROM a UNION SELECT x FROM b)x ORDER BY x;
SELECT x FROM (SELECT x FROM a UNION SELECT x FROM c)x ORDER BY x;
SELECT x FROM (SELECT x FROM b UNION SELECT x FROM c)x ORDER BY x;

SELECT x FROM (SELECT x FROM a INTERSECT SELECT x FROM b)x ORDER BY x;
SELECT x FROM (SELECT x FROM a INTERSECT SELECT x FROM c)x ORDER BY x;
SELECT x FROM (SELECT x FROM b INTERSECT SELECT x FROM c)x ORDER BY x;

(a or b) and c = a and c or b and c
(a or c) and b = a and b or c and b
(b or c) and a = b and a or c and a

(a or b) and c = a and c or b and c

SELECT x FROM (
    SELECT x FROM c
    INTERSECT
    SELECT x FROM (SELECT x FROM a UNION SELECT x FROM b)x
)x ORDER BY x;

SELECT x FROM (
    SELECT x FROM (SELECT x FROM a INTERSECT SELECT x FROM c)x
    UNION
    SELECT x FROM (SELECT x FROM b INTERSECT SELECT x FROM c)x
)x ORDER BY x;

(a or c) and b = a and b or c and b

SELECT x FROM (
    SELECT x FROM b
    INTERSECT
    SELECT x FROM (SELECT x FROM a UNION SELECT x FROM c)x
)x ORDER BY x;

SELECT x FROM (
    SELECT x FROM (SELECT x FROM a INTERSECT SELECT x FROM b)x
    UNION
    SELECT x FROM (SELECT x FROM c INTERSECT SELECT x FROM b)x
)x ORDER BY x;

(b or c) and a = b and a or c and a

SELECT x FROM (
    SELECT x FROM (SELECT x FROM b UNION SELECT x FROM c)x
    INTERSECT
    SELECT x FROM a
)x ORDER BY x;

SELECT x FROM (
    SELECT x FROM (SELECT x FROM b INTERSECT SELECT x FROM a)x
    UNION
    SELECT x FROM (SELECT x FROM c INTERSECT SELECT x FROM a)x
)x ORDER BY x;
028/mengendatabase.txt
david@intel-compute-stick:~\$ mysql -u root -p
Enter password:
Welcome to the MariaDB monitor.  Commands end with ; or g.
Your MariaDB connection id is 1296
Server version: 10.5.12-MariaDB-0+deb11u1 Debian 11

Copyright (c) 2000, 2018, Oracle, MariaDB Corporation Ab and others.

Type 'help;' or 'h' for help. Type 'c' to clear the current input statement.

MariaDB [(none)]> CREATE DATABASE test028;
Query OK, 1 row affected (0.002 sec)

MariaDB [(none)]> USE test028;
Database changed
MariaDB [test028]> CREATE TABLE abc (name1 VARCHAR (32), name2 VARCHAR (32));
Query OK, 0 rows affected (0.080 sec)

MariaDB [test028]> CREATE TABLE def (name3 VARCHAR (32), name4 VARCHAR (32));
Query OK, 0 rows affected (0.066 sec)

MariaDB [test028]> INSERT INTO abc VALUES ("001", "001");
Query OK, 1 row affected (0.038 sec)

MariaDB [test028]> INSERT INTO abc (name2, name1) VALUES ("001", "002");
Query OK, 1 row affected (0.031 sec)

MariaDB [test028]> INSERT INTO abc VALUES ("001", "002");
Query OK, 1 row affected (0.031 sec)

MariaDB [test028]> INSERT INTO abc (name2, name1) VALUES ("002", "002");
Query OK, 1 row affected (0.025 sec)

MariaDB [test028]> INSERT INTO def VALUES ("001", "001");
Query OK, 1 row affected (0.030 sec)

MariaDB [test028]> INSERT INTO def VALUES ("001", "002");
Query OK, 1 row affected (0.027 sec)

MariaDB [test028]> INSERT INTO def VALUES ("abc", "def");
Query OK, 1 row affected (0.025 sec)

MariaDB [test028]> SELECT * FROM abc;
+-------+-------+
| name1 | name2 |
+-------+-------+
| 001   | 001   |
| 002   | 001   |
| 001   | 002   |
| 002   | 002   |
+-------+-------+
4 rows in set (0.001 sec)

MariaDB [test028]> SELECT * FROM def;
+-------+-------+
| name3 | name4 |
+-------+-------+
| 001   | 001   |
| 001   | 002   |
| abc   | def   |
+-------+-------+
3 rows in set (0.001 sec)

MariaDB [test028]> SELECT * FROM abc JOIN def;M
+-------+-------+-------+-------+
| name1 | name2 | name3 | name4 |
+-------+-------+-------+-------+
| 001   | 001   | 001   | 001   |
| 001   | 001   | 001   | 002   |
| 001   | 001   | abc   | def   |
| 002   | 001   | 001   | 001   |
| 002   | 001   | 001   | 002   |
| 002   | 001   | abc   | def   |
| 001   | 002   | 001   | 001   |
| 001   | 002   | 001   | 002   |
| 001   | 002   | abc   | def   |
| 002   | 002   | 001   | 001   |
| 002   | 002   | 001   | 002   |
| 002   | 002   | abc   | def   |
+-------+-------+-------+-------+
12 rows in set (0.001 sec)

    -> ;
ERROR 1064 (42000): You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near 'M' at line 1
MariaDB [test028]> SELECT * FROM abc INNER JOIN def WHERE abc.name1 = def.name3;
+-------+-------+-------+-------+
| name1 | name2 | name3 | name4 |
+-------+-------+-------+-------+
| 001   | 001   | 001   | 001   |
| 001   | 001   | 001   | 002   |
| 001   | 002   | 001   | 001   |
| 001   | 002   | 001   | 002   |
+-------+-------+-------+-------+
4 rows in set (0.002 sec)

MariaDB [test028]> SELECT * FROM abc RIGHT JOIN def ON abc.name1 = def.name3;
+-------+-------+-------+-------+
| name1 | name2 | name3 | name4 |
+-------+-------+-------+-------+
| 001   | 001   | 001   | 001   |
| 001   | 001   | 001   | 002   |
| 001   | 002   | 001   | 001   |
| 001   | 002   | 001   | 002   |
| NULL  | NULL  | abc   | def   |
+-------+-------+-------+-------+
5 rows in set (0.002 sec)

MariaDB [test028]> QUIT
Bye
david@intel-compute-stick:~\$

028/output01.txt
001 001 001 001<br>
001 001 001 002<br>
001 002 001 001<br>
001 002 001 002<br>
001 001 001 001<br>
002 001 001 001<br>
001 002 001 002<br>
002 002 001 002<br>
028/output02.txt
david@intel-compute-stick:/var/www/html/028\$ telnet 127.0.0.1 80
Trying 127.0.0.1...
Connected to 127.0.0.1.
Escape character is '\^]'.
GET /028/form1.php?password1=MyPASSWORD HTTP/1.1
host: localhost
Cookie: Cookie28a=SuperCOOKIE

HTTP/1.1 200 OK
Date: Wed, 20 Apr 2022 21:46:21 GMT
Server: Apache/2.4.52 (Debian)
Set-Cookie: PHPSESSID=0tj4aafabrevn5bd5dgc4u4cs0; path=/
Expires: Thu, 19 Nov 1981 08:52:00 GMT
Cache-Control: no-store, no-cache, must-revalidate, post-check=0, pre-check=0
Pragma: no-cache
Set-Cookie: Cookie28=Inhalt; expires=Wed, 20-Apr-2022 22:46:23 GMT; Max-Age=3600
Vary: Accept-Encoding
Content-Length: 177
Content-Type: text/html; charset=UTF-8


<FORM METHOD="GET" ACTION="./form1.php">
<INPUT TYPE="password" NAME="password1"></INPUT>
<INPUT TYPE="submit"></INPUT>
</FORM>

0tj4aafabrevn5bd5dgc4u4cs0MyPASSWORDSuperCOOKIEConnection closed by foreign host.
david@intel-compute-stick:/var/www/html/028\$
028/output03.txt
david@intel-compute-stick:/var/www/html/028\$ mysql -u root -p
Enter password:
Welcome to the MariaDB monitor.  Commands end with ; or g.
Your MariaDB connection id is 1299
Server version: 10.5.12-MariaDB-0+deb11u1 Debian 11

Copyright (c) 2000, 2018, Oracle, MariaDB Corporation Ab and others.

Type 'help;' or 'h' for help. Type 'c' to clear the current input statement.

MariaDB [(none)]> CREATE TABLE menge002;
ERROR 1046 (3D000): No database selected
MariaDB [(none)]> CREATE DATABSE menge002;
ERROR 1064 (42000): You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near 'DATABSE menge002' at line 1
MariaDB [(none)]> CREATE DATABASE menge002;
Query OK, 1 row affected (0.001 sec)

MariaDB [(none)]> USE menge002;
Database changed
MariaDB [menge002]> CREATE TABLE a (x VARCHAR (4));
Query OK, 0 rows affected (0.055 sec)

MariaDB [menge002]> CREATE TABLE b (x VARCHAR (4));
Query OK, 0 rows affected (0.058 sec)

MariaDB [menge002]> CREATE TABLE c (x VARCHAR (4));
Query OK, 0 rows affected (0.067 sec)

MariaDB [menge002]> SELECT * FROM a;
+------+
| x    |
+------+
| 5    |
| 9    |
| 2    |
| 7    |
| 12   |
| 11   |
| 0    |
| 5    |
| 7    |
| 10   |
| 8    |
| 11   |
| 1    |
| 6    |
| 5    |
| 0    |
| 13   |
| 6    |
| 12   |
| 8    |
+------+
20 rows in set (0.001 sec)

MariaDB [menge002]> SELECT x FROM (SELECT x FROM a UNION SELECT x FROM b)x ORDER BY x;
+------+
| x    |
+------+
| 0    |
| 1    |
| 10   |
| 11   |
| 12   |
| 13   |
| 2    |
| 3    |
| 4    |
| 5    |
| 6    |
| 7    |
| 8    |
| 9    |
+------+
14 rows in set (0.003 sec)

MariaDB [menge002]> SELECT x FROM (SELECT x FROM a UNION SELECT x FROM c)x ORDER BY x;
+------+
| x    |
+------+
| 0    |
| 1    |
| 10   |
| 11   |
| 12   |
| 13   |
| 2    |
| 3    |
| 5    |
| 6    |
| 7    |
| 8    |
| 9    |
+------+
13 rows in set (0.003 sec)

MariaDB [menge002]> SELECT x FROM (SELECT x FROM b UNION SELECT x FROM c)x ORDER BY x;
+------+
| x    |
+------+
| 0    |
| 1    |
| 10   |
| 12   |
| 13   |
| 2    |
| 3    |
| 4    |
| 5    |
| 6    |
| 7    |
| 8    |
| 9    |
+------+
13 rows in set (0.003 sec)

MariaDB [menge002]> SELECT x FROM (SELECT x FROM a INTERSECT SELECT x FROM b)x ORDER BY x;
+------+
| x    |
+------+
| 0    |
| 10   |
| 12   |
| 13   |
| 2    |
| 5    |
| 6    |
| 9    |
+------+
8 rows in set (0.003 sec)

MariaDB [menge002]> SELECT x FROM (SELECT x FROM a INTERSECT SELECT x FROM c)x ORDER BY x;
+------+
| x    |
+------+
| 1    |
| 10   |
| 12   |
| 13   |
| 2    |
| 5    |
| 6    |
| 7    |
| 8    |
| 9    |
+------+
10 rows in set (0.003 sec)

MariaDB [menge002]> SELECT x FROM (SELECT x FROM b INTERSECT SELECT x FROM c)x ORDER BY x;
+------+
| x    |
+------+
| 10   |
| 12   |
| 13   |
| 2    |
| 3    |
| 5    |
| 6    |
| 9    |
+------+
8 rows in set (0.003 sec)

MariaDB [menge002]> SELECT x FROM (
    ->     SELECT x FROM c
    ->     INTERSECT
    ->     SELECT x FROM (SELECT x FROM a UNION SELECT x FROM b)x
    -> )x ORDER BY x;
+------+
| x    |
+------+
| 1    |
| 10   |
| 12   |
| 13   |
| 2    |
| 3    |
| 5    |
| 6    |
| 7    |
| 8    |
| 9    |
+------+
11 rows in set (0.004 sec)

MariaDB [menge002]> SELECT x FROM (
    ->     SELECT x FROM (SELECT x FROM a INTERSECT SELECT x FROM c)x
    ->     UNION
    ->     SELECT x FROM (SELECT x FROM b INTERSECT SELECT x FROM c)x
    -> )x ORDER BY x;
+------+
| x    |
+------+
| 1    |
| 10   |
| 12   |
| 13   |
| 2    |
| 3    |
| 5    |
| 6    |
| 7    |
| 8    |
| 9    |
+------+
11 rows in set (0.005 sec)

MariaDB [menge002]> SELECT x FROM (
    ->     SELECT x FROM b
    ->     INTERSECT
    ->     SELECT x FROM (SELECT x FROM a UNION SELECT x FROM c)x
    -> )x ORDER BY x;
+------+
| x    |
+------+
| 0    |
| 10   |
| 12   |
| 13   |
| 2    |
| 3    |
| 5    |
| 6    |
| 9    |
+------+
9 rows in set (0.004 sec)

MariaDB [menge002]> SELECT x FROM (
    ->     SELECT x FROM (SELECT x FROM a INTERSECT SELECT x FROM b)x
    ->     UNION
    ->     SELECT x FROM (SELECT x FROM c INTERSECT SELECT x FROM b)x
    -> )x ORDER BY x;
+------+
| x    |
+------+
| 0    |
| 10   |
| 12   |
| 13   |
| 2    |
| 3    |
| 5    |
| 6    |
| 9    |
+------+
9 rows in set (0.005 sec)

MariaDB [menge002]> SELECT x FROM (
    ->     SELECT x FROM (SELECT x FROM b UNION SELECT x FROM c)x
    ->     INTERSECT
    ->     SELECT x FROM a
    -> )x ORDER BY x;
+------+
| x    |
+------+
| 0    |
| 1    |
| 10   |
| 12   |
| 13   |
| 2    |
| 5    |
| 6    |
| 7    |
| 8    |
| 9    |
+------+
11 rows in set (0.004 sec)

MariaDB [menge002]> SELECT x FROM (
    ->     SELECT x FROM (SELECT x FROM b INTERSECT SELECT x FROM a)x
    ->     UNION
    ->     SELECT x FROM (SELECT x FROM c INTERSECT SELECT x FROM a)x
    -> )x ORDER BY x;
+------+
| x    |
+------+
| 0    |
| 1    |
| 10   |
| 12   |
| 13   |
| 2    |
| 5    |
| 6    |
| 7    |
| 8    |
| 9    |
+------+
11 rows in set (0.005 sec)

MariaDB [menge002]>

028/output04.txt
a and b
a and c
b and c

a or b
a or c
b or c

(a or b) and c = a and c or b and c
(a or c) and b = a and b or c and b
(b or c) and a = a and b or c and a

SELECT x FROM (SELECT x FROM a INTERSECT SELECT x FROM b)x ORDER BY x;
SELECT x FROM (SELECT x FROM a INTERSECT SELECT x FROM c)x ORDER BY x;
SELECT x FROM (SELECT x FROM b INTERSECT SELECT x FROM c)x ORDER BY x;

SELECT x FROM (SELECT x FROM a UNION SELECT x FROM b)x ORDER BY x;
SELECT x FROM (SELECT x FROM a UNION SELECT x FROM c)x ORDER BY x;
SELECT x FROM (SELECT x FROM b UNION SELECT x FROM c)x ORDER BY x;

SELECT x FROM (
    SELECT x FROM (SELECT x FROM a UNION SELECT x FROM b)x
    INTERSECT
    SELECT x FROM c
)x ORDER BY x;

SELECT x FROM (
    SELECT x FROM (SELECT x FROM a INTERSECT SELECT x FROM c)x
    UNION
    SELECT x FROM (SELECT x FROM b INTERSECT SELECT x FROM c)x
)x ORDER BY x;

SELECT x FROM (
    SELECT x FROM (SELECT x FROM a UNION SELECT x FROM c)x
    INTERSECT
    SELECT x FROM b
)x ORDER BY x;

SELECT x FROM (
    SELECT x FROM (SELECT x FROM a INTERSECT SELECT x FROM b)x
    UNION
    SELECT x FROM (SELECT x FROM c INTERSECT SELECT x FROm b)x
)x ORDER BY x;

SELECT x FROM (
    SELECT x FROM (SELECT x FROM b UNION SELECT x FROM c)x
    INTERSECT
    SELECT x FROM a
)x ORDER BY x;

SELECT x FROM (
    SELECT x FROM (SELECT x FROM b INTERSECT SELECT x FROM a)x
    UNION
    SELECT x FROM (SELECT x FROM c INTERSECT SELECT x FROM a)x
)x ORDER BY x;
030/databasemenge.txt
<?php
include ('/home/david/mysqldata.php');

\$handle = mysql_connect ("127.0.0.1", \$MYSQL_NAME, \$MYSQL_PASSWORD);

mysql_select_db ("test030", \$handle);

mysql_query ("INSERT INTO abc (name1, name2) VALUES ("abc", "def")", \$handle);

\$result = mysql_query ("SELECT * FROM abc JOIN def", \$handle);
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["name1"] . " " . \$row ["name2"] . " " . \$row ["name3"] . " " . \$row ["name4"] . "<br>n";

\$result = mysql_query ("SELECT * FROM abc LEFT JOIN def ON abc.name2 = def.name4", \$handle);
while (\$row = mysql_fetch_row (\$result))
    echo \$row [0] . " " . \$row [1] . " " . \$row [2] . " " . \$row [3] . "<br>n";
mysql_close (\$handle);
?>
030/database.php
<?php
session_start ();
?>

<FORM ACTION="./form1.php" METHOD="GET">
<INPUT TYPE="password" NAME="password1"></INPUT>
<INPUT TYPE="submit"></INPUT>
</FORM>

<?php
echo "Session-ID: " . session_id () . "<br>nn";

echo "Passwort-1: " . htmlentities (\$_GET ["password1"]) . "<br>nn";

setcookie ("Cookie30", "Dies ist ein Cookie", time () + 3600);

echo "Cookie 30: " . htmlentities (\$_COOKIE ["Cookie30"]) . "<br>nn";

echo "Cookie 30a: " .htmlentities (\$_COOKIE ["Cookie30a"]) . "<br>nn";

session_destroy ();
?>
030/form1.php
GET /030/form1.php?password1=Hallo HTTP/1.1
host: localhost
Cookie: Cookie30a=Dies ist auch ein Cookie
030/httprequest01.txt
<?php
include ('/home/david/mysqldata.php');

\$handle = mysql_connect ("127.0.0.1", \$MYSQL_NAME, \$MYSQL_PASSWORD);

mysql_select_db ("menge003", \$handle);

for (\$i = 0;   \$i < 20;   \$i++) {
    mysql_query ("INSERT INTO a VALUES ("" . rand () % 15 . "")", \$handle);
    mysql_query ("INSERT INTO b VALUES ("" . rand () % 15 . "")", \$handle);
    mysql_query ("INSERT INTO c VALUES ("" . rand () % 15 . "")", \$handle);
}
mysql_close (\$handle);
?>
030/mengedatabase.php
david@intel-compute-stick:~\$ mysql -u root -p
Enter password:
ERROR 1698 (28000): Access denied for user 'root'@'localhost'
david@intel-compute-stick:~\$ mysql -u root -p
Enter password:
Welcome to the MariaDB monitor.  Commands end with ; or g.
Your MariaDB connection id is 1484
Server version: 10.5.12-MariaDB-0+deb11u1 Debian 11

Copyright (c) 2000, 2018, Oracle, MariaDB Corporation Ab and others.

Type 'help;' or 'h' for help. Type 'c' to clear the current input statement.

MariaDB [(none)]> CREATE DATABASE 030;
ERROR 1064 (42000): You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near '030' at line 1
MariaDB [(none)]> CREATE DATABASE test030;
Query OK, 1 row affected (0.001 sec)

MariaDB [(none)]> USE test030;
Database changed
MariaDB [test030]> CREATE TABLE abc (name1 VARCHAR (32), name2 VARCHAR (32));
Query OK, 0 rows affected (0.062 sec)

MariaDB [test030]> CREATE TABLE def (name3 VARCHAR (32), name4 VARCHAR (32));
Query OK, 0 rows affected (0.054 sec)

MariaDB [test030]> INSERT INTO abc VALUES ("001", "001");
Query OK, 1 row affected (0.029 sec)

MariaDB [test030]> INSERT INTO abc VALUES ("001", "002");
Query OK, 1 row affected (0.028 sec)

MariaDB [test030]> INSERT INTO abc (name2, name1) VALUES ("001", "002");
Query OK, 1 row affected (0.031 sec)

MariaDB [test030]> INSERT INTO abc (name1, name2) VALUES ("002", "002");
Query OK, 1 row affected (0.025 sec)

MariaDB [test030]> INSERT INTO def (name1, name2) VALUES ("001", "001");
ERROR 1054 (42S22): Unknown column 'name1' in 'field list'
MariaDB [test030]> INSERT INTO def (name3, name4) VALUES ("001", "001");
Query OK, 1 row affected (0.027 sec)

MariaDB [test030]> INSERT INTO def (name3, name4) VALUES ("001", "002");
Query OK, 1 row affected (0.032 sec)

MariaDB [test030]> INSERT INTO def (name4, name3) VALUES ("def", "abc");
Query OK, 1 row affected (0.025 sec)

MariaDB [test030]> SELECT * FROM abc;
+-------+-------+
| name1 | name2 |
+-------+-------+
| 001   | 001   |
| 001   | 002   |
| 002   | 001   |
| 002   | 002   |
+-------+-------+
4 rows in set (0.001 sec)

MariaDB [test030]> SELECT * FROM def;
+-------+-------+
| name3 | name4 |
+-------+-------+
| 001   | 001   |
| 001   | 002   |
| abc   | def   |
+-------+-------+
3 rows in set (0.001 sec)

MariaDB [test030]> SELECT * FROM abc JOIN def;
+-------+-------+-------+-------+
| name1 | name2 | name3 | name4 |
+-------+-------+-------+-------+
| 001   | 001   | 001   | 001   |
| 001   | 001   | 001   | 002   |
| 001   | 001   | abc   | def   |
| 001   | 002   | 001   | 001   |
| 001   | 002   | 001   | 002   |
| 001   | 002   | abc   | def   |
| 002   | 001   | 001   | 001   |
| 002   | 001   | 001   | 002   |
| 002   | 001   | abc   | def   |
| 002   | 002   | 001   | 001   |
| 002   | 002   | 001   | 002   |
| 002   | 002   | abc   | def   |
+-------+-------+-------+-------+
12 rows in set (0.001 sec)

MariaDB [test030]> SELECT * FROM abc INNER JOIN def WHERE abc.name1 = def.name3;
+-------+-------+-------+-------+
| name1 | name2 | name3 | name4 |
+-------+-------+-------+-------+
| 001   | 001   | 001   | 001   |
| 001   | 001   | 001   | 002   |
| 001   | 002   | 001   | 001   |
| 001   | 002   | 001   | 002   |
+-------+-------+-------+-------+
4 rows in set (0.002 sec)

MariaDB [test030]> SELECT * FROM abc LEFT JOIN def ON abc.name2 = def.name4;
+-------+-------+-------+-------+
| name1 | name2 | name3 | name4 |
+-------+-------+-------+-------+
| 001   | 001   | 001   | 001   |
| 002   | 001   | 001   | 001   |
| 001   | 002   | 001   | 002   |
| 002   | 002   | 001   | 002   |
+-------+-------+-------+-------+
4 rows in set (0.002 sec)

MariaDB [test030]> QUIT
Bye
david@intel-compute-stick:~\$

030/output01.txt
001 001 001 001<br>
001 001 001 002<br>
001 001 abc def<br>
001 002 001 001<br>
001 002 001 002<br>
001 002 abc def<br>
002 001 001 001<br>
002 001 001 002<br>
002 001 abc def<br>
002 002 001 001<br>
002 002 001 002<br>
002 002 abc def<br>
abc def 001 001<br>
abc def 001 002<br>
abc def abc def<br>
abc def 001 001<br>
abc def 001 002<br>
abc def abc def<br>
001 001 001 001<br>
002 001 001 001<br>
001 002 001 002<br>
002 002 001 002<br>
abc def abc def<br>
abc def abc def<br>
030/output02.txt
david@intel-compute-stick:/var/www/html/030\$ telnet 127.0.0.1 80
Trying 127.0.0.1...
Connected to 127.0.0.1.
Escape character is '\^]'.
GET /030/form1.php?password1=Hallo HTTP/1.1
host: localhost
Cookie: Cookie30a=Dies ist auch ein Cookie

HTTP/1.1 200 OK
Date: Fri, 22 Apr 2022 12:07:52 GMT
Server: Apache/2.4.52 (Debian)
Set-Cookie: PHPSESSID=blaboc9cs3r2t3sto4ivjefun2; path=/
Expires: Thu, 19 Nov 1981 08:52:00 GMT
Cache-Control: no-store, no-cache, must-revalidate, post-check=0, pre-check=0
Pragma: no-cache
Set-Cookie: Cookie30=Dies+ist+ein+Cookie; expires=Fri, 22-Apr-2022 13:07:54 GMT; Max-Age=3600
Vary: Accept-Encoding
Content-Length: 256
Content-Type: text/html; charset=UTF-8


<FORM ACTION="./form1.php" METHOD="GET">
<INPUT TYPE="password" NAME="password1"></INPUT>
<INPUT TYPE="submit"></INPUT>
</FORM>

Session-ID: blaboc9cs3r2t3sto4ivjefun2<br>

Passwort-1: Hallo<br>

Cookie 30: <br>

Cookie 30a: Dies ist auch ein Cookie<br>

Connection closed by foreign host.
david@intel-compute-stick:/var/www/html/030\$

030/output03.txt
david@intel-compute-stick:/var/www/html/030\$ mysql -u root -p
Enter password:
Welcome to the MariaDB monitor.  Commands end with ; or g.
Your MariaDB connection id is 1487
Server version: 10.5.12-MariaDB-0+deb11u1 Debian 11

Copyright (c) 2000, 2018, Oracle, MariaDB Corporation Ab and others.

Type 'help;' or 'h' for help. Type 'c' to clear the current input statement.

MariaDB [(none)]> CREATE DATABASE menge003
    -> ;
Query OK, 1 row affected (0.001 sec)

MariaDB [(none)]> USE menge003;
Database changed
MariaDB [menge003]> CREATE TABLE a (x VARCHAR (4));
Query OK, 0 rows affected (0.048 sec)

MariaDB [menge003]> CREATE TABLE b (x VARHCAR (4));
ERROR 4161 (HY000): Unknown data type: 'VARHCAR'
MariaDB [menge003]> CREATE TABLE b (x VARCHAR (4));
Query OK, 0 rows affected (0.054 sec)

MariaDB [menge003]> CREATE TABLE c (x VARCHAR (4));
Query OK, 0 rows affected (0.051 sec)

MariaDB [menge003]> SELECT x FROM a;
+------+
| x    |
+------+
| 6    |
| 5    |
| 8    |
| 2    |
| 1    |
| 0    |
| 5    |
| 14   |
| 10   |
| 13   |
| 4    |
| 0    |
| 5    |
| 3    |
| 3    |
| 0    |
| 4    |
| 2    |
| 5    |
| 8    |
+------+
20 rows in set (0.001 sec)

MariaDB [menge003]> SELECT x FROM (SELECT x FROM a INTERSECT SELECT x FROM b)x ORDER BY x;
+------+
| x    |
+------+
| 0    |
| 1    |
| 10   |
| 14   |
| 2    |
| 3    |
| 6    |
| 8    |
+------+
8 rows in set (0.003 sec)

MariaDB [menge003]> SELECT x FROM (SELECT x FROM a INTERSECT SELECT x FROM c)x ORDER BY x;
+------+
| x    |
+------+
| 0    |
| 10   |
| 13   |
| 14   |
| 2    |
| 3    |
| 4    |
| 6    |
| 8    |
+------+
9 rows in set (0.003 sec)

MariaDB [menge003]> SELECT x FROM (SELECT x FROM b INTERSECT SELECT x FROM c)x ORDER BY x;
+------+
| x    |
+------+
| 0    |
| 10   |
| 11   |
| 12   |
| 14   |
| 2    |
| 3    |
| 6    |
| 8    |
| 9    |
+------+
10 rows in set (0.003 sec)

MariaDB [menge003]> SELECT x FROM (SELECT x FROM a UNION SELECT x FROM b)x ORDER BY x;
+------+
| x    |
+------+
| 0    |
| 1    |
| 10   |
| 11   |
| 12   |
| 13   |
| 14   |
| 2    |
| 3    |
| 4    |
| 5    |
| 6    |
| 7    |
| 8    |
| 9    |
+------+
15 rows in set (0.003 sec)

MariaDB [menge003]> SELECT x FROM (SELECT x FROM a UNION SELECT x FROM c)x ORDER BY x;
+------+
| x    |
+------+
| 0    |
| 1    |
| 10   |
| 11   |
| 12   |
| 13   |
| 14   |
| 2    |
| 3    |
| 4    |
| 5    |
| 6    |
| 8    |
| 9    |
+------+
14 rows in set (0.003 sec)

MariaDB [menge003]> SELECT x FROM (SELECT x FROM b UNION SELECT x FROM c)x ORDER BY x;
+------+
| x    |
+------+
| 0    |
| 1    |
| 10   |
| 11   |
| 12   |
| 13   |
| 14   |
| 2    |
| 3    |
| 4    |
| 6    |
| 7    |
| 8    |
| 9    |
+------+
14 rows in set (0.003 sec)

MariaDB [menge003]> SELECT x FROM (
    ->     SELECT x FROM (SELECT x FROM a UNION SELECT x FROM b)x
    ->     INTERSECT
    ->     SELECT x FROM c
    -> )x ORDER BY x;
+------+
| x    |
+------+
| 0    |
| 10   |
| 11   |
| 12   |
| 13   |
| 14   |
| 2    |
| 3    |
| 4    |
| 6    |
| 8    |
| 9    |
+------+
12 rows in set (0.003 sec)

MariaDB [menge003]> SELECT x FROM (
    ->     SELECT x FROM (SELECT x FROM a INTERSECT SELECT x FROM c)x
    ->     UNION
    ->     SELECT x FROM (SELECT x FROM b INTERSECT SELECT x FROM c)x
    -> )x ORDER BY x;
+------+
| x    |
+------+
| 0    |
| 10   |
| 11   |
| 12   |
| 13   |
| 14   |
| 2    |
| 3    |
| 4    |
| 6    |
| 8    |
| 9    |
+------+
12 rows in set (0.005 sec)

MariaDB [menge003]> SELECT x FROM (
    ->     SELECT x FROM (SELECT x FROM a UNION SELECT x FROM c)x
    ->     INTERSECT
    ->     SELECT x FROM b
    -> )x ORDER BY x;
+------+
| x    |
+------+
| 0    |
| 1    |
| 10   |
| 11   |
| 12   |
| 14   |
| 2    |
| 3    |
| 6    |
| 8    |
| 9    |
+------+
11 rows in set (0.004 sec)

MariaDB [menge003]> SELECT x FROM (
    ->     SELECT x FROM (SELECT x FROM a INTERSECT SELECT x FROM b)x
    ->     UNION
    ->     SELECT x FROM (SELECT x FROM c INTERSECT SELECT x FROm b)x
    -> )x ORDER BY x;
+------+
| x    |
+------+
| 0    |
| 1    |
| 10   |
| 11   |
| 12   |
| 14   |
| 2    |
| 3    |
| 6    |
| 8    |
| 9    |
+------+
11 rows in set (0.006 sec)

MariaDB [menge003]> SELECT x FROM (
    ->     SELECT x FROM (SELECT x FROM b UNION SELECT x FROM c)x
    ->     INTERSECT
    ->     SELECT x FROM a
    -> )x ORDER BY x;
+------+
| x    |
+------+
| 0    |
| 1    |
| 10   |
| 13   |
| 14   |
| 2    |
| 3    |
| 4    |
| 6    |
| 8    |
+------+
10 rows in set (0.004 sec)

MariaDB [menge003]> SELECT x FROM (
    ->     SELECT x FROM (SELECT x FROM b INTERSECT SELECT x FROM a)x
    ->     UNION
    ->     SELECT x FROM (SELECT x FROM c INTERSECT SELECT x FROM a)x
    -> )x ORDER BY x;
+------+
| x    |
+------+
| 0    |
| 1    |
| 10   |
| 13   |
| 14   |
| 2    |
| 3    |
| 4    |
| 6    |
| 8    |
+------+
10 rows in set (0.005 sec)

MariaDB [menge003]> quit
Bye
david@intel-compute-stick:/var/www/html/030\$

030/output04.txt
<?php
include ('/home/david/mysqldata.php');

\$handle = mysql_connect ("127.0.0.1", \$MYSQL_NAME, \$MYSQL_PASSWORD);

mysql_select_db ("test031", \$handle);

mysql_query ("INSERT INTO def VALUES ("002", "001")", \$handle);

\$result = mysql_query ("SELECT * FROM abc INNER JOIN def ON abc.name1 = def.name3", \$handle);
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["name1"] . " " . \$row ["name2"] . " " . \$row ["name3"] . " " . \$row ["name4"] . "<br>n";
\$result = mysql_query ("SELECT * FROM abc LEFT JOIN def ON abc.name2 = def.name4", \$handle);
while (\$row = mysql_fetch_row (\$result))
    echo \$row [0] . " " . \$row [1] . " " . \$row [2] . " " . \$row [3] . "<br>n";

mysql_close (\$handle);
?>
031/database.php
<?php
session_start ();
?>

<FORM METHOD="GET" ACTION="./form1.php">
<INPUT TYPE="password" NAME="password1"></INPUT>
<INPUT TYPE="submit"></INPUT>
</FORM>

<?php
echo session_id () . "<br>n";

setcookie ("Cookie31", "Dies ist ein Cookie", time () + 3600);

echo htmlentities (\$_GET ["password1"]) . "<br>n";
echo htmlentities (\$_COOKIE ["Cookie31"]) . "<br>n";
echo htmlentities (\$_COOKIE ["Cookie31a"]) . "<br>n";
?>
031/form1.php
GET /031/form1.php?password1=ICH_BIN_DAS_PASSWORT HTTP/1.1
host: localhost
Cookie: Cookie31=ICH_BIN_DAS_COOKIE_IM_REQUEST
031/httprequest01.txt
POST /test.php HTTP/1.1
Host: 192.168.178.21
Content-Length: 7
Content-Type: application/x-www-form-urlencoded

q=Hallo
031/httprequest02.txt
001 001 001 001<br>
001 002 001 001<br>
001 001 001 002<br>
001 002 001 002<br>
002 001 002 001<br>
002 002 002 001<br>
002 001 002 001<br>
002 002 002 001<br>
001 001 001 001<br>
002 001 001 001<br>
001 002 001 002<br>
002 002 001 002<br>
001 001 002 001<br>
002 001 002 001<br>
001 001 002 001<br>
002 001 002 001<br>
031/output01.txt
0<br>
1<br>
10<br>
11<br>
2<br>
3<br>
5<br>
7<br>
8<br>
9<br>
<br><br>

0<br>
1<br>
10<br>
11<br>
2<br>
3<br>
4<br>
5<br>
7<br>
9<br>
<br><br>

0<br>
1<br>
10<br>
11<br>
2<br>
3<br>
5<br>
6<br>
7<br>
9<br>
<br><br>

0<br>
1<br>
10<br>
11<br>
2<br>
3<br>
4<br>
5<br>
6<br>
7<br>
8<br>
9<br>
<br><br>

0<br>
1<br>
10<br>
11<br>
2<br>
3<br>
4<br>
5<br>
6<br>
7<br>
8<br>
9<br>
<br><br>

0<br>
1<br>
10<br>
11<br>
2<br>
3<br>
4<br>
5<br>
6<br>
7<br>
8<br>
9<br>
<br><br>

0<br>
1<br>
10<br>
11<br>
2<br>
3<br>
4<br>
5<br>
6<br>
7<br>
9<br>
<br><br>

0<br>
1<br>
10<br>
11<br>
2<br>
3<br>
4<br>
5<br>
6<br>
7<br>
9<br>
<br><br>

0<br>
1<br>
10<br>
11<br>
2<br>
3<br>
5<br>
6<br>
7<br>
8<br>
9<br>
<br><br>

0<br>
1<br>
10<br>
11<br>
2<br>
3<br>
5<br>
6<br>
7<br>
8<br>
9<br>
<br><br>

0<br>
1<br>
10<br>
11<br>
2<br>
3<br>
4<br>
5<br>
7<br>
8<br>
9<br>
<br><br>

0<br>
1<br>
10<br>
11<br>
2<br>
3<br>
4<br>
5<br>
7<br>
8<br>
9<br>
<br><br>

031/output02.txt
Nicht a und nicht b und nicht c
SELECT x FROM (
    SELECT x FROM (
        SELECT x FROM (
            SELECT x FROM (
                SELECT x FROM (
                    SELECT x FROM b
                    UNION
                    SELECT x FROM a
                )x
                EXCEPT
                SELECT x FROM c
            )x
            INTERSECT
            SELECT x FROM (
                SELECT x FROM (
                    SELECT x FROM a
                    UNION
                    SELECT x FROM c
                )x
                EXCEPT
                SELECT x FROM b
            )x
        )x
        INTERSECT
        SELECT x FROM (
            SELECT x FROM (
                SELECT x FROM c
                UNION
                SELECT x FROM b
            )x
            EXCEPT
            SELECT x FROM a
        )x
    )x
    UNION
    SELECT x FROM (
        SELECT x FROM (
            SELECT x FROM (
                SELECT x FROM (
                    SELECT x FROM (
                        SELECT x FROM b
                        UNION
                        SELECT x FROM a
                    )x
                    EXCEPT
                    SELECT x FROM c
                )x
                INTERSECT
                SELECT x FROM (
                    SELECT x FROM (
                        SELECT x FROM c
                        UNION
                        SELECT x FROM b
                    )x
                    EXCEPT
                    SELECT x FROM a
                )x
            )x
            INTERSECT
            SELECT x FROM b
        )x
        UNION
        SELECT x FROM (
            SELECT x FROM (
                SELECT x FROM (
                    SELECT x FROM (
                        SELECT x FROM (
                            SELECT x FROM a
                            UNION
                            SELECT x FROM c
                        )x
                        EXCEPT
                        SELECT x FROM b
                    )x
                    INTERSECT
                    SELECT x FROM a
                )x
                INTERSECT
                SELECT x FROM c
            )x
            UNION
            SELECT x FROM (
                SELECT x FROM (
                    SELECT x FROM a
                    INTERSECT
                    SELECT x FROM b
                )x
                INTERSECT
                SELECT x FROM c
            )x
        )x
    )x
)x

        c b a   y
0       0 0 0   1
1       0 0 1   0
2       0 1 0   1
3       0 1 1   0
4       1 0 0   0
5       1 0 1   1
6       1 1 0   0
7       1 1 1   1

Nicht c und b und nicht a
031/quinequantity2.txt
Nicht a und nicht b und nicht c
SELECT x FROM (
    SELECT x FROM (
        SELECT x FROM (
            SELECT x FROM (
                SELECT x FROM b
                UNION
                SELECT x FROM a
            )x
            EXCEPT
            SELECT x FROM c
        )x
        INTERSECT
        SELECT x FROM (
            SELECT x FROM (
                SELECT x FROM a
                UNION
                SELECT x FROM c
            )x
            EXCEPT
            SELECT x FROM b
        )x
    )x
    INTERSECT
    SELECT x FROM (
        SELECT x FROM (
            SELECT x FROM c
            UNION
            SELECT x FROM b
        )x
        EXCEPT
        SELECT x FROM a
    )x
)x

SELECT x FROM (
    SELECT x FROM (
        SELECT x FROM (
            SELECT x FROM (
                SELECT x FROM b
                UNION
                SELECT x FROM a
            )x
            EXCEPT
            SELECT x FROM c
        )x
        INTERSECT
        SELECT x FROM (
            SELECT x FROM (
                SELECT x FROM c
                UNION
                SELECT x FROM b
            )x
            EXCEPT
            SELECT x FROM a
        )x
    )x
    INTERSECT
    SELECT x FROM b
)x

SELECT x FROM (
    SELECT x FROM (
        SELECT x FROM (
            SELECT x FROM (
                SELECT x FROM a
                UNION
                SELECT x FROM c
            )x
            EXCEPT
            SELECT x FROM b
        )x
        INTERSECT
        SELECT x FROM a
    )x
    INTERSECT
    SELECT x FROM c
)x

SELECT x FROM (
    SELECT x FROM (
        SELECT x FROM a
        INTERSECT
        SELECT x FROM b
    )x
    INTERSECT
    SELECT x FROM c
)x

        c b a   y
0       0 0 0   1
1       0 0 1   0
2       0 1 0   1
3       0 1 1   0
4       1 0 0   0
5       1 0 1   1
6       1 1 0   0
7       1 1 1   1

Nicht c und b und nicht a
031/quinequantity.txt
<?php
include ('/home/david/mysqldata.php');

\$handle = mysql_connect ("127.0.0.1", \$MYSQL_NAME, \$MYSQL_PASSWORD);

mysql_query ("CREATE DATABASE menge008", \$handle);
mysql_query ("USE menge008", \$handle);

mysql_query ("CREATE TABLE a (x VARCHAR (4))", \$handle);
mysql_query ("CREATE TABLE b (x VARCHAR (4))", \$handle);
mysql_query ("CREATE TABLE c (x VARCHAR (4))", \$handle);

for (\$i = 0;  \$i < 20;  \$i++) {
    mysql_query ("INSERT INTO a VALUES ("". rand () % 64 ."")", \$handle);
    mysql_query ("INSERT INTO b VALUES ("". rand () % 64 ."")", \$handle);
    mysql_query ("INSERT INTO c VALUES ("". rand () % 64 ."")", \$handle);
}
/*
A AND B
A AND C
B AND C
A OR B
A OR C
B OR C
(A OR B) AND C = A AND C OR B AND C
(A OR C) AND B = A AND B OR C AND B
(B OR C) AND A = B AND A OR C AND A
*/

/*
A AND B
A AND C
B AND C
A OR B
A OR C
B OR C

SELECT x FROM (SELECT x FROM a INTERSECT SELECT x FROM b)x ORDER BY x
SELECT x FROM (SELECT x FROM a INTERSECT SELECT x FROM c)x ORDER BY x
SELECT x FROM (SELECT x FROM b INTERSECT SELECT x FROM c)x ORDER BY x
SELECT x FROM (SELECT x FROM a UNION SELECT x FROM b)x ORDER BY x
SELECT x FROM (SELECT x FROM a UNION SELECT x FROM c)x ORDER BY x
SELECT x FROM (SELECT x FROM b UNION SELECT x FROM c)x ORDER BY x

*/

\$result=mysql_query ("SELECT x FROM (SELECT x FROM a INTERSECT SELECT x FROM b)x ORDER BY x", \$handle);
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br><br>nn";
\$result=mysql_query ("SELECT x FROM (SELECT x FROM a INTERSECT SELECT x FROM c)x ORDER BY x", \$handle);
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br><br>nn";
\$result=mysql_query ("SELECT x FROM (SELECT x FROM b INTERSECT SELECT x FROM c)x ORDER BY x", \$handle);
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br><br>nn";
\$result=mysql_query ("SELECT x FROM (SELECT x FROM a UNION SELECT x FROM b)x ORDER BY x", \$handle);
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br><br>nn";
\$result=mysql_query ("SELECT x FROM (SELECT x FROM a UNION SELECT x FROM c)x ORDER BY x", \$handle);
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br><br>nn";
\$result=mysql_query ("SELECT x FROM (SELECT x FROM b UNION SELECT x FROM c)x ORDER BY x", \$handle);
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br><br>nn";


/*
(A OR B) AND C = A AND C OR B AND C

SELECT x FROM (
    SELECT x FROM (SELECT x FROM a UNION SELECT x FROM b)x
    INTERSECT
    SELECT x FROM c
)x ORDER BY x

SELECT x FROM (
    SELECT x FROM (SELECT x FROM a INTERSECT SELECT x FROM c)x
    UNION
    SELECT x FROM (SELECT x FROM b INTERSECT SELECT x FROM c)x
)x ORDER BY x
*/

\$result=mysql_query ("SELECT x FROM (SELECT x FROM (SELECT x FROM a UNION SELECT x FROM b)x INTERSECT SELECT x FROM c)x ORDER BY x", \$handle);
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br><br>nn";

\$result=mysql_query ("SELECT x FROM (SELECT x FROM (SELECT x FROM a INTERSECT SELECT x FROM c)x UNION SELECT x FROM (SELECT x FROM b INTERSECT SELECT x FROM c)x)x ORDER BY x", \$handle);
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br><br>nn";

/*
(A OR C) AND B = A AND B OR C AND B

SELECT x (
    SELECT x FROM (SELECT x FROM a UNION SELECT x FROM c)x
    INTERSECT
    SELECT x FROM b
)x ORDER BY x

SELECT x (
    SELECT x FROM (SELECT x FROM a INTERSECT SELECT x FROM b)x
    UNION
    SELECT x FROM (SELECT x FROM c INTERSECT SELECT x FROM b)x
)x ORDER BY x
*/

\$result=mysql_query ("SELECT x FROM (SELECT x FROM (SELECT x FROM a UNION SELECT x FROM c)x INTERSECT SELECT x FROM b)x ORDER BY x", \$handle);
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br><br>nn";

\$result=mysql_query ("SELECT x FROM (SELECT x FROM (SELECT x FROM a INTERSECT SELECT x FROM b)x UNION SELECT x FROM (SELECT x FROM c INTERSECT SELECT x FROM b)x)x ORDER BY x", \$handle);
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br><br>nn";


/*
(B OR C) AND A = B AND A OR C AND A

SELECT x FROM (
    SELECT x FROM (SELECT x FROM b UNION SELECT x FROM c)x
    INTERSECT
    SELECT x FROM a
)x ORDER BY x

SELECT x FROM (
    SELECT x FROM (SELECT x FROM b INTERSECT SELECT x FROM a)x
    UNION
    SELECT x FROM (SELECT x FROM c INTERSECT SELECT x FROM a)x
)x ORDER BY x

*/


\$result=mysql_query ("SELECT x FROM (SELECT x FROM (SELECT x FROM b UNION SELECT x FROM c)x INTERSECT SELECT x FROM a)x ORDER BY x", \$handle);
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br><br>nn";

\$result=mysql_query ("SELECT x FROM (SELECT x FROM (SELECT x FROM b INTERSECT SELECT x FROM a)x UNION SELECT x FROM (SELECT x FROM c INTERSECT SELECT x FROM a)x)x ORDER BY x", \$handle);
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br><br>nn";

mysql_close (\$handle);
?>
031/sqlquantity2.php
<?php
include ('/home/david/mysqldata.php');

\$handle = mysql_connect ("127.0.0.1", \$MYSQL_NAME, \$MYSQL_PASSWORD);

mysql_query ("CREATE DATABASE menge007", \$handle);
mysql_query ("USE menge007", \$handle);

mysql_query ("CREATE TABLE a (x VARCHAR (4))", \$handle);
mysql_query ("CREATE TABLE b (x VARCHAR (4))", \$handle);
mysql_query ("CREATE TABLE c (x VARCHAR (4))", \$handle);

for (\$i = 0;  \$i < 20;  \$i++) {
    mysql_query ("INSERT INTO a VALUES ("". rand () % 12 ."")", \$handle);
    mysql_query ("INSERT INTO b VALUES ("". rand () % 12 ."")", \$handle);
    mysql_query ("INSERT INTO c VALUES ("". rand () % 12 ."")", \$handle);
}
/*
A AND B
A AND C
B AND C
A OR B
A OR C
B OR C
(A OR B) AND C = A AND C OR B AND C
(A OR C) AND B = A AND B OR C AND B
(B OR C) AND A = B AND A OR C AND A
*/

/*
A AND B
A AND C
B AND C
A OR B
A OR C
B OR C

SELECT x FROM (SELECT x FROM a INTERSECT SELECT x FROM b)x ORDER BY x
SELECT x FROM (SELECT x FROM a INTERSECT SELECT x FROM c)x ORDER BY x
SELECT x FROM (SELECT x FROM b INTERSECT SELECT x FROM c)x ORDER BY x
SELECT x FROM (SELECT x FROM a UNION SELECT x FROM b)x ORDER BY x
SELECT x FROM (SELECT x FROM a UNION SELECT x FROM c)x ORDER BY x
SELECT x FROM (SELECT x FROM b UNION SELECT x FROM c)x ORDER BY x

*/

\$result=mysql_query ("SELECT x FROM (SELECT x FROM a INTERSECT SELECT x FROM b)x ORDER BY x", \$handle);
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br><br>nn";
\$result=mysql_query ("SELECT x FROM (SELECT x FROM a INTERSECT SELECT x FROM c)x ORDER BY x", \$handle);
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br><br>nn";
\$result=mysql_query ("SELECT x FROM (SELECT x FROM b INTERSECT SELECT x FROM c)x ORDER BY x", \$handle);
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br><br>nn";
\$result=mysql_query ("SELECT x FROM (SELECT x FROM a UNION SELECT x FROM b)x ORDER BY x", \$handle);
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br><br>nn";
\$result=mysql_query ("SELECT x FROM (SELECT x FROM a UNION SELECT x FROM c)x ORDER BY x", \$handle);
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br><br>nn";
\$result=mysql_query ("SELECT x FROM (SELECT x FROM b UNION SELECT x FROM c)x ORDER BY x", \$handle);
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br><br>nn";


/*
(A OR B) AND C = A AND C OR B AND C

SELECT x FROM (
    SELECT x FROM (SELECT x FROM a UNION SELECT x FROM b)x
    INTERSECT
    SELECT x FROM c
)x ORDER BY x

SELECT x FROM (
    SELECT x FROM (SELECT x FROM a INTERSECT SELECT x FROM c)x
    UNION
    SELECT x FROM (SELECT x FROM b INTERSECT SELECT x FROM c)x
)x ORDER BY x
*/

\$result=mysql_query ("SELECT x FROM (SELECT x FROM (SELECT x FROM a UNION SELECT x FROM b)x INTERSECT SELECT x FROM c)x ORDER BY x", \$handle);
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br><br>nn";

\$result=mysql_query ("SELECT x FROM (SELECT x FROM (SELECT x FROM a INTERSECT SELECT x FROM c)x UNION SELECT x FROM (SELECT x FROM b INTERSECT SELECT x FROM c)x)x ORDER BY x", \$handle);
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br><br>nn";

/*
(A OR C) AND B = A AND B OR C AND B

SELECT x (
    SELECT x FROM (SELECT x FROM a UNION SELECT x FROM c)x
    INTERSECT
    SELECT x FROM b
)x ORDER BY x

SELECT x (
    SELECT x FROM (SELECT x FROM a INTERSECT SELECT x FROM b)x
    UNION
    SELECT x FROM (SELECT x FROM c INTERSECT SELECT x FROM b)x
)x ORDER BY x
*/

\$result=mysql_query ("SELECT x FROM (SELECT x FROM (SELECT x FROM a UNION SELECT x FROM c)x INTERSECT SELECT x FROM b)x ORDER BY x", \$handle);
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br><br>nn";

\$result=mysql_query ("SELECT x FROM (SELECT x FROM (SELECT x FROM a INTERSECT SELECT x FROM b)x UNION SELECT x FROM (SELECT x FROM c INTERSECT SELECT x FROM b)x)x ORDER BY x", \$handle);
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br><br>nn";


/*
(B OR C) AND A = B AND A OR C AND A

SELECT x FROM (
    SELECT x FROM (SELECT x FROM b UNION SELECT x FROM c)x
    INTERSECT
    SELECT x FROM a
)x ORDER BY x

SELECT x FROM (
    SELECT x FROM (SELECT x FROM b INTERSECT SELECT x FROM a)x
    UNION
    SELECT x FROM (SELECT x FROM c INTERSECT SELECT x FROM a)x
)x ORDER BY x

*/


\$result=mysql_query ("SELECT x FROM (SELECT x FROM (SELECT x FROM b UNION SELECT x FROM c)x INTERSECT SELECT x FROM a)x ORDER BY x", \$handle);
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br><br>nn";

\$result=mysql_query ("SELECT x FROM (SELECT x FROM (SELECT x FROM b INTERSECT SELECT x FROM a)x UNION SELECT x FROM (SELECT x FROM c INTERSECT SELECT x FROM a)x)x ORDER BY x", \$handle);
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br><br>nn";

mysql_close (\$handle);
?>
031/sqlquantity.php
--- -	2022-04-23 16:46:02.496637682 +0200
+++ /var/www/html/031/output02.txt	2022-04-23 16:45:47.130288161 +0200
@@ -1,31 +1,36 @@
+0<br>
+1<br>
 10<br>
+11<br>
 2<br>
 3<br>
-4<br>
+5<br>
 7<br>
 8<br>
 9<br>
 <br><br>

 0<br>
+1<br>
 10<br>
+11<br>
 2<br>
 3<br>
 4<br>
-6<br>
+5<br>
 7<br>
-8<br>
 9<br>
 <br><br>

+0<br>
 1<br>
 10<br>
 11<br>
 2<br>
 3<br>
-4<br>
+5<br>
+6<br>
 7<br>
-8<br>
 9<br>
 <br><br>

@@ -64,6 +69,7 @@
 2<br>
 3<br>
 4<br>
+5<br>
 6<br>
 7<br>
 8<br>
@@ -77,9 +83,9 @@
 2<br>
 3<br>
 4<br>
+5<br>
 6<br>
 7<br>
-8<br>
 9<br>
 <br><br>

@@ -90,33 +96,59 @@
 2<br>
 3<br>
 4<br>
+5<br>
 6<br>
 7<br>
-8<br>
 9<br>
 <br><br>

+0<br>
+1<br>
+10<br>
+11<br>
+2<br>
+3<br>
+5<br>
+6<br>
+7<br>
+8<br>
+9<br>
 <br><br>

+0<br>
+1<br>
+10<br>
+11<br>
+2<br>
+3<br>
+5<br>
+6<br>
+7<br>
+8<br>
+9<br>
 <br><br>

 0<br>
+1<br>
 10<br>
+11<br>
 2<br>
 3<br>
 4<br>
-6<br>
+5<br>
 7<br>
 8<br>
 9<br>
 <br><br>

 0<br>
+1<br>
 10<br>
+11<br>
 2<br>
 3<br>
 4<br>
-6<br>
+5<br>
 7<br>
 8<br>
 9<br>
031/TqLWat.diff
<?php
include ('/home/david/mysqldata.php');

\$handle = mysql_connect ("127.0.0.1", \$MYSQL_NAME, \$MYSQL_PASSWORD);

mysql_select_db ("test032", \$handle);

mysql_query ("INSERT INTO def VALUES ("002", "002")", \$handle);

\$result = mysql_query ("SELECT * FROM abc JOIN def", \$handle);
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["name1"] . " " .\$row ["name2"] . " " . \$row ["name3"] . " " . \$row ["name4"] . "<br>n";
\$result = mysql_query ("SELECT * FROM abc INNER JOIN def ON abc.name1 = def.name3", \$handle);
while (\$row = mysql_fetch_row (\$result))
    echo \$row [0] . " " . \$row [1] . " " . \$row [2] . " " . \$row [3] . "<br>n";

mysql_close (\$handle);
?>
032/database.php
GET /032/phptest.php?password1=THIS_IS_THE_TEXT HTTP/1.1
host: localhost
Cookie: Cookie32a=SUPER_COOKIE
032/httrequest01.txt
avid@intel-compute-stick:~\$ mysql -u root -p
Enter password:
Welcome to the MariaDB monitor.  Commands end with ; or g.
Your MariaDB connection id is 1636
Server version: 10.5.12-MariaDB-0+deb11u1 Debian 11

Copyright (c) 2000, 2018, Oracle, MariaDB Corporation Ab and others.

Type 'help;' or 'h' for help. Type 'c' to clear the current input statement.

MariaDB [(none)]> CREATE DATABASE test032;
Query OK, 1 row affected (0.001 sec)

MariaDB [(none)]> USE test032;
Database changed
MariaDB [test032]> CREATE TABLE abc (name1 VARCHAR (32), name2 VARCHAR (32));
Query OK, 0 rows affected (0.057 sec)

MariaDB [test032]> CREATE TABLE def (name3 VARCHAR (32), name4 VARCHAR (32));
Query OK, 0 rows affected (0.054 sec)

MariaDB [test032]> INSERT INTO abc VALUES ("001", "001");
Query OK, 1 row affected (0.030 sec)

MariaDB [test032]> INSERT INTO abc VALUES ("001", "002");
Query OK, 1 row affected (0.029 sec)

MariaDB [test032]> INSERT INTO abc VALUES ("002", "001");
Query OK, 1 row affected (0.028 sec)

MariaDB [test032]> INSERT INTO abc VALUES ("002", "002");
Query OK, 1 row affected (0.030 sec)

MariaDB [test032]> INSERT INTO def VALUES ("001", "001");
Query OK, 1 row affected (0.031 sec)

MariaDB [test032]> INSERT INTO def VALUES ("001", "002");
Query OK, 1 row affected (0.026 sec)

MariaDB [test032]> INSERT INTO def VALUES ("abc", "def");
Query OK, 1 row affected (0.031 sec)

MariaDB [test032]> SELECT * FROM abc;
+-------+-------+
| name1 | name2 |
+-------+-------+
| 001   | 001   |
| 001   | 002   |
| 002   | 001   |
| 002   | 002   |
+-------+-------+
4 rows in set (0.002 sec)

MariaDB [test032]> SELECT * FROM def;
+-------+-------+
| name3 | name4 |
+-------+-------+
| 001   | 001   |
| 001   | 002   |
| abc   | def   |
+-------+-------+
3 rows in set (0.001 sec)

MariaDB [test032]> SELECT * FROM abc JOIN def;
+-------+-------+-------+-------+
| name1 | name2 | name3 | name4 |
+-------+-------+-------+-------+
| 001   | 001   | 001   | 001   |
| 001   | 001   | 001   | 002   |
| 001   | 001   | abc   | def   |
| 001   | 002   | 001   | 001   |
| 001   | 002   | 001   | 002   |
| 001   | 002   | abc   | def   |
| 002   | 001   | 001   | 001   |
| 002   | 001   | 001   | 002   |
| 002   | 001   | abc   | def   |
| 002   | 002   | 001   | 001   |
| 002   | 002   | 001   | 002   |
| 002   | 002   | abc   | def   |
+-------+-------+-------+-------+
12 rows in set (0.001 sec)

MariaDB [test032]> SELECT * FROM abc INNER JOIN def ON abc.name1 = def.name3;
+-------+-------+-------+-------+
| name1 | name2 | name3 | name4 |
+-------+-------+-------+-------+
| 001   | 001   | 001   | 001   |
| 001   | 001   | 001   | 002   |
| 001   | 002   | 001   | 001   |
| 001   | 002   | 001   | 002   |
+-------+-------+-------+-------+
4 rows in set (0.002 sec)

MariaDB [test032]> SELECT * FROM abc LEFT JOIN def ON abc.name1 = def.name3;
+-------+-------+-------+-------+
| name1 | name2 | name3 | name4 |
+-------+-------+-------+-------+
| 001   | 001   | 001   | 001   |
| 001   | 002   | 001   | 001   |
| 001   | 001   | 001   | 002   |
| 001   | 002   | 001   | 002   |
| 002   | 001   | NULL  | NULL  |
| 002   | 002   | NULL  | NULL  |
+-------+-------+-------+-------+
6 rows in set (0.002 sec)

MariaDB [test032]> SELECT * FROM abc RIGHT JOIN def ON abc.name2 = def.name4;
+-------+-------+-------+-------+
| name1 | name2 | name3 | name4 |
+-------+-------+-------+-------+
| 001   | 001   | 001   | 001   |
| 001   | 002   | 001   | 002   |
| 002   | 001   | 001   | 001   |
| 002   | 002   | 001   | 002   |
| NULL  | NULL  | abc   | def   |
+-------+-------+-------+-------+
5 rows in set (0.002 sec)

MariaDB [test032]> QUIT
Bye
david@intel-compute-stick:~\$

032/output01.txt
001 001 001 001<br>
001 002 001 001<br>
002 001 001 001<br>
002 002 001 001<br>
001 001 001 002<br>
001 002 001 002<br>
002 001 001 002<br>
002 002 001 002<br>
001 001 abc def<br>
001 002 abc def<br>
002 001 abc def<br>
002 002 abc def<br>
001 001 002 002<br>
001 002 002 002<br>
002 001 002 002<br>
002 002 002 002<br>
001 001 002 002<br>
001 002 002 002<br>
002 001 002 002<br>
002 002 002 002<br>
001 001 001 001<br>
001 002 001 001<br>
001 001 001 002<br>
001 002 001 002<br>
002 001 002 002<br>
002 002 002 002<br>
002 001 002 002<br>
002 002 002 002<br>
032/output02.txt
david@intel-compute-stick:/var/www/html/032\$ telnet 127.0.0.1 80
Trying 127.0.0.1...
Connected to 127.0.0.1.
Escape character is '\^]'.
GET /032/phptest.php?password1=THIS_IS_THE_TEXT HTTP/1.1
host: localhost
Cookie: Cookie32a=SUPER_COOKIE

HTTP/1.1 200 OK
Date: Mon, 25 Apr 2022 17:31:57 GMT
Server: Apache/2.4.52 (Debian)
Set-Cookie: PHPSESSID=c8obdlqegig4099bc7p5v64tt5; path=/
Expires: Thu, 19 Nov 1981 08:52:00 GMT
Cache-Control: no-store, no-cache, must-revalidate, post-check=0, pre-check=0
Pragma: no-cache
Set-Cookie: Cookie32=Inhalt; expires=Mon, 25-Apr-2022 18:11:58 GMT; Max-Age=2400
Vary: Accept-Encoding
Content-Length: 186
Content-Type: text/html; charset=UTF-8


<form method="GET" action="./phptest.php">
<input type="password" name="password1"></input>
<input type="submit"></input>
</form>

c8obdlqegig4099bc7p5v64tt5THIS_IS_THE_TEXTSUPER_COOKIEConnection closed by foreign host.
david@intel-compute-stick:/var/www/html/032\$

032/output03.txt
16<br>
28<br>
32<br>
50<br>
7<br>
16<br>
29<br>
43<br>
57<br>
16<br>
31<br>
60<br>
10<br>
14<br>
16<br>
17<br>
18<br>
21<br>
24<br>
28<br>
29<br>
31<br>
32<br>
33<br>
35<br>
37<br>
40<br>
43<br>
44<br>
46<br>
5<br>
50<br>
53<br>
57<br>
59<br>
6<br>
60<br>
7<br>
9<br>
0<br>
10<br>
12<br>
13<br>
15<br>
16<br>
17<br>
18<br>
19<br>
28<br>
29<br>
3<br>
31<br>
32<br>
34<br>
37<br>
39<br>
43<br>
46<br>
50<br>
57<br>
58<br>
6<br>
60<br>
61<br>
62<br>
63<br>
7<br>
8<br>
9<br>
0<br>
12<br>
13<br>
14<br>
15<br>
16<br>
19<br>
21<br>
24<br>
28<br>
29<br>
3<br>
31<br>
32<br>
33<br>
34<br>
35<br>
39<br>
40<br>
43<br>
44<br>
5<br>
50<br>
53<br>
57<br>
58<br>
59<br>
60<br>
61<br>
62<br>
63<br>
7<br>
8<br>
16<br>
29<br>
31<br>
43<br>
57<br>
60<br>
16<br>
29<br>
31<br>
43<br>
57<br>
60<br>
16<br>
28<br>
29<br>
32<br>
43<br>
50<br>
57<br>
7<br>
16<br>
28<br>
29<br>
32<br>
43<br>
50<br>
57<br>
7<br>
16<br>
28<br>
29<br>
32<br>
43<br>
50<br>
57<br>
7<br>
16<br>
28<br>
29<br>
32<br>
43<br>
50<br>
57<br>
7<br>
032/output04.txt
<?php
session_start ();
?>

<form method="GET" action="./phptest.php">
<input type="password" name="password1"></input>
<input type="submit"></input>
</form>

<?php
echo session_id ();
setcookie ("Cookie32", "Inhalt", time () + 2400);
echo htmlentities (\$_GET ["password1"]);

echo htmlentities (\$_COOKIE ["Cookie32"]);
echo htmlentities (\$_COOKIE ["Cookie32a"]);
?>
032/phptest.php
<?php
include ('/home/david/mysqldata.php');

\$handle = mysql_connect ("127.0.0.1", \$MYSQL_NAME, \$MYSQL_PASSWORD);

mysql_query ("CREATE DATABASE quantity004", \$handle);
mysql_select_db ("quantity004", \$handle);

mysql_query ("CREATE TABLE a (x VARCHAR (4))", \$handle);
mysql_query ("CREATE TABLE b (x VARCHAR (4))", \$handle);
mysql_query ("CREATE TABLE c (x VARCHAR (4))", \$handle);

for (\$i = 0;  \$i < 20;  \$i++) {
    mysql_query ("INSERT INTO a VALUES ("" . rand () % 64 . "")", \$handle);
    mysql_query ("INSERT INTO b VALUES ("" . rand () % 64 . "")", \$handle);
    mysql_query ("INSERT INTO c VALUES ("" . rand () % 64 . "")", \$handle);
}

/*
a AND b
a AND c
b AND c
a OR b
a OR c
b OR c
(a OR b) AND c = A AND c OR b AND c
(a OR c) AND b = A AND b OR c AND b
(b OR c) AND a = b AND a OR c AND a
*/

/*
a AND b
a AND c
b AND c

SELECT x FROM (SELECT x FROM a INTERSECT SELECT x FROM b)x ORDER BY x
SELECT x FROM (SELECT x FROM a INTERSECT SELECT x FROM c)x ORDER BY x
SELECT x FROM (SELECT x FROM b INTERSECT SELECT x FROM c)x ORDER BY x
*/


\$result = mysql_query("SELECT x FROM (SELECT x FROM a INTERSECT SELECT x FROM b)x ORDER BY x", \$handle);
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
\$result = mysql_query("SELECT x FROM (SELECT x FROM a INTERSECT SELECT x FROM c)x ORDER BY x", \$handle);
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
\$result = mysql_query("SELECT x FROM (SELECT x FROM b INTERSECT SELECT x FROM c)x ORDER BY x", \$handle);
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";


/*
a OR b
a OR c
b OR c

SELECT x FROM (SELECT x FROM a UNION SELECT x FROM b)x ORDER BY x
SELECT x FROM (SELECT x FROM a UNION SELECT x FROM c)x ORDER BY x
SELECT x FROM (SELECT x FROM b UNION SELECT x FROM c)x ORDER BY x
*/

\$result = mysql_query("SELECT x FROM (SELECT x FROM a UNION SELECT x FROM b)x ORDER BY x", \$handle);
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
\$result = mysql_query("SELECT x FROM (SELECT x FROM a UNION SELECT x FROM c)x ORDER BY x", \$handle);
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
\$result = mysql_query("SELECT x FROM (SELECT x FROM b UNION SELECT x FROM c)x ORDER BY x", \$handle);
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";

/*(a OR b) AND c = A AND c OR b AND c

SELECT x FROM (
    SELECT x FROM (SELECT x FROM a UNION SELECT x FROM b)
    INTERSECT
    SELECT x FROM c
)x ORDER BY x;

SELEC x FROM (
    SELECT x FROM (SELECT x FROM a INTERSECT SELECT x FROM c)
    UNION
    SELECT x FROM (SELECT x FROM b INTERSECT SELECT x FROM c)
)x ORDER BY x;
*/

\$result = mysql_query("SELECT x FROM (SELECT x FROM (SELECT x FROM a UNION SELECT x FROM b)x INTERSECT SELECT x FROM c)x ORDER BY x", \$handle);
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";

\$result = mysql_query("SELECT x FROM (SELECT x FROM (SELECT x FROM a INTERSECT SELECT x FROM c)x UNION SELECT x FROM (SELECT x FROM b INTERSECT SELECT x FROM c)x)x ORDER BY x", \$handle);
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";


/*(a OR c) AND b = A AND b OR c AND b
SELECT x FROM (
    SELECT x FROM (SELECT x FROM a UNION SELECT x FROM c)
    INTERSECT
    SELECT x FROM b
)x ORDER BY x;

SELECT x FROM (
    SELECT x FROM (SELECT x FROM a INTERSECT SELECT x FROM b)
    UNION
    SELECT x FROM (SELECT x FROM c INTERSECT SELECT x FROM b)
)x ORDER BY x;
*/

\$result = mysql_query("SELECT x FROM (SELECT x FROM (SELECT x FROM b UNION SELECT x FROM c)x INTERSECT SELECT x FROM a)x ORDER BY x", \$handle);
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";

\$result = mysql_query("SELECT x FROM (SELECT x FROM (SELECT x FROM b INTERSECT SELECT x FROM a)x UNION SELECT x FROM (SELECT x FROM c INTERSECT SELECT x FROM a)x)x ORDER BY x", \$handle);
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";


/*(b OR c) AND a = b AND a OR c AND a
SELECT x FROM (
    SELECT x FROM (SELECT x FROM b UNION SELECT x FROM c)
    INTERSECT
    SELECT x FROM a
)x ORDER BY x;

SELECT x FROM (
    SELECT x FROM (SELECT x FROM b INTERSECT SELECT x FROM a)
    UNION
    SELECT x FROM (SELECT x FROM c INTERSECT SELECT x FROM a)
)x ORDER BY x;
*/

\$result = mysql_query("SELECT x FROM (SELECT x FROM (SELECT x FROM b UNION SELECT x FROM c)x INTERSECT SELECT x FROM a)x ORDER BY x", \$handle);
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";

\$result = mysql_query("SELECT x FROM (SELECT x FROM (SELECT x FROM b INTERSECT SELECT x FROM a)x UNION SELECT x FROM (SELECT x FROM c INTERSECT SELECT x FROM a)x)x ORDER BY x", \$handle);
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";

mysql_close (\$handle);


?>
032/quantitysql.php
<?php
include ('/home/david/mysqldata.php');

\$handle = mysql_connect ("127.0.0.1", \$MYSQL_NAME, \$MYSQL_PASSWORD);

mysql_select_db ("test033", \$handle);

mysql_query ("INSERT INTO abc VALUES ("002", "002"", \$handle);

\$result = mysql_query ("SELECT * FROM abc JOIN def", \$handle);
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["name1"] . " " . \$row ["name2"] . " " . \$row ["name3"] . " " . \$row ["name4"] . "<br>n";

\$result = mysql_query ("SELECT * FROM abc INNER JOIN def ON abc.name1 = def.name3", \$handle);
while (\$row = mysql_fetch_row (\$result))
    echo \$row [0] . " " . \$row [1] . " " . \$row [2] . " " . \$row [3] . "<br>n";
mysql_close (\$handle);
?>
033/database.php
<?php
session_start ();
?>

<form method="GET" action="./form1.php">
<input type="password" name="password1"></input>
<input type="submit"></input>
</form>

<?php
echo session_id ();

echo htmlentities (\$_GET ["password1"]);

setcookie ("Cookie33", "Die ist Inhalt von Cookie 33", time () + 2400);

echo htmlentities (\$_COOKIE ["Cookie33a"]);
echo htmlentities (\$_COOKIE ["Cookie33"]);
?>
033/form1.php
GET /033/form1.php?password1=DIES_IST_PASSWORT_1 HTTP/1.1
host: localhost
Cookie: Cookie33a=DIES_IST_COOKIE_33a
033/httprequest01.txt
david@intel-compute-stick:~\$ mysql -u root -p
Enter password:
Welcome to the MariaDB monitor.  Commands end with ; or g.
Your MariaDB connection id is 1706
Server version: 10.5.12-MariaDB-0+deb11u1 Debian 11

Copyright (c) 2000, 2018, Oracle, MariaDB Corporation Ab and others.

Type 'help;' or 'h' for help. Type 'c' to clear the current input statement.

MariaDB [(none)]> CREATE DATABASE test033;
Query OK, 1 row affected (0.001 sec)

MariaDB [(none)]> USE test033;
Database changed
MariaDB [test033]> CREATE TABLE abc (name1 VARCHAR (32), name2 VARCHAR (32));
Query OK, 0 rows affected (0.058 sec)

MariaDB [test033]> CREATE TABLE def (name3 VARCHAR (32), name4 VARCHAR (32));
Query OK, 0 rows affected (0.060 sec)

MariaDB [test033]> INSERT INTO abc VALUES ("001", "001");
Query OK, 1 row affected (0.029 sec)

MariaDB [test033]> INSERT INTO abc VALUES ("001", "002");
Query OK, 1 row affected (0.028 sec)

MariaDB [test033]> INSERT INTO abc VALUES ("002", "001");
Query OK, 1 row affected (0.025 sec)

MariaDB [test033]> INSERT INTO abc VALUES ("002", "002");
Query OK, 1 row affected (0.029 sec)

MariaDB [test033]> INSERT INTO def VALUES ("001", "001");
Query OK, 1 row affected (0.027 sec)

MariaDB [test033]> INSERT INTO def VALUES ("001", "002");
Query OK, 1 row affected (0.028 sec)

MariaDB [test033]> INSERT INTO def VALUES ("abc", "def");
Query OK, 1 row affected (0.027 sec)

MariaDB [test033]> SELECT * FROM abc;
+-------+-------+
| name1 | name2 |
+-------+-------+
| 001   | 001   |
| 001   | 002   |
| 002   | 001   |
| 002   | 002   |
+-------+-------+
4 rows in set (0.001 sec)

MariaDB [test033]> SELECT * FROM abc JOIN def;
+-------+-------+-------+-------+
| name1 | name2 | name3 | name4 |
+-------+-------+-------+-------+
| 001   | 001   | 001   | 001   |
| 001   | 001   | 001   | 002   |
| 001   | 001   | abc   | def   |
| 001   | 002   | 001   | 001   |
| 001   | 002   | 001   | 002   |
| 001   | 002   | abc   | def   |
| 002   | 001   | 001   | 001   |
| 002   | 001   | 001   | 002   |
| 002   | 001   | abc   | def   |
| 002   | 002   | 001   | 001   |
| 002   | 002   | 001   | 002   |
| 002   | 002   | abc   | def   |
+-------+-------+-------+-------+
12 rows in set (0.001 sec)

MariaDB [test033]> SELECT * FROM def;
+-------+-------+
| name3 | name4 |
+-------+-------+
| 001   | 001   |
| 001   | 002   |
| abc   | def   |
+-------+-------+
3 rows in set (0.001 sec)

MariaDB [test033]>
MariaDB [test033]> SELECT * FROM abc INNER JOIN def ON abc.name1 = def.name3;
+-------+-------+-------+-------+
| name1 | name2 | name3 | name4 |
+-------+-------+-------+-------+
| 001   | 001   | 001   | 001   |
| 001   | 001   | 001   | 002   |
| 001   | 002   | 001   | 001   |
| 001   | 002   | 001   | 002   |
+-------+-------+-------+-------+
4 rows in set (0.002 sec)

MariaDB [test033]> SELECT * FROM abc LEFT JOIN def ON abc.name2 = def.name4;
+-------+-------+-------+-------+
| name1 | name2 | name3 | name4 |
+-------+-------+-------+-------+
| 001   | 001   | 001   | 001   |
| 002   | 001   | 001   | 001   |
| 001   | 002   | 001   | 002   |
| 002   | 002   | 001   | 002   |
+-------+-------+-------+-------+
4 rows in set (0.002 sec)

MariaDB [test033]> SELECT * FROM abc RIGHT JOIN def ON abc.name1 = def.name4;
+-------+-------+-------+-------+
| name1 | name2 | name3 | name4 |
+-------+-------+-------+-------+
| 001   | 001   | 001   | 001   |
| 001   | 002   | 001   | 001   |
| 002   | 001   | 001   | 002   |
| 002   | 002   | 001   | 002   |
| NULL  | NULL  | abc   | def   |
+-------+-------+-------+-------+
5 rows in set (0.002 sec)

MariaDB [test033]> QUIT
Bye
david@intel-compute-stick:~\$

033/output01.txt
001 001 001 001<br>
001 001 001 002<br>
001 001 abc def<br>
001 002 001 001<br>
001 002 001 002<br>
001 002 abc def<br>
002 001 001 001<br>
002 001 001 002<br>
002 001 abc def<br>
002 002 001 001<br>
002 002 001 002<br>
002 002 abc def<br>
001 001 001 001<br>
001 001 001 002<br>
001 002 001 001<br>
001 002 001 002<br>
033/output02.txt
david@intel-compute-stick:/var/www/html/033\$ telnet 127.0.0.1 80
Trying 127.0.0.1...
Connected to 127.0.0.1.
Escape character is '\^]'.
GET /033/form1.php?password1=DIES_IST_PASSWORT_1 HTTP/1.1
host: localhost
Cookie: Cookie33a=DIES_IST_COOKIE_33a

HTTP/1.1 200 OK
Date: Tue, 26 Apr 2022 14:07:27 GMT
Server: Apache/2.4.52 (Debian)
Set-Cookie: PHPSESSID=o3iijlaajnebt27uq05u75kt70; path=/
Expires: Thu, 19 Nov 1981 08:52:00 GMT
Cache-Control: no-store, no-cache, must-revalidate, post-check=0, pre-check=0
Pragma: no-cache
Set-Cookie: Cookie33=Die+ist+Inhalt+von+Cookie+33; expires=Tue, 26-Apr-2022 14:47:29 GMT; Max-Age=2400
Vary: Accept-Encoding
Content-Length: 194
Content-Type: text/html; charset=UTF-8


<form method="GET" action="./form1.php">
<input type="password" name="password1"></input>
<input type="submit"></input>
</form>

o3iijlaajnebt27uq05u75kt70DIES_IST_PASSWORT_1DIES_IST_COOKIE_33aConnection closed by foreign host.
david@intel-compute-stick:/var/www/html/033\$

033/output03.txt
23<br>
38<br>
4<br>
48<br>
61<br>
63<br>
7<br>
<br>
23<br>
33<br>
50<br>
7<br>
9<br>
<br>
10<br>
23<br>
31<br>
47<br>
7<br>
<br>
10<br>
2<br>
23<br>
26<br>
27<br>
29<br>
31<br>
33<br>
38<br>
4<br>
40<br>
42<br>
43<br>
46<br>
47<br>
48<br>
49<br>
5<br>
50<br>
53<br>
54<br>
61<br>
63<br>
7<br>
9<br>
<br>
10<br>
13<br>
18<br>
20<br>
21<br>
23<br>
24<br>
26<br>
28<br>
31<br>
33<br>
37<br>
38<br>
39<br>
4<br>
42<br>
43<br>
46<br>
47<br>
48<br>
49<br>
50<br>
54<br>
59<br>
6<br>
61<br>
63<br>
7<br>
8<br>
9<br>
<br>
10<br>
13<br>
18<br>
2<br>
20<br>
21<br>
23<br>
24<br>
27<br>
28<br>
29<br>
31<br>
33<br>
37<br>
38<br>
39<br>
4<br>
40<br>
47<br>
48<br>
5<br>
50<br>
53<br>
59<br>
6<br>
61<br>
63<br>
7<br>
8<br>
9<br>
<br>
10<br>
23<br>
31<br>
33<br>
47<br>
50<br>
7<br>
9<br>
<br>
10<br>
23<br>
31<br>
33<br>
47<br>
50<br>
7<br>
9<br>
<br>
23<br>
33<br>
38<br>
4<br>
48<br>
50<br>
61<br>
63<br>
7<br>
9<br>
<br>
23<br>
33<br>
38<br>
4<br>
48<br>
50<br>
61<br>
63<br>
7<br>
9<br>
<br>
10<br>
23<br>
31<br>
38<br>
4<br>
47<br>
48<br>
61<br>
63<br>
7<br>
<br>
10<br>
23<br>
31<br>
38<br>
4<br>
47<br>
48<br>
61<br>
63<br>
7<br>
<br>

033/output04.txt
<?php
include ('/home/david/mysqldata.php');

\$handle = mysql_connect ("127.0.0.1", \$MYSQL_NAME, \$MYSQL_PASSWORD);

mysql_query ("CREATE DATABASE quantity008", \$handle);;

mysql_select_db ("quantity008", \$handle);;

mysql_query ("CREATE TABLE a (x VARCHAR (4))", \$handle);;
mysql_query ("CREATE TABLE b (x VARCHAR (4))", \$handle);;
mysql_query ("CREATE TABLE c (x VARCHAR (4))", \$handle);;

for (\$i = 0;  \$i < 20;  \$i++) {
    mysql_query ("INSERT INTO a VALUES ("" .rand () % 64 . "")", \$handle);;
    mysql_query ("INSERT INTO b VALUES ("" .rand () % 64 ."")", \$handle);;
    mysql_query ("INSERT INTO c VALUES ("" .rand () % 64 ."")", \$handle);;
}

/*
a AND b
b AND c
a AND c

a OR b
a OR c
b OR c

(a OR b) AND c = a AND c OR b AND c
(a OR c) AND b = a AND b OR c AND b
(b OR c) AND a = b AND a OR c AND a
*/



/*
a AND b
b AND c
a AND c

SELECT x FROM (SELECT x FROM a INTERSECT SELECT x FROM b)x ORDER BY x
SELECT x FROM (SELECT x FROM b INTERSECT SELECT x FROM c)x ORDER BY x
SELECT x FROM (SELECT x FROM a INTERSECT SELECT x FROM c)x ORDER BY x
*/

/*
a OR b
a OR c
b OR c

SELECT x FROM (SELECT x FROM a UNION SELECT x FROM b)x ORDER BY x
SELECT x FROM (SELECT x FROM a UNION SELECT x FROM c)x ORDER BY x
SELECT x FROM (SELECT x FROM b UNION SELECT x FROM c)x ORDER BY x
*/

/*
(a OR b) AND c = a AND c OR b AND c

SELECT x FROM (
    SELECT x FROM (SELECT x FROM a UNION SELECT x FROM b)x
    INTERSECT
    SELECT x FROM c
)x ORDER BY x

SELECT x FROM (
    SELECT x FROM (SELECT x FROM a INTERSECT SELECT x FROM c)x
    UNION
    SELECT x FROM (SELECT x FROM b INTERSECT SELECT x FROM c)x
)x ORDER BY x

(a OR c) AND b = a AND b OR c AND b

SELECT x FROM (
    SELECT x FROM (SELECT x FROM a UNION SELECT x FROM c)x
    INTERSECT
    SELECT x FROM b
) x ORDER BY x

SELECT x FROM (
    SELECT x FROM (SELECT x FROM a INTERSECT SELECT x FROM b)x
    UNION
    SELECT x FROM (SELECT x FROM c INTERSECT SELECT x FROM b)x
)x ORDER BY x

(b OR c) AND a = b AND a OR c AND a

SELECT x FROM (
    SELECT x FROM (SELECT x FROM b UNION SELECT x FROM c)x
    INTERSECT
    SELECT x FROM a
)x ORDER BY x

SELECT x FROM (
    SELECT x FROM (SELECT x FROM b INTERSECT SELECT x FROM a)x
    UNION
    SELECT x FROM (SELECT x FROM c INTERSECT SELECT x FROM a)x
)x ORDER BY x
*/


\$result=mysql_query("SELECT x FROM (SELECT x FROM a INTERSECT SELECT x FROM b)x ORDER BY x", \$handle);
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";;
echo "<br>n";
\$result=mysql_query("SELECT x FROM (SELECT x FROM b INTERSECT SELECT x FROM c)x ORDER BY x", \$handle);
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";;
echo "<br>n";
\$result=mysql_query("SELECT x FROM (SELECT x FROM a INTERSECT SELECT x FROM c)x ORDER BY x", \$handle);
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";;
echo "<br>n";

\$result=mysql_query("SELECT x FROM (SELECT x FROM a UNION SELECT x FROM b)x ORDER BY x", \$handle);
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";;
echo "<br>n";
\$result=mysql_query("SELECT x FROM (SELECT x FROM a UNION SELECT x FROM c)x ORDER BY x", \$handle);
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";;
echo "<br>n";
\$result=mysql_query("SELECT x FROM (SELECT x FROM b UNION SELECT x FROM c)x ORDER BY x", \$handle);
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";;
echo "<br>n";


\$result=mysql_query("SELECT x FROM (SELECT x FROM (SELECT x FROM a UNION SELECT x FROM b)x INTERSECT SELECT x FROM c )x ORDER BY x", \$handle);
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";;
echo "<br>n";

\$result=mysql_query("SELECT x FROM (SELECT x FROM (SELECT x FROM a INTERSECT SELECT x FROM c)x UNION SELECT x FROM (SELECT x FROM b INTERSECT SELECT x FROM c)x)x ORDER BY x", \$handle);
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";;
echo "<br>n";

\$result=mysql_query("SELECT x FROM (SELECT x FROM (SELECT x FROM a UNION SELECT x FROM c)x INTERSECT SELECT x FROM b) x ORDER BY x", \$handle);
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";;
echo "<br>n";

\$result=mysql_query("SELECT x FROM (SELECT x FROM (SELECT x FROM a INTERSECT SELECT x FROM b)x UNION SELECT x FROM (SELECT x FROM c INTERSECT SELECT x FROM b)x)x ORDER BY x", \$handle);
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";;
echo "<br>n";

\$result=mysql_query("SELECT x FROM (SELECT x FROM (SELECT x FROM b UNION SELECT x FROM c)x INTERSECT SELECT x FROM a)x ORDER BY x", \$handle);
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";;
echo "<br>n";

\$result=mysql_query("SELECT x FROM (SELECT x FROM (SELECT x FROM b INTERSECT SELECT x FROM a)x UNION SELECT x FROM (SELECT x FROM c INTERSECT SELECT x FROM a)x)x ORDER BY x", \$handle);
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";;
echo "<br>n";

?>

033/quantitysql.php
<?php
include ('/home/david/mysqldata.php');

\$handle = mysql_connect ("127.0.0.1", \$MYSQL_NAME, \$MYSQL_PASSWORD);

mysql_select_db ("test034", \$handle);

mysql_query ("INSERT INTO def VALUES ("002", "002")", \$handle);

\$result = mysql_query ("SELECT * FROM abc JOIN def", \$handle);
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["name1"] . " " . \$row ["name2"] . " " . \$row ["name3"] . " " . \$row ["name4"] . "<br>n";
\$result = mysql_query ("SELECT * FROM abc LEFT JOIN def ON abc.name1 = def.name3", \$handle);
while (\$row = mysql_fetch_row (\$result))
    echo \$row [0] . " " . \$row [1] . " " . \$row [2] . " " . \$row [3] . "<br>n";
mysql_close (\$handle);
?>
034/database.php
<?php
session_start ();
?>

<form method="GET" action="./form1.php">
<input type="password" name="password1"></input>
<input type="submit"></input>
</form>

<?php
echo session_id () . "<br>n";

echo htmlentities (\$_GET ["password1"]) . "<br>n";
echo htmlentities (\$_COOKIE ["Cookie34"]) . "<br>n";
echo htmlentities (\$_COOKIE ["Cookie34a"]) . "<br>n";
?>
034/form1.php
GET /034/form1.php?password1=HALLO_DAS_IST_DAS_PASSWORT HTTP/1.1
host: localhost
Cookie: Cookie34=DIES_IST_DAS_COOKIE
034/httprequest01.txt
david@intel-compute-stick:~\$ mysql -u root -p
Enter password:
Welcome to the MariaDB monitor.  Commands end with ; or g.
Your MariaDB connection id is 1781
Server version: 10.5.12-MariaDB-0+deb11u1 Debian 11

Copyright (c) 2000, 2018, Oracle, MariaDB Corporation Ab and others.

Type 'help;' or 'h' for help. Type 'c' to clear the current input statement.

MariaDB [(none)]> CREATE DABASE test034;
ERROR 1064 (42000): You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near 'DABASE test034' at line 1
MariaDB [(none)]> CREATE DATABASE test034;
Query OK, 1 row affected (0.028 sec)

MariaDB [(none)]> USE test034;
Database changed
MariaDB [test034]> CREATE TABLE abc (name1 VARCHAR (32), name2 VARCHAR (32));
Query OK, 0 rows affected (0.123 sec)

MariaDB [test034]> CREATE TABLE def (name3 VARCHAR (32), name4 VARCHAR (32));
Query OK, 0 rows affected (0.056 sec)

MariaDB [test034]> INSERT INTO abc VALUES ("001", "001");
Query OK, 1 row affected (0.042 sec)

MariaDB [test034]> INSERT INTO abc VALUES ("001", "002");
Query OK, 1 row affected (0.027 sec)

MariaDB [test034]> INSERT INTO abc VALUES ("002", "001");
Query OK, 1 row affected (0.032 sec)

MariaDB [test034]> INSERT INTO abc VALUES ("002", "002");
Query OK, 1 row affected (0.029 sec)

MariaDB [test034]> INSERT INTO def VALUES ("001", "001");
Query OK, 1 row affected (0.033 sec)

MariaDB [test034]> INSERT INTO def VALUES ("001", "002");
Query OK, 1 row affected (0.034 sec)

MariaDB [test034]> INSERT INTO def VALUES ("abc", "def");
Query OK, 1 row affected (0.033 sec)

MariaDB [test034]> SELECT * FROM abc JOIN def;
+-------+-------+-------+-------+
| name1 | name2 | name3 | name4 |
+-------+-------+-------+-------+
| 001   | 001   | 001   | 001   |
| 001   | 001   | 001   | 002   |
| 001   | 001   | abc   | def   |
| 001   | 002   | 001   | 001   |
| 001   | 002   | 001   | 002   |
| 001   | 002   | abc   | def   |
| 002   | 001   | 001   | 001   |
| 002   | 001   | 001   | 002   |
| 002   | 001   | abc   | def   |
| 002   | 002   | 001   | 001   |
| 002   | 002   | 001   | 002   |
| 002   | 002   | abc   | def   |
+-------+-------+-------+-------+
12 rows in set (0.002 sec)

MariaDB [test034]> SELECT * FROM abc;
+-------+-------+
| name1 | name2 |
+-------+-------+
| 001   | 001   |
| 001   | 002   |
| 002   | 001   |
| 002   | 002   |
+-------+-------+
4 rows in set (0.001 sec)

MariaDB [test034]> SELECT * FROM def;
+-------+-------+
| name3 | name4 |
+-------+-------+
| 001   | 001   |
| 001   | 002   |
| abc   | def   |
+-------+-------+
3 rows in set (0.001 sec)

MariaDB [test034]> SELECT * FROM abc WHERE name="001";
ERROR 1054 (42S22): Unknown column 'name' in 'where clause'
MariaDB [test034]> SELECT * FROM abc WHERE name1="001";
+-------+-------+
| name1 | name2 |
+-------+-------+
| 001   | 001   |
| 001   | 002   |
+-------+-------+
2 rows in set (0.001 sec)

MariaDB [test034]> SELECT * FROM abc INNER JOIN def ON abc.name1 = def.name3;
+-------+-------+-------+-------+
| name1 | name2 | name3 | name4 |
+-------+-------+-------+-------+
| 001   | 001   | 001   | 001   |
| 001   | 001   | 001   | 002   |
| 001   | 002   | 001   | 001   |
| 001   | 002   | 001   | 002   |
+-------+-------+-------+-------+
4 rows in set (0.030 sec)

MariaDB [test034]> SELECT * FROM abc LEFT JOIN def ON abc.name1 = def.name3;
+-------+-------+-------+-------+
| name1 | name2 | name3 | name4 |
+-------+-------+-------+-------+
| 001   | 001   | 001   | 001   |
| 001   | 002   | 001   | 001   |
| 001   | 001   | 001   | 002   |
| 001   | 002   | 001   | 002   |
| 002   | 001   | NULL  | NULL  |
| 002   | 002   | NULL  | NULL  |
+-------+-------+-------+-------+
6 rows in set (0.028 sec)

MariaDB [test034]> SELECT * FROM abc RIGHT JOIN def ON abc.name2 = def.name4;
+-------+-------+-------+-------+
| name1 | name2 | name3 | name4 |
+-------+-------+-------+-------+
| 001   | 001   | 001   | 001   |
| 001   | 002   | 001   | 002   |
| 002   | 001   | 001   | 001   |
| 002   | 002   | 001   | 002   |
| NULL  | NULL  | abc   | def   |
+-------+-------+-------+-------+
5 rows in set (0.002 sec)

MariaDB [test034]> QUIT
Bye
david@intel-compute-stick:~\$

034/output01.txt
001 001 001 001<br>
001 002 001 001<br>
002 001 001 001<br>
002 002 001 001<br>
001 001 001 002<br>
001 002 001 002<br>
002 001 001 002<br>
002 002 001 002<br>
001 001 abc def<br>
001 002 abc def<br>
002 001 abc def<br>
002 002 abc def<br>
001 001 002 002<br>
001 002 002 002<br>
002 001 002 002<br>
002 002 002 002<br>
001 001 002 002<br>
001 002 002 002<br>
002 001 002 002<br>
002 002 002 002<br>
001 001 001 001<br>
001 002 001 001<br>
001 001 001 002<br>
001 002 001 002<br>
002 001 002 002<br>
002 002 002 002<br>
002 001 002 002<br>
002 002 002 002<br>
034/output02.txt
david@intel-compute-stick:/var/www/html/034\$ telnet 127.0.0.1 80
Trying 127.0.0.1...
Connected to 127.0.0.1.
Escape character is '\^]'.
GET /034/form1.php?password1=HALLO_DAS_IST_DAS_PASSWORT HTTP/1.1
host: localhost
Cookie: Cookie34=DIES_IST_DAS_COOKIE

HTTP/1.1 200 OK
Date: Thu, 28 Apr 2022 16:33:02 GMT
Server: Apache/2.4.52 (Debian)
Set-Cookie: PHPSESSID=thp685rma0b9l6u38bnb6j1ov2; path=/
Expires: Thu, 19 Nov 1981 08:52:00 GMT
Cache-Control: no-store, no-cache, must-revalidate, post-check=0, pre-check=0
Pragma: no-cache
Vary: Accept-Encoding
Content-Length: 221
Content-Type: text/html; charset=UTF-8


<form method="GET" action="./form1.php">
<input type="password" name="password1"></input>
<input type="submit"></input>
</form>

thp685rma0b9l6u38bnb6j1ov2<br>
HALLO_DAS_IST_DAS_PASSWORT<br>
DIES_IST_DAS_COOKIE<br>
<br>
Connection closed by foreign host.
david@intel-compute-stick:/var/www/html/034\$

034/output03.txt
14<br>
29<br>
3<br>
30<br>
38<br>
48<br>
49<br>
<br><br>

1<br>
11<br>
12<br>
14<br>
27<br>
30<br>
49<br>
<br><br>

14<br>
30<br>
35<br>
41<br>
49<br>
51<br>
62<br>
<br><br>

1<br>
11<br>
12<br>
13<br>
14<br>
17<br>
18<br>
23<br>
25<br>
27<br>
29<br>
3<br>
30<br>
31<br>
33<br>
35<br>
38<br>
4<br>
41<br>
48<br>
49<br>
5<br>
51<br>
61<br>
62<br>
<br><br>

1<br>
11<br>
12<br>
13<br>
14<br>
20<br>
24<br>
27<br>
29<br>
3<br>
30<br>
31<br>
33<br>
35<br>
36<br>
38<br>
4<br>
41<br>
42<br>
47<br>
48<br>
49<br>
50<br>
51<br>
52<br>
60<br>
62<br>
<br><br>

1<br>
11<br>
12<br>
14<br>
17<br>
18<br>
20<br>
23<br>
24<br>
25<br>
27<br>
29<br>
3<br>
30<br>
35<br>
36<br>
38<br>
41<br>
42<br>
47<br>
48<br>
49<br>
5<br>
50<br>
51<br>
52<br>
60<br>
61<br>
62<br>
<br><br>

1<br>
11<br>
12<br>
14<br>
27<br>
30<br>
35<br>
41<br>
49<br>
51<br>
62<br>
<br><br>

1<br>
11<br>
12<br>
14<br>
27<br>
30<br>
35<br>
41<br>
49<br>
51<br>
62<br>
<br><br>

14<br>
29<br>
3<br>
30<br>
35<br>
38<br>
41<br>
48<br>
49<br>
51<br>
62<br>
<br><br>

14<br>
29<br>
3<br>
30<br>
35<br>
38<br>
41<br>
48<br>
49<br>
51<br>
62<br>
<br><br>

1<br>
11<br>
12<br>
14<br>
27<br>
29<br>
3<br>
30<br>
38<br>
48<br>
49<br>
<br><br>

1<br>
11<br>
12<br>
14<br>
27<br>
29<br>
3<br>
30<br>
38<br>
48<br>
49<br>
<br><br>

034/output04.txt
<?php
include ('/home/david/mysqldata.php');

\$handle = mysql_connect ("127.0.0.1", \$MYSQL_NAME, \$MYSQL_PASSWORD);

mysql_query ("CREATE DATABASE quantity31", \$handle);

mysql_select_db ("quantity31", \$handle);

mysql_query ("CREATE TABLE a (x VARCHAR (4))", \$handle);
mysql_query ("CREATE TABLE b (x VARCHAR (4))", \$handle);
mysql_query ("CREATE TABLE c (x VARCHAR (4))", \$handle);

for (\$i = 0;  \$i < 20;  \$i++) {
    mysql_query ("INSERT INTO a VALUES ("". rand () % 64 . "")", \$handle);
    mysql_query ("INSERT INTO b VALUES ("". rand () % 64 . "")", \$handle);
    mysql_query ("INSERT INTO c VALUES ("". rand () % 64 . "")", \$handle);
}

/*
a AND b
a AND c
b AND c

a OR b
a OR c
b OR c

(a OR b) AND c = a AND c OR b AND c
(a OR c) AND b = a AND b OR c AND b
(b OR c) AND a = b AND a OR c AND a
*/



/*
a AND b
a AND c
b AND c

SELECT x FROM (SELECT x FROM a INTERSECT SELECT x FROM b) x ORDER BY x
SELECT x FROM (SELECT x FROM a INTERSECT SELECT x FROM c) x ORDER BY x
SELECT x FROM (SELECT x FROM b INTERSECT SELECT x FROM c) x ORDER BY x
*/

/*
a OR b
a OR c
b OR c

SELECT x FROM (SELECT x FROM a UNION SELECT x FROM b) x ORDER BY x
SELECT x FROM (SELECT x FROM a UNION SELECT x FROM c) x ORDER BY x
SELECT x FROM (SELECT x FROM b UNION SELECT x FROM c) x ORDER BY x
*/

/*(a OR b) AND c = a AND c OR b AND c

SELECT x FROM (
    SELECT x FROM (SELECT x FROM a UNION SELECT x FROM b)x
    INTERSECT
    SELECT x FROM c
) x ORDER BY x

SELECT x FROM (
    SELECT x FROM (SELECT x FROM a INTERSECT SELECT x FROM c)x
    UNION
    SELECT x FROM (SELECT x FROM b INTERSECT SELECT x FROM c)x
)x ORDER BY x


*/
/*(a OR c) AND b = a AND b OR c AND b

SELECT x FROM (
    SELECT x FROM (SELECT x FROM a UNION SELECT x FROM c)x
    INTERSECT
    SELECT x FROM b
) x ORDER BY x

SELECT x FROM (
    SELECT x FROM (SELECT x FROM a INTERSECT SELECT x FROM b)x
    UNION
    SELECT x FROM (SELECT x FROM c INTERSECT SELECT x FROM b)x
)x ORDER BY x

*/
/*(b OR c) AND a = b AND a OR c AND a

SELECT x FROM (
    SELECT x FROM (SELECT x FROM b UNION SELECT x FROM c)x
    INTERSECT
    SELECT x FROM a
) x ORDER BY x

SELECT x FROM (
    SELECT x FROM (SELECT x FROM b INTERSECT SELECT x FROM a) x
    UNION
    SELECT x FROM (SELECT x FROM c INTERSECT SELECT x FROM a) x
) x ORDER BY x
*/


\$result = mysql_query ("SELECT x FROM (SELECT x FROM a INTERSECT SELECT x FROM b) x ORDER BY x", \$handle);
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br><br>nn";
\$result = mysql_query ("SELECT x FROM (SELECT x FROM a INTERSECT SELECT x FROM c) x ORDER BY x", \$handle);
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br><br>nn";
\$result = mysql_query ("SELECT x FROM (SELECT x FROM b INTERSECT SELECT x FROM c) x ORDER BY x", \$handle);
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br><br>nn";
\$result = mysql_query ("SELECT x FROM (SELECT x FROM a UNION SELECT x FROM b) x ORDER BY x", \$handle);
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br><br>nn";
\$result = mysql_query ("SELECT x FROM (SELECT x FROM a UNION SELECT x FROM c) x ORDER BY x", \$handle);
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br><br>nn";
\$result = mysql_query ("SELECT x FROM (SELECT x FROM b UNION SELECT x FROM c) x ORDER BY x", \$handle);
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br><br>nn";

\$result = mysql_query ("SELECT x FROM (SELECT x FROM (SELECT x FROM a UNION SELECT x FROM b)x INTERSECT SELECT x FROM c) x ORDER BY x", \$handle);
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br><br>nn";

\$result = mysql_query ("SELECT x FROM (SELECT x FROM (SELECT x FROM a INTERSECT SELECT x FROM c)x UNION SELECT x FROM (SELECT x FROM b INTERSECT SELECT x FROM c)x)x ORDER BY x", \$handle);
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br><br>nn";

\$result = mysql_query ("SELECT x FROM (SELECT x FROM (SELECT x FROM a UNION SELECT x FROM c)x INTERSECT SELECT x FROM b) x ORDER BY x", \$handle);
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br><br>nn";

\$result = mysql_query ("SELECT x FROM (SELECT x FROM (SELECT x FROM a INTERSECT SELECT x FROM b)x UNION SELECT x FROM (SELECT x FROM c INTERSECT SELECT x FROM b)x)x ORDER BY x", \$handle);
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br><br>nn";

\$result = mysql_query ("SELECT x FROM (SELECT x FROM (SELECT x FROM b UNION SELECT x FROM c)x INTERSECT SELECT x FROM a) x ORDER BY x", \$handle);
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br><br>nn";

\$result = mysql_query ("SELECT x FROM (SELECT x FROM (SELECT x FROM b INTERSECT SELECT x FROM a) x UNION SELECT x FROM (SELECT x FROM c INTERSECT SELECT x FROM a) x) x ORDER BY x", \$handle);
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br><br>nn";

?>
034/sqlquantity.php
<?php
include ('/home/david/mysqldata.php');

\$handle = mysql_connect ("127.0.0.1", \$MYSQL_NAME, \$MYSQL_PASSWORD);

mysql_select_db ("test035", \$handle);

mysql_query ("INSERT INTO def VALUES ("002", "002")", \$handle);

\$result = mysql_query ("SELECT * FROM abc INNER JOIN def ON abc.name1= def.name3", \$handle);
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["name1"] . " " . \$row ["name2"] . " " . \$row ["name3"] . " " . \$row ["name4"] . "<br>n";

\$result = mysql_query ("SELECT * FROM abc LEFT JOIN def ON abc.name1 = def.name3", \$handle);
while (\$row = mysql_fetch_row (\$result))
    echo \$row [0] . " " . \$row [1] . " " . \$row [2] . " ". \$row [3] . "<br>n";

mysql_close (\$handle);
?>
035/database.php
<?php
session_start ();
?>

<form method="GET" action="./form1.php">
<input type="password" name="password1"></input>
<input type="submit"></input>
</form>

<?php
echo session_id ();

echo htmlentities (\$_GET ["password1"]);
echo htmlentities (\$_COOKIE ["Cookie35"]);
echo htmlentities (\$_COOKIE ["Cookie35a"]);
?>
035/form1.php
GET /035/form1.php?password1=DIES_IST_DAS_PASSWORT HTTP/1.1
host: localhost
Cookie: Cookie35a=DIES_IST_DAS_COOKIE
035/httprequest01.txt

035/output01.txt
001 001 001 002<br>
001 002 001 002<br>
001 001 001 001<br>
001 002 001 001<br>
002 001 002 002<br>
002 002 002 002<br>
002 001 002 002<br>
002 002 002 002<br>
001 001 001 002<br>
001 002 001 002<br>
001 001 001 001<br>
001 002 001 001<br>
002 001 002 002<br>
002 002 002 002<br>
002 001 002 002<br>
002 002 002 002<br>
035/output02.txt
david@intel-compute-stick:/var/www/html/035\$ telnet 127.0.0.1 80
Trying 127.0.0.1...
Connected to 127.0.0.1.
Escape character is '\^]'.
GET /035/form1.php?password1=DIES_IST_DAS_PASSWORT HTTP/1.1
host: localhost
Cookie: Cookie35a=DIES_IST_DAS_COOKIE

HTTP/1.1 200 OK
Date: Sun, 01 May 2022 18:27:39 GMT
Server: Apache/2.4.52 (Debian)
Set-Cookie: PHPSESSID=611hm3jjr3bh500atpsct2o916; path=/
Expires: Thu, 19 Nov 1981 08:52:00 GMT
Cache-Control: no-store, no-cache, must-revalidate, post-check=0, pre-check=0
Pragma: no-cache
Vary: Accept-Encoding
Content-Length: 196
Content-Type: text/html; charset=UTF-8


<form method="GET" action="./form1.php">
<input type="password" name="password1"></input>
<input type="submit"></input>
</form>

611hm3jjr3bh500atpsct2o916DIES_IST_DAS_PASSWORTDIES_IST_DAS_COOKIE
Connection closed by foreign host.
david@intel-compute-stick:/var/www/html/035\$

035/output03.txt
<br><br>

<br><br>

<br><br>

<br><br>

<br><br>

<br><br>

<br><br>

<br><br>

<br><br>

<br><br>

<br><br>

<br><br>

035/output04.txt
<?php
include ('/home/david/mysqldata.php');

\$handle = mysql_connect ("127.0.0.1", \$MYSQL_NAME, \$MYSQL_PASSWORD);

mysql_query ("CREATE DATABASE quantity035a", \$handle);

mysql_select_db ("quantity035a", \$handle);

mysql_query ("CREATE TABLE a (x VARCHAR (4))", \$handle);
mysql_query ("CREATE TABLE b (x VARCHAR (4))", \$handle);
mysql_query ("CREATE TABLE c (x VARCHAR (4))", \$handle);

for (\$i = 0;   \$i < 20;   \$i++) {
    mysql_query ("INSERT INTO a VALUES ("" . rand () % 64 . """, \$handle);
    mysql_query ("INSERT INTO b VALUES ("" . rand () % 64 . """, \$handle);
    mysql_query ("INSERT INTO c VALUES ("" . rand () % 64 . """, \$handle);

}

/*
a AND b
a AND c
b AND c
a OR b
a OR c
b OR c
(a OR b) AND c = a AND c OR b AND c
(a OR c) AND b = a AND b OR c AND b
(b OR c) AND a = b AND a OR c AND a
*/

/*
a AND b
a AND c
b AND c

SELECT x FROM (SELECT x FROM a INTERSECT SELECT x FROM b)x
SELECT x FROM (SELECT x FROM a INTERSECT SELECT x FROM c)x
SELECT x FROM (SELECT x FROM b INTERSECT SELECT x FROM c)x
*/

/*
a OR b
a OR c
b OR c

SELECT x FROM (SELECT x FROM a UNION SELECT x FROM b)x
SELECT x FROM (SELECT x FROM a UNION SELECT x FROM c)x
SELECT x FROM (SELECT x FROM b UNION SELECT x FROM c)x
*/

/*
(a OR b) AND c = a AND c OR b AND c
(a OR c) AND b = a AND b OR c AND b
(b OR c) AND a = b AND a OR c AND a

SELECT x FROM (
    SELECT x FROM (SELECT x FROM a UNION SELET x FROM b)x
    INTERSECT
    SELECT x FROM c
) x ORDER BY x

SELECT x FROM (
    SELECT x FROM (SELECT x FROM a INTERSECT SELECT x FROM c)x
    UNION
    SELECT x FROM (SELECT x FROM b INTERSECT SELECT x FROM c)x
) x ORDER BY x

(a OR c) AND b = a AND b OR c AND b

SELECT x FROM   (
    SELECT x FROM (SELECT x FROM a UNION SELECT x FROM c)x
    INTERSECT
    SELECT x FROM b
) x ORDER BY x

SELECT x FROM (
    SELECT x FROM (SELECT x FROM a INTERSECT SELECT x FROM b)x
    UNION
    SELECT x FROM (SELET x FROM c INTERESECT SELECT x FROM b)x
) x ORDER BY x


(b OR c) AND a = b AND a OR c AND a

SELECT x FROM (
    SELECT x FROM (SELECT x FROM b UNION SELECT x FROM c)x
    INTERESECT
    SELECT x FROM a
) x ORDER BY x

SELECT x FROM (
    SELECT x FROM (SELECT x FROM b INTERSECT SELECT x FROM a)x
    UNION
    SELECT x FROM (SELECT x FROM c INTERSECT SELECT x FROM a)x
) x ORDER BY x
*/


\$result = mysql_query ("SELECT x FROM (SELECT x FROM a INTERSECT SELECT x FROM b)x");
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br><br>nn";
\$result = mysql_query ("SELECT x FROM (SELECT x FROM a INTERSECT SELECT x FROM c)x");
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br><br>nn";
\$result = mysql_query ("SELECT x FROM (SELECT x FROM b INTERSECT SELECT x FROM c)x");
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br><br>nn";
\$result = mysql_query ("SELECT x FROM (SELECT x FROM a UNION SELECT x FROM b)x");
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br><br>nn";
\$result = mysql_query ("SELECT x FROM (SELECT x FROM a UNION SELECT x FROM c)x");
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br><br>nn";
\$result = mysql_query ("SELECT x FROM (SELECT x FROM b UNION SELECT x FROM c)x");
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br><br>nn";
\$result = mysql_query ("SELECT x FROM (SELECT x FROM (SELECT x FROM a UNION SELECT x FROM b)x INTERSECT SELECT x FROM c) x ORDER BY x");
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br><br>nn";

\$result = mysql_query ("SELECT x FROM (SELECT x FROM (SELECT x FROM a INTERSECT SELECT x FROM c)x UNION  SELECT x FROM (SELECT x FROM b INTERSECT SELECT x FROM c)x) x ORDER BY x");
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br><br>nn";

\$result = mysql_query ("SELECT x FROM   (SELECT x FROM (SELECT x FROM a UNION SELECT x FROM c)x INTERSECT SELECT x FROM b) x ORDER BY x");
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br><br>nn";

\$result = mysql_query ("SELECT x FROM (SELECT x FROM (SELECT x FROM a INTERSECT SELECT x FROM b)x UNION SELECT x FROM (SELECT x FROM c INTERSECT SELECT x FROM b)x) x ORDER BY x");
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br><br>nn";

\$result = mysql_query ("SELECT x FROM (SELECT x FROM (SELECT x FROM b UNION SELECT x FROM c)x INTERSECT SELECT x FROM a) x ORDER BY x");
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br><br>nn";

\$result = mysql_query ("SELECT x FROM (SELECT x FROM (SELECT x FROM b INTERSECT SELECT x FROM a)x UNION SELECT x FROM (SELECT x FROM c INTERSECT SELECT x FROM a)x) x ORDER BY x");
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br><br>nn";

mysql_close (\$handle);
?>
035/quantitysql.php
<?php
include ('/home/david/mysqldata.php');

\$handle = mysql_connect ("127.0.0.1", \$MYSQL_NAME, \$MYSQL_PASSWORD);

mysql_select_db ("test036", \$handle);

mysql_query ("INSERT INTO def VALUES ("002", "001")", \$handle);

\$result = mysql_query ("SELECT * FROM abc INNER JOIN def ON abc.name1 = def.name3", \$handle);
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["name1"] . " " . \$row ["name2"] . " " . \$row ["name3"] . " " . \$row ["name4"] . "<br>n";
\$result = mysql_query ("SELECT * FROM abc LEFT JOIN def ON abc.name1 = def.name3", \$handle);
while (\$row = mysql_fetch_row (\$result))
    echo \$row [0] .  " " . \$row [1] . " " . \$row [2] . " " . \$row [3] . "<br>n";

mysql_close (\$handle);
?>
036/database.php
<?php
session_start ();
?>

<form method="GET" action="./form1.php">
<input type="password" name="password1"></input>
<input type="submit"></input>
</form>

<?php
echo session_id () . "<br>n";
setcookie ("Cookie36", "DIES IST DAS COOKIE", time () + 3600);

echo htmlentities (\$_GET ["password1"]) . "<br>n";
echo htmlentities (\$_COOKIE ["Cookie36"]) . "<br>n";
echo htmlentities (\$_COOKIE ["Cookie36a"]) . "<br>n";
?>
036/form1.php
GET /036/form1.php?password1=DIES_IST_DAS_PASSWORT HTTP/1.1
host: localhost
Cookie: Cookie36a=DIES_IST_DAS_COOKIE_36a
036/httprequest01.txt
david@intel-compute-stick:/var/www/html/035\$ mysql -u root -p
Enter password:
Welcome to the MariaDB monitor.  Commands end with ; or g.
Your MariaDB connection id is 1923
Server version: 10.5.12-MariaDB-0+deb11u1 Debian 11

Copyright (c) 2000, 2018, Oracle, MariaDB Corporation Ab and others.

Type 'help;' or 'h' for help. Type 'c' to clear the current input statement.

MariaDB [(none)]> CREATE DATABASE test036;
Query OK, 1 row affected (0.001 sec)

MariaDB [(none)]> USE test036
Database changed
MariaDB [test036]> CREATE TABLE abc (name1 VARCHAR (32), name2 VARCHAR (32));
Query OK, 0 rows affected (0.061 sec)

MariaDB [test036]> CREATE TABLE def (name3 VARCHAR (32), name4 VARCHAR (32));
Query OK, 0 rows affected (0.049 sec)

MariaDB [test036]> INSERT INTO abc VALUES ("001", "001");
Query OK, 1 row affected (0.034 sec)

MariaDB [test036]> INSERT INTO abc VALUES ("001", "002");
Query OK, 1 row affected (0.025 sec)

MariaDB [test036]> INSERT INTO abc VALUES ("002", "001");
Query OK, 1 row affected (0.028 sec)

MariaDB [test036]> INSERT INTO abc VALUES ("002", "002");
Query OK, 1 row affected (0.025 sec)

MariaDB [test036]> INSERT INTO def VALUES ("001", "001");
Query OK, 1 row affected (0.030 sec)

MariaDB [test036]> INSERT INTO def (name1, name2) VALUES ("001", "002");
ERROR 1054 (42S22): Unknown column 'name1' in 'field list'
MariaDB [test036]> INSERT INTO def (name3, name4) VALUES ("001", "002");
Query OK, 1 row affected (0.029 sec)

MariaDB [test036]> INSERT INTO def (name4, name3) VALUES ("abc", "def");
Query OK, 1 row affected (0.037 sec)

MariaDB [test036]> SELECT * FROM abc;
+-------+-------+
| name1 | name2 |
+-------+-------+
| 001   | 001   |
| 001   | 002   |
| 002   | 001   |
| 002   | 002   |
+-------+-------+
4 rows in set (0.001 sec)

MariaDB [test036]> SELECT * FROM def;
+-------+-------+
| name3 | name4 |
+-------+-------+
| 001   | 001   |
| 001   | 002   |
| def   | abc   |
+-------+-------+
3 rows in set (0.001 sec)

MariaDB [test036]> SELECT * FROM abc JOIN defM
    -> ;
ERROR 1146 (42S02): Table 'test036.defM' doesn't exist
MariaDB [test036]> SELECT * FROM abc JOIN def;
+-------+-------+-------+-------+
| name1 | name2 | name3 | name4 |
+-------+-------+-------+-------+
| 001   | 001   | 001   | 001   |
| 001   | 001   | 001   | 002   |
| 001   | 001   | def   | abc   |
| 001   | 002   | 001   | 001   |
| 001   | 002   | 001   | 002   |
| 001   | 002   | def   | abc   |
| 002   | 001   | 001   | 001   |
| 002   | 001   | 001   | 002   |
| 002   | 001   | def   | abc   |
| 002   | 002   | 001   | 001   |
| 002   | 002   | 001   | 002   |
| 002   | 002   | def   | abc   |
+-------+-------+-------+-------+
12 rows in set (0.001 sec)

MariaDB [test036]> SELECT * FROM abc INNER JOIN def ON abc.name1 = def.name3;
+-------+-------+-------+-------+
| name1 | name2 | name3 | name4 |
+-------+-------+-------+-------+
| 001   | 001   | 001   | 001   |
| 001   | 001   | 001   | 002   |
| 001   | 002   | 001   | 001   |
| 001   | 002   | 001   | 002   |
+-------+-------+-------+-------+
4 rows in set (0.002 sec)

MariaDB [test036]> SELECT * FROM abc RIGHT JOIN def ON abc.name1 = def.name3;
+-------+-------+-------+-------+
| name1 | name2 | name3 | name4 |
+-------+-------+-------+-------+
| 001   | 001   | 001   | 001   |
| 001   | 001   | 001   | 002   |
| 001   | 002   | 001   | 001   |
| 001   | 002   | 001   | 002   |
| NULL  | NULL  | def   | abc   |
+-------+-------+-------+-------+
5 rows in set (0.002 sec)

MariaDB [test036]> SELECT * FROM abc LEFT JOIN def ON abc.name1 = def.name3;
+-------+-------+-------+-------+
| name1 | name2 | name3 | name4 |
+-------+-------+-------+-------+
| 001   | 001   | 001   | 001   |
| 001   | 002   | 001   | 001   |
| 001   | 001   | 001   | 002   |
| 001   | 002   | 001   | 002   |
| 002   | 001   | NULL  | NULL  |
| 002   | 002   | NULL  | NULL  |
+-------+-------+-------+-------+
6 rows in set (0.002 sec)

MariaDB [test036]> quit
Bye
david@intel-compute-stick:/var/www/html/035\$

036/output01.txt
001 001 001 001<br>
001 002 001 001<br>
001 001 001 002<br>
001 002 001 002<br>
002 001 002 001<br>
002 002 002 001<br>
002 001 002 001<br>
002 002 002 001<br>
001 001 001 001<br>
001 002 001 001<br>
001 001 001 002<br>
001 002 001 002<br>
002 001 002 001<br>
002 002 002 001<br>
002 001 002 001<br>
002 002 002 001<br>
036/output02.txt
david@intel-compute-stick:/var/www/html/036\$ telnet 127.0.0.1 80
Trying 127.0.0.1...
Connected to 127.0.0.1.
Escape character is '\^]'.
GET /036/form1.php?password1=DIES_IST_DAS_PASSWORT HTTP/1.1
host: localhost
Cookie: Cookie36a=DIES_IST_DAS_COOKIE_36a

HTTP/1.1 200 OK
Date: Mon, 02 May 2022 15:30:01 GMT
Server: Apache/2.4.52 (Debian)
Set-Cookie: PHPSESSID=iqdt9pr3kk74u93pntjtoc95j6; path=/
Expires: Thu, 19 Nov 1981 08:52:00 GMT
Cache-Control: no-store, no-cache, must-revalidate, post-check=0, pre-check=0
Pragma: no-cache
Set-Cookie: Cookie36=DIES+IST+DAS+COOKIE; expires=Mon, 02-May-2022 16:30:02 GMT; Max-Age=3600
Vary: Accept-Encoding
Content-Length: 220
Content-Type: text/html; charset=UTF-8


<form method="GET" action="./form1.php">
<input type="password" name="password1"></input>
<input type="submit"></input>
</form>

iqdt9pr3kk74u93pntjtoc95j6<br>
DIES_IST_DAS_PASSWORT<br>
<br>
DIES_IST_DAS_COOKIE_36a<br>
036/output03.txt
28<br>
41<br>
51<br>
52<br>
<br>
14<br>
24<br>
49<br>
<br>
35<br>
40<br>
42<br>
62<br>
63<br>
<br>
11<br>
13<br>
14<br>
17<br>
19<br>
23<br>
24<br>
25<br>
28<br>
32<br>
35<br>
36<br>
38<br>
39<br>
4<br>
40<br>
41<br>
42<br>
46<br>
48<br>
49<br>
5<br>
50<br>
51<br>
52<br>
58<br>
59<br>
60<br>
62<br>
63<br>
9<br>
<br>
0<br>
11<br>
13<br>
14<br>
18<br>
19<br>
20<br>
23<br>
24<br>
25<br>
28<br>
3<br>
32<br>
35<br>
4<br>
40<br>
41<br>
42<br>
43<br>
49<br>
5<br>
50<br>
51<br>
52<br>
54<br>
55<br>
59<br>
62<br>
63<br>
7<br>
<br>
0<br>
14<br>
17<br>
18<br>
20<br>
24<br>
28<br>
3<br>
35<br>
36<br>
38<br>
39<br>
40<br>
41<br>
42<br>
43<br>
46<br>
48<br>
49<br>
51<br>
52<br>
54<br>
55<br>
58<br>
60<br>
62<br>
63<br>
7<br>
9<br>
<br>
14<br>
24<br>
35<br>
40<br>
42<br>
49<br>
62<br>
63<br>
<br>
14<br>
24<br>
35<br>
40<br>
42<br>
49<br>
62<br>
63<br>
<br>
28<br>
35<br>
40<br>
41<br>
42<br>
51<br>
52<br>
62<br>
63<br>
<br>
28<br>
35<br>
40<br>
41<br>
42<br>
51<br>
52<br>
62<br>
63<br>
<br>
14<br>
24<br>
28<br>
41<br>
49<br>
51<br>
52<br>
<br>
14<br>
24<br>
28<br>
41<br>
49<br>
51<br>
52<br>
<br>
036/output04.txt
<?php
include ('/home/david/mysqldata.php');

\$handle = mysql_connect ("127.0.0.1", \$MYSQL_NAME, \$MYSQL_PASSWORD);

mysql_query ("CREATE DATABASE quantity036", \$handle);
mysql_select_db ("quantity036", \$handle);

mysql_query ("CREATE TABLE a (x VARCHAR (4))", \$handle);
mysql_query ("CREATE TABLE b (x VARCHAR (4))", \$handle);
mysql_query ("CREATE TABLE c (x VARCHAR (4))", \$handle);

for (\$i = 0;  \$i < 20;  \$i++) {
    mysql_query ("INSERT INTO a VALUES ("" . rand () % 64 . "")", \$handle);
    mysql_query ("INSERT INTO b VALUES ("" . rand () % 64 . "")", \$handle);
    mysql_query ("INSERT INTO c VALUES ("" . rand () % 64 . "")", \$handle);
}

/*
a AND b
a AND c
b AND c
a OR b
b OR c
a OR c

(a OR b) AND c = a AND c OR b AND c
(a OR c) AND b = a AND b OR c AND b
(b OR c) AND a = b AND a OR c AND a

*/

/*
a AND b
a AND c
b AND c

SELECT x FROM (SELECT x FROM a INTERSECT SELECT x FROM b) x ORDER BY x;
SELECT x FROM (SELECT x FROM a INTERSECT SELECT x FROM c) x ORDER BY x;
SELECT x FROM (SELECT x FROM b INTERSECT SELECT x FROM c) x ORDER BY x;
*/

/*
a OR b
b OR c
a OR c

SELECT x FROM (SELECT x FROM a UNION SELECT x FROM b) x ORDER BY x;
SELECT x FROM (SELECT x FROM b UNION SELECT x FROM c) x ORDER BY x;
SELECT x FROM (SELECT x FROM a UNION SELECT x FROM c) x ORDER BY x;
*/

/*
(a OR b) AND c = a AND c OR b AND c

SELECT x FROM (
    SELECT x FROM (SELECT x FROM a UNION SELECT x FROM b)x
    INTERSECT
    SELECT x FROM c
) x ORDER BY x

SELECT x FROM (
    SELECT x FROM (SELECT x FROM a INTERSECT SELECT x FROM c)x
    UNION
    SELECT x FROM (SELECT x FROM b INTERSECT SELECT x FROM c)x
) x ORDER BY x
*/

/*
(a OR c) AND b = a AND b OR c AND b

SELECT x FROM (
    SELECT x FROM (SELECT x FROM a UNION SELECT x FROM c)x
    INTERSECT
    SELECT x FROM b
) x ORDER BY x

SELECT x FROM (
    SELECT x FROM (SELECT x FROM a INTERSECT SELECT x FROM b)x
    UNION
    SELECT x FROM (SELECT x FROM c INTERSECT SELECT x FROM b)x
) x ORDER BY x
*/

/*
(b OR c) AND a = b AND a OR c AND a

SELECT x FROM (
    SELECT x FROM (SELECT x FROM b UNION SELECT x FROM c)x
    INTERSECT
    SELECT x FROM a
) x ORDER BY x

SELECT x FROM (
    SELECT x FROM (SELECT x FROM b INTERSECT SELECT x FROM a)x
    UNION
    SELECT x FROM (SELECT x FROM c INTERSECT SELECT x FROM a)x
) x ORDER BY x
*/

\$result = mysql_query ("SELECT x FROM (SELECT x FROM a INTERSECT SELECT x FROM b) x ORDER BY x");
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br>n";
\$result = mysql_query ("SELECT x FROM (SELECT x FROM a INTERSECT SELECT x FROM c) x ORDER BY x");
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br>n";
\$result = mysql_query ("SELECT x FROM (SELECT x FROM b INTERSECT SELECT x FROM c) x ORDER BY x");
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br>n";

\$result = mysql_query ("SELECT x FROM (SELECT x FROM a UNION SELECT x FROM b) x ORDER BY x");
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br>n";
\$result = mysql_query ("SELECT x FROM (SELECT x FROM b UNION SELECT x FROM c) x ORDER BY x");
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br>n";
\$result = mysql_query ("SELECT x FROM (SELECT x FROM a UNION SELECT x FROM c) x ORDER BY x");
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br>n";


\$result = mysql_query ("SELECT x FROM (SELECT x FROM (SELECT x FROM a UNION SELECT x FROM b)x INTERSECT SELECT x FROM c) x ORDER BY x");
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br>n";

\$result = mysql_query ("SELECT x FROM (SELECT x FROM (SELECT x FROM a INTERSECT SELECT x FROM c)x UNION SELECT x FROM (SELECT x FROM b INTERSECT SELECT x FROM c)x) x ORDER BY x");
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br>n";

\$result = mysql_query ("SELECT x FROM (SELECT x FROM (SELECT x FROM a UNION SELECT x FROM c)x INTERSECT SELECT x FROM b) x ORDER BY x");
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br>n";

\$result = mysql_query ("SELECT x FROM (SELECT x FROM (SELECT x FROM a INTERSECT SELECT x FROM b)x UNION SELECT x FROM (SELECT x FROM c INTERSECT SELECT x FROM b)x) x ORDER BY x");
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br>n";

\$result = mysql_query ("SELECT x FROM (SELECT x FROM (SELECT x FROM b UNION SELECT x FROM c)x INTERSECT SELECT x FROM a) x ORDER BY x");
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br>n";

\$result = mysql_query ("SELECT x FROM (SELECT x FROM (SELECT x FROM b INTERSECT SELECT x FROM a)x UNION SELECT x FROM (SELECT x FROM c INTERSECT SELECT x FROM a)x) x ORDER BY x");
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br>n";

mysql_close (\$handle)

?>
036/quantitysql.php
<?php
include ('/home/david/mysqldata.php');

\$handle = mysql_connect ("127.0.0.1", \$MYSQL_NAME, \$MYSQL_PASSWORD);

mysql_select_db ("test037", \$handle);

mysql_query ("INSERT INTO def VALUES ("002", "002")", \$handle);

\$result = mysql_query ("SELECT * FROM abc INNER JOIN def ON abc.name1 = def.name3", \$handle);

while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["name1"] . " " . \$row ["name2"] . " " . \$row ["name3"] . " " . \$row ["name4"] . "<br>n";

\$result = mysql_query ("SELECT * FROM abc LEFT JOIN def ON abc.name1 = def.name3", \$handle);
while (\$row = mysql_fetch_row (\$result))
    echo \$row [0] . " " . \$row [1] . " " . \$row [2] . " " . \$row [3] . "<br>n";

mysql_close (\$handle);

?>
037/database.php
<?php
session_start ();
?>

<form method="GET" action="./form1.php">
<input name="password1" type="password"></input>
<input type="submit"></input>
</form>

<?php
echo session_id () . "<br>n";

setcookie ("Cookie37", "JA, JA, SUPER", time () + 3600);

echo htmlentities (\$_COOKIE ["Cookie37"]) . "<br>n";
echo htmlentities (\$_COOKIE ["Cookie37a"]) . "<br>n";
echo htmlentities (\$_GET ["password1"]) . "<br>n";
?>

037/form1.php
GET /037/form1.php?password1=NE_DAS HTTP/1.1
host: localhost
Cookie: Cookie37a=DAS_SELBE_WIE_IMMER
037/httprequest01.txt
david@intel-compute-stick:~\$ mysql -u root -p
Enter password:
Welcome to the MariaDB monitor.  Commands end with ; or g.
Your MariaDB connection id is 2025
Server version: 10.5.12-MariaDB-0+deb11u1 Debian 11

Copyright (c) 2000, 2018, Oracle, MariaDB Corporation Ab and others.

Type 'help;' or 'h' for help. Type 'c' to clear the current input statement.

MariaDB [(none)]> CREATE DATABASE test037;
Query OK, 1 row affected (0.040 sec)

MariaDB [(none)]> USE test037;
Database changed
MariaDB [test037]> CREATE TABLE abc (name1 VARCHAR (32), name2 VARCHAR (32));
Query OK, 0 rows affected (0.077 sec)

MariaDB [test037]> CREATE TABLE def (name3 VARCHAR (32), name4 VARCHAR (32));
Query OK, 0 rows affected (0.059 sec)

MariaDB [test037]> INSERT INTO abc VALUES ("001", "001");
Query OK, 1 row affected (0.031 sec)

MariaDB [test037]> INSERT INTO abc VALUES ("001", "002");
Query OK, 1 row affected (0.034 sec)

MariaDB [test037]> INSERT INTO abc (name2, name1) VALUES ("001", "002");
Query OK, 1 row affected (0.026 sec)

MariaDB [test037]> INSERT INTO abc (name1, name2) VALUES ("002", "002");
Query OK, 1 row affected (0.027 sec)

MariaDB [test037]> INSERT INTO def (name1, name2) VALUES ("001", "002");
ERROR 1054 (42S22): Unknown column 'name1' in 'field list'
MariaDB [test037]> INSERT INTO def (name3, name4) VALUES ("001", "002");
Query OK, 1 row affected (0.028 sec)

MariaDB [test037]> INSERT INTO def (name3, name4) VALUES ("001", "001");
Query OK, 1 row affected (0.026 sec)

MariaDB [test037]> INSERT INTO def (name3, name4) VALUES ("abc", "def");
Query OK, 1 row affected (0.029 sec)

MariaDB [test037]> SELECT * FROM abc;
+-------+-------+
| name1 | name2 |
+-------+-------+
| 001   | 001   |
| 001   | 002   |
| 002   | 001   |
| 002   | 002   |
+-------+-------+
4 rows in set (0.030 sec)

MariaDB [test037]> SELECT * FROM abc JOIN def;
+-------+-------+-------+-------+
| name1 | name2 | name3 | name4 |
+-------+-------+-------+-------+
| 001   | 001   | 001   | 002   |
| 001   | 001   | 001   | 001   |
| 001   | 001   | abc   | def   |
| 001   | 002   | 001   | 002   |
| 001   | 002   | 001   | 001   |
| 001   | 002   | abc   | def   |
| 002   | 001   | 001   | 002   |
| 002   | 001   | 001   | 001   |
| 002   | 001   | abc   | def   |
| 002   | 002   | 001   | 002   |
| 002   | 002   | 001   | 001   |
| 002   | 002   | abc   | def   |
+-------+-------+-------+-------+
12 rows in set (0.001 sec)

MariaDB [test037]> SELECT * FROM def;
+-------+-------+
| name3 | name4 |
+-------+-------+
| 001   | 002   |
| 001   | 001   |
| abc   | def   |
+-------+-------+
3 rows in set (0.001 sec)

MariaDB [test037]> SELECT * FROM abc INNER JOIN def ON abc.name1 = def.name3;
+-------+-------+-------+-------+
| name1 | name2 | name3 | name4 |
+-------+-------+-------+-------+
| 001   | 001   | 001   | 002   |
| 001   | 001   | 001   | 001   |
| 001   | 002   | 001   | 002   |
| 001   | 002   | 001   | 001   |
+-------+-------+-------+-------+
4 rows in set (0.002 sec)

MariaDB [test037]> SELECT * FROM abc LEFT JOIN def ON abc.name2 = def.name4;
+-------+-------+-------+-------+
| name1 | name2 | name3 | name4 |
+-------+-------+-------+-------+
| 001   | 002   | 001   | 002   |
| 002   | 002   | 001   | 002   |
| 001   | 001   | 001   | 001   |
| 002   | 001   | 001   | 001   |
+-------+-------+-------+-------+
4 rows in set (0.002 sec)

MariaDB [test037]> SELECT * FROM abc RIGHT JOIN def ON abc.name3 = def.name4;
ERROR 1054 (42S22): Unknown column 'abc.name3' in 'on clause'
MariaDB [test037]> SELECT * FROM abc RIGHT JOIN def ON abc.name1 = def.name4;
+-------+-------+-------+-------+
| name1 | name2 | name3 | name4 |
+-------+-------+-------+-------+
| 001   | 001   | 001   | 001   |
| 001   | 002   | 001   | 001   |
| 002   | 001   | 001   | 002   |
| 002   | 002   | 001   | 002   |
| NULL  | NULL  | abc   | def   |
+-------+-------+-------+-------+
5 rows in set (0.002 sec)

MariaDB [test037]> quit
Bye
david@intel-compute-stick:~\$

037/output01.txt
001 001 001 002<br>
001 002 001 002<br>
001 001 001 001<br>
001 002 001 001<br>
002 001 002 002<br>
002 002 002 002<br>
002 001 002 002<br>
002 002 002 002<br>
001 001 001 002<br>
001 002 001 002<br>
001 001 001 001<br>
001 002 001 001<br>
002 001 002 002<br>
002 002 002 002<br>
002 001 002 002<br>
002 002 002 002<br>
037/output02.txt
david@intel-compute-stick:/var/www/html/037\$ telnet 127.0.0.1 80
Trying 127.0.0.1...
Connected to 127.0.0.1.
Escape character is '\^]'.
GET /037/form1.php?password1=NE_DAS HTTP/1.1
host: localhost
Cookie: Cookie37a=DAS_SELBE_WIE_IMMER

HTTP/1.1 200 OK
Date: Wed, 04 May 2022 16:01:35 GMT
Server: Apache/2.4.52 (Debian)
Set-Cookie: PHPSESSID=6go2fu1sieta473ccqlp2im3l1; path=/
Expires: Thu, 19 Nov 1981 08:52:00 GMT
Cache-Control: no-store, no-cache, must-revalidate, post-check=0, pre-check=0
Pragma: no-cache
Set-Cookie: Cookie37=JA%2C+JA%2C+SUPER; expires=Wed, 04-May-2022 17:01:36 GMT; Max-Age=3600
Vary: Accept-Encoding
Content-Length: 202
Content-Type: text/html; charset=UTF-8


<form method="GET" action="./form1.php">
<input name="password1" type="password"></input>
<input type="submit"></input>
</form>

6go2fu1sieta473ccqlp2im3l1<br>
<br>
DAS_SELBE_WIE_IMMER<br>
NE_DAS<br>

037/output03.txt
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037/output04.txt
<?php
include ('/home/david/mysqldata.php');

\$handle = mysql_connect ("127.0.0.1", \$MYSQL_NAME, \$MYSQL_PASSWORD);

mysql_query ("CREATE DATABASE quantity037", \$handle);

mysql_select_db ("quantity037", \$handle);

mysql_query ("CREATE TABLE a (x VARCHAR (4))", \$handle);
mysql_query ("CREATE TABLE b (x VARCHAR (4))", \$handle);
mysql_query ("CREATE TABLE c (x VARCHAR (4))", \$handle);

for (\$i = 0;  \$i < 20;  \$i++) {
    mysql_query ("INSERT INTO a VALUES ("" . rand () % 64 . "")", \$handle);
    mysql_query ("INSERT INTO b VALUES ("" . rand () % 64 . "")", \$handle);
    mysql_query ("INSERT INTO c VALUES ("" . rand () % 64 . "")", \$handle);
}

/*
a OR b
a OR c
b OR c

a AND b
a AND c
b AND c

(a OR b) AND c = a AND c OR b AND c
(a OR c) AND b = a AND b OR c AND b
(b OR c) AND a = b AND a OR c AND a
*/

/*
a OR b
a OR c
b OR c

a AND b
a AND c
b AND c

(a OR b) AND c = a AND c OR b AND c
(a OR c) AND b = a AND b OR c AND b
(b OR c) AND a = b AND a OR c AND a
*/

/*
a OR b
a OR c
b OR c

SELECT x FROM (SELECT x FROM a UNION SELECT x FROM b)x ORDER BY x
SELECT x FROM (SELECT x FROM a UNION SELECT x FROM c)x ORDER BY x
SELECT x FROM (SELECT x FROM b UNION SELECT x FROM c)x ORDER BY x
*/

/*
a AND b
a AND c
b AND c

SELECT x FROM (SELECT x FROM a INTERSECT SELECT x FROM b)x ORDER BY x
SELECT x FROM (SELECT x FROM a INTERSECT SELECT x FROM c)x ORDER BY x
SELECT x FROM (SELECT x FROM b INTERSECT SELECT x FROM c)x ORDER BY x
*/

/*
(a OR b) AND c = a AND c OR b AND c

SELECT x FROM (
    SELECT x FROM (SELECT x FROM a UNION SELECT x FROM b)x
    INTERSECT
    SELECT x FROM c
)x ORDER BY x

SELECT x FROM (
    SELECT x FROM (SELECT x FROM a INTERSECT SELECT x FROM c)x
    UNION
    SELECT x FROM (SELECT x FROM b INTERSECT SELECT x FROM c)x
)x ORDER BY x
*/

/*
(a OR c) AND b = a AND b OR c AND b

SELECT x FROM (
    SELECT x FROM (SELECT x FROM a UNION SELECT x FROM c)x
    INTERSECT
    SELECT x FROM b
) x ORDER BY x

SELECT x FROM (
    SELECT x FROM (SELECT x FROM b INTERSECT SELECT x FROM b)x
    UNION
    SELECT x FROM (SELECT x FROM c INTERSECT SELECT x FROM b)x
) x ORDER BY x
*/

/*
(b OR c) AND a = b AND a OR c AND a

SELECT x FROM (
    SELECT x FROM (SELECT x FROM b UNION SELECT x FROM c) x
    INTERSECT
    SELECT x FROM a
) x ORDER BY x

SELECT x FROM (
    SELECT x FROM (SELECT x FROM b INTERSECT SELECT x FROM a)x
    UNION
    SELECT x FROM (SELECT x FROM c INTERSECT SELECT x FROM a)x
) x ORDER BY x
*/


\$result = mysql_query("SELECT x FROM (SELECT x FROM a UNION SELECT x FROM b)x ORDER BY x", \$handle);
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br>n";
\$result = mysql_query("SELECT x FROM (SELECT x FROM a UNION SELECT x FROM c)x ORDER BY x", \$handle);
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br>n";
\$result = mysql_query("SELECT x FROM (SELECT x FROM b UNION SELECT x FROM c)x ORDER BY x", \$handle);
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br>n";

\$result = mysql_query("SELECT x FROM (SELECT x FROM a INTERSECT SELECT x FROM b)x ORDER BY x", \$handle);
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br>n";
\$result = mysql_query("SELECT x FROM (SELECT x FROM a INTERSECT SELECT x FROM c)x ORDER BY x", \$handle);
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br>n";
\$result = mysql_query("SELECT x FROM (SELECT x FROM b INTERSECT SELECT x FROM c)x ORDER BY x", \$handle);
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br>n";

\$result = mysql_query("SELECT x FROM (SELECT x FROM (SELECT x FROM a UNION SELECT x FROM b)x INTERSECT SELECT x FROM c)x ORDER BY x", \$handle);
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br>n";

\$result = mysql_query("SELECT x FROM (SELECT x FROM (SELECT x FROM a INTERSECT SELECT x FROM c)x UNION SELECT x FROM (SELECT x FROM b INTERSECT SELECT x FROM c)x)x ORDER BY x", \$handle);
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br>n";

\$result = mysql_query("SELECT x FROM (SELECT x FROM (SELECT x FROM a UNION SELECT x FROM c)x INTERSECT SELECT x FROM b) x ORDER BY x", \$handle);
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br>n";

\$result = mysql_query("SELECT x FROM (SELECT x FROM (SELECT x FROM b INTERSECT SELECT x FROM b)x UNION SELECT x FROM (SELECT x FROM c INTERSECT SELECT x FROM b)x) x ORDER BY x", \$handle);
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br>n";

\$result = mysql_query("SELECT x FROM (SELECT x FROM (SELECT x FROM b UNION SELECT x FROM c) x INTERSECT SELECT x FROM a) x ORDER BY x", \$handle);
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br>n";

\$result = mysql_query("SELECT x FROM (SELECT x FROM (SELECT x FROM b INTERSECT SELECT x FROM a)x UNION SELECT x FROM (SELECT x FROM c INTERSECT SELECT x FROM a)x) x ORDER BY x", \$handle);
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br>n";

mysql_close (\$handle);

?>
037/quantitysql.php
<?php
include ('/home/david/mysqldata.php');

\$handle = mysql_connect ("127.0.0.1", \$MYSQL_NAME, \$MYSQL_PASSWORD);

mysql_select_db ("test038", \$handle);

mysql_query ("INSERT INTO def VALUES ("002", "002")", \$handle);

\$result = mysql_query ("SELECT * FROM abc INNER JOIN def ON abc.name1 = def.name3", \$handle);
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["name1"] . " " . \$row ["name2"] . " " . \$row ["name3"] . " " . \$row ["name4"] . "<br>n";
\$result = mysql_query ("SELECT * FROM abc LEFT JOIN def ON abc.name2 = def.name4", \$handle);
while (\$row = mysql_fetch_row (\$result))
    echo \$row [0] . " " . \$row [1] . " " . \$row [2] . " " . \$row [3] . "<br>n";
mysql_close (\$handle);

?>
038/database.php
<?php
session_start ();
?>

<form method="GET" action="./form1.php">
<input type="password" name="password1"></input>
<input type="submit"></input>
</form>

<?php
echo session_id ();

echo htmlentities (\$_GET ["password1"]) . "<br>n";

setcookie ("Cookie38", "DIES_IST_EIN_COOKIE", time () + 3600);

echo htmlentities (\$_COOKIE ["Cookie38"]) . "<br>n";
echo htmlentities (\$_COOKIE ["Cookie38a"]) . "<br>n";
?>
038/form1.php
GET /038/form1.php?password1=DIES_IST_EIN_PASSWORT HTTP/1.1
host: localhost
Cookie: Cookie38a=HALLO_DIES_IST_COOKIE
038/httprequest01.txt
david@intel-compute-stick:/var/www/html/037\$ mysql -u root -p
Enter password:
Welcome to the MariaDB monitor.  Commands end with ; or g.
Your MariaDB connection id is 2116
Server version: 10.5.12-MariaDB-0+deb11u1 Debian 11

Copyright (c) 2000, 2018, Oracle, MariaDB Corporation Ab and others.

Type 'help;' or 'h' for help. Type 'c' to clear the current input statement.

MariaDB [(none)]> CREATE DATABASE test038;
Query OK, 1 row affected (0.002 sec)

MariaDB [(none)]> USE test038;
Database changed
MariaDB [test038]> CREATE TABLE abc (name1 VARCHAR (32), name2 VARCHAR (32));
Query OK, 0 rows affected (0.055 sec)

MariaDB [test038]> CREATE TABLE def (name3 VARCHAR (32), name4 VARCHAR (32));
Query OK, 0 rows affected (0.054 sec)

MariaDB [test038]> INSERT INTO abc VALUES ("001", "001");
Query OK, 1 row affected (0.030 sec)

MariaDB [test038]> INSERT INTO abc VALUES ("001", "002");
Query OK, 1 row affected (0.026 sec)

MariaDB [test038]> INSERT INTO abc (name1, name2) VALUES ("002", "001");
Query OK, 1 row affected (0.027 sec)

MariaDB [test038]> INSERT INTO abc (name2, name1) VALUES ("002", "002");
Query OK, 1 row affected (0.027 sec)

MariaDB [test038]> INSERT INTO def (name3, name4) VALUES ("001", "001");
Query OK, 1 row affected (0.029 sec)

MariaDB [test038]> INSERT INTO def (name3, name4) VALUES ("001", "002");
Query OK, 1 row affected (0.024 sec)

MariaDB [test038]> INSERT INTO def (name3, name4) VALUES ("abc", "def");
Query OK, 1 row affected (0.025 sec)

MariaDB [test038]> SELECT * FROM abc;
+-------+-------+
| name1 | name2 |
+-------+-------+
| 001   | 001   |
| 001   | 002   |
| 002   | 001   |
| 002   | 002   |
+-------+-------+
4 rows in set (0.001 sec)

MariaDB [test038]> SELECT * FROM def;
+-------+-------+
| name3 | name4 |
+-------+-------+
| 001   | 001   |
| 001   | 002   |
| abc   | def   |
+-------+-------+
3 rows in set (0.001 sec)

MariaDB [test038]> SELECT * FROM abc JOIN def;
+-------+-------+-------+-------+
| name1 | name2 | name3 | name4 |
+-------+-------+-------+-------+
| 001   | 001   | 001   | 001   |
| 001   | 001   | 001   | 002   |
| 001   | 001   | abc   | def   |
| 001   | 002   | 001   | 001   |
| 001   | 002   | 001   | 002   |
| 001   | 002   | abc   | def   |
| 002   | 001   | 001   | 001   |
| 002   | 001   | 001   | 002   |
| 002   | 001   | abc   | def   |
| 002   | 002   | 001   | 001   |
| 002   | 002   | 001   | 002   |
| 002   | 002   | abc   | def   |
+-------+-------+-------+-------+
12 rows in set (0.001 sec)

MariaDB [test038]> SELECT * FROM abc INNER JOIN def ON abc.name1 = def.name3;
+-------+-------+-------+-------+
| name1 | name2 | name3 | name4 |
+-------+-------+-------+-------+
| 001   | 001   | 001   | 001   |
| 001   | 001   | 001   | 002   |
| 001   | 002   | 001   | 001   |
| 001   | 002   | 001   | 002   |
+-------+-------+-------+-------+
4 rows in set (0.002 sec)

MariaDB [test038]> SELECT * FROM abc LEFT JOIN def ON abc.name1 = def.name3;
+-------+-------+-------+-------+
| name1 | name2 | name3 | name4 |
+-------+-------+-------+-------+
| 001   | 001   | 001   | 001   |
| 001   | 002   | 001   | 001   |
| 001   | 001   | 001   | 002   |
| 001   | 002   | 001   | 002   |
| 002   | 001   | NULL  | NULL  |
| 002   | 002   | NULL  | NULL  |
+-------+-------+-------+-------+
6 rows in set (0.002 sec)

MariaDB [test038]> SELECT * FROM abc RIGHT JOIN def ON abc.name1 = def.name3;
+-------+-------+-------+-------+
| name1 | name2 | name3 | name4 |
+-------+-------+-------+-------+
| 001   | 001   | 001   | 001   |
| 001   | 001   | 001   | 002   |
| 001   | 002   | 001   | 001   |
| 001   | 002   | 001   | 002   |
| NULL  | NULL  | abc   | def   |
+-------+-------+-------+-------+
5 rows in set (0.002 sec)

MariaDB [test038]> quit
Bye
david@intel-compute-stick:/var/www/html/037\$

038/output01.txt
001 001 001 001<br>
001 002 001 001<br>
001 001 001 002<br>
001 002 001 002<br>
002 001 002 002<br>
002 002 002 002<br>
002 001 002 002<br>
002 002 002 002<br>
001 001 001 001<br>
002 001 001 001<br>
001 002 001 002<br>
002 002 001 002<br>
001 002 002 002<br>
002 002 002 002<br>
001 002 002 002<br>
002 002 002 002<br>
038/output02.txt
david@intel-compute-stick:/var/www/html/038\$ telnet 127.0.0.1 80
Trying 127.0.0.1...
Connected to 127.0.0.1.
Escape character is '\^]'.
GET /038/form1.php?password1=DIES_IST_EIN_PASSWORT HTTP/1.1
host: localhost
Cookie: Cookie38a=HALLO_DIES_IST_COOKIE

HTTP/1.1 200 OK
Date: Thu, 05 May 2022 16:44:57 GMT
Server: Apache/2.4.52 (Debian)
Set-Cookie: PHPSESSID=gaaijetnr3c17bm5uoi1m1a046; path=/
Expires: Thu, 19 Nov 1981 08:52:00 GMT
Cache-Control: no-store, no-cache, must-revalidate, post-check=0, pre-check=0
Pragma: no-cache
Set-Cookie: Cookie38=DIES_IST_EIN_COOKIE; expires=Thu, 05-May-2022 17:44:58 GMT; Max-Age=3600
Vary: Accept-Encoding
Content-Length: 213
Content-Type: text/html; charset=UTF-8


<form method="GET" action="./form1.php">
<input type="password" name="password1"></input>
<input type="submit"></input>
</form>

gaaijetnr3c17bm5uoi1m1a046DIES_IST_EIN_PASSWORT<br>
<br>
HALLO_DIES_IST_COOKIE<br>
038/output03.txt
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<br>

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20<br>
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23<br>
25<br>
26<br>
28<br>
30<br>
31<br>
32<br>
33<br>
34<br>
39<br>
41<br>
42<br>
43<br>
44<br>
47<br>
49<br>
54<br>
56<br>
58<br>
60<br>
62<br>
<br>

0<br>
2<br>
5<br>
6<br>
9<br>
16<br>
17<br>
19<br>
20<br>
21<br>
22<br>
24<br>
30<br>
33<br>
34<br>
36<br>
38<br>
39<br>
41<br>
42<br>
43<br>
44<br>
45<br>
47<br>
50<br>
51<br>
52<br>
56<br>
58<br>
60<br>
62<br>
<br>

6<br>
19<br>
34<br>
60<br>
<br>

19<br>
30<br>
34<br>
43<br>
58<br>
60<br>
<br>

9<br>
17<br>
19<br>
34<br>
44<br>
60<br>
<br>

9<br>
17<br>
19<br>
30<br>
34<br>
43<br>
44<br>
58<br>
60<br>
<br>

9<br>
17<br>
19<br>
30<br>
34<br>
43<br>
44<br>
58<br>
60<br>
<br>

6<br>
9<br>
17<br>
19<br>
34<br>
44<br>
60<br>
<br>

6<br>
9<br>
17<br>
19<br>
34<br>
44<br>
60<br>
<br>

6<br>
19<br>
30<br>
34<br>
43<br>
58<br>
60<br>
<br>

6<br>
19<br>
30<br>
34<br>
43<br>
58<br>
60<br>
<br>

038/output04.txt
<?php
include ('/home/david/mysqldata.php');

\$handle = mysql_connect ("127.0.0.1", \$MYSQL_NAME, \$MYSQL_PASSWORD);

mysql_query ("CREATE DATABASE quantity038a", \$handle);

mysql_select_db ("quantity038a", \$handle);

mysql_query ("CREATE TABLE a (x INTEGER)", \$handle);
mysql_query ("CREATE TABLE b (x INTEGER)", \$handle);
mysql_query ("CREATE TABLE c (x INTEGER)", \$handle);

for (\$i = 0;  \$i < 20;  \$i++) {
    mysql_query ("INSERT INTO a VALUES ("" . rand () % 64 . "")", \$handle);
    mysql_query ("INSERT INTO b VALUES ("" . rand () % 64 . "")", \$handle);
    mysql_query ("INSERT INTO c VALUES ("" . rand () % 64 . "")", \$handle);
}

/*
a OR b
a OR c
b OR c

SELECT x FROM (SELECT x FROM a UNION SELECT x FROM b)x ORDER BY x
SELECT x FROM (SELECT x FROM a UNION SELECT x FROM c)x ORDER BY x
SELECT x FROM (SELECT x FROM b UNION SELECT x FROM c)x ORDER BY x
*/

/*
a AND b
a AND c
b AND c

SELECT x FROM (SELECT x FROM a INTERSECT SELECT x FROM b) x ORDER BY x
SELECT x FROM (SELECT x FROM a INTERSECT SELECT x FROM c) x ORDER BY x
SELECT x FROM (SELECT x FROM b INTERSECT SELECT x FROM c) x ORDER BY x
*/

/*
(a OR b) AND c = a AND c OR b AND c

SELECT x FROM (
    SELECT x FROM (SELECT x FROM a UNION SELECT x FROM b) x
    INTERSECT
    SELECT x FROM c
) x ORDER BY x

SELECT x FROM (
    SELECT x FROM (SELECT x FROM a INTERSECT SELECT x FROM c) x
    UNION
    SELECT x FROM (SELECT x FROM b INTERSECT SELECT x FROM c) x
) x ORDER BY x
*/

/*
(a OR c) AND b = a AND b OR c AND b

SELECT x FROM (
    SELECT x FROM (SELECT x FROM a UNION SELECT x FROM c) x
    INTERSECT
    SELECT x FROM b
) x ORDER BY x

SELECT x FROM (
    SELECT x FROM (SELECT x FROM a INTERSECT SELECT x FROM b) x
    UNION
    SELECT x FROM (SELECT x FROM c INTERSECT SELECT x FROM b) x
) x ORDER BY x
*/

/*
(b OR c) AND a = b AND a OR c AND a

SELECT x FROM (
    SELECT x FROM (SELECT x FROM b UNION SELECT x FROM c) x
    INTERSECT
    SELECT x FROM a
) x ORDER BY x

SELECT x FROM (
    SELECT x FROM (SELECT x FROM b INTERSECT SELECT x FROM a) x
    UNION
    SELECT x FROM (SELECT x FROM c INTERSECT SELECT x FROM a) x
) x ORDER BY x
*/


\$result = mysql_query ("SELECT x FROM (SELECT x FROM a UNION SELECT x FROM b)x ORDER BY x");
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br>nn";
\$result = mysql_query ("SELECT x FROM (SELECT x FROM a UNION SELECT x FROM c)x ORDER BY x");
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br>nn";
\$result = mysql_query ("SELECT x FROM (SELECT x FROM b UNION SELECT x FROM c)x ORDER BY x" );
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br>nn";
\$result = mysql_query ("SELECT x FROM (SELECT x FROM a INTERSECT SELECT x FROM b) x ORDER BY x");
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br>nn";
\$result = mysql_query ("SELECT x FROM (SELECT x FROM a INTERSECT SELECT x FROM c) x ORDER BY x");
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br>nn";
\$result = mysql_query ("SELECT x FROM (SELECT x FROM b INTERSECT SELECT x FROM c) x ORDER BY x");
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br>nn";
\$result = mysql_query ("SELECT x FROM (SELECT x FROM (SELECT x FROM a UNION SELECT x FROM b) x INTERSECT SELECT x FROM c) x ORDER BY x");
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br>nn";
\$result = mysql_query ("SELECT x FROM (SELECT x FROM (SELECT x FROM a INTERSECT SELECT x FROM c) x UNION SELECT x FROM (SELECT x FROM b INTERSECT SELECT x FROM c) x) x ORDER BY x");
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br>nn";
\$result = mysql_query ("SELECT x FROM (SELECT x FROM (SELECT x FROM a UNION SELECT x FROM c) x INTERSECT SELECT x FROM b) x ORDER BY x");
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br>nn";
\$result = mysql_query ("SELECT x FROM (SELECT x FROM (SELECT x FROM a INTERSECT SELECT x FROM b) x UNION SELECT x FROM (SELECT x FROM c INTERSECT SELECT x FROM b) x) x ORDER BY x");
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br>nn";
\$result = mysql_query ("SELECT x FROM (SELECT x FROM (SELECT x FROM b UNION SELECT x FROM c) x INTERSECT SELECT x FROM a) x ORDER BY x");
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br>nn";
\$result = mysql_query ("SELECT x FROM (SELECT x FROM (SELECT x FROM b INTERSECT SELECT x FROM a) x UNION SELECT x FROM (SELECT x FROM c INTERSECT SELECT x FROM a) x) x ORDER BY x");
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br>nn";


mysql_close (\$handle);
?>
038/quantitysql.php
<?php
include ('/home/david/mysqldata.php');

\$handle = mysql_connect ("127.0.0.1", \$MYSQL_NAME, \$MYSQL_PASSWORD);

mysql_select_db ("test039", \$handle);

mysql_query ("INSERT INTO def VALUES ("def", "abc")", \$handle);

\$result = mysql_query ("SELECT * FROM abc INNER JOIN def ON abc.name1 = def.name3", \$handle);
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["name1"] . " " . \$row ["name2"] . " " . \$row ["name3"] . " " . \$row ["name4"] . "<br>n";

\$result = mysql_query ("SELECT * FROM abc LEFT JOIN def ON abc.name1 = def.name3", \$handle);
while (\$row = mysql_fetch_row (\$result))
    echo \$row [0] . " " . \$row [1] . " " . \$row [2] . " " . \$row [3] . "<br>n";
mysql_close (\$handle);
?>
039/database.php
<?php
session_start ();
?>

<form method="GET" action="./form1.php">
<input type="password" name="password1"></input>
<input type="submit"></input>
</form>

<?php
echo session_id () . "<br>n";

setcookie ("Cookie39", "DIES_IST_COOKIE39", time () + 3600);

echo htmlentities (\$_GET ["password1"]) . "<br>n";

echo htmlentities (\$_COOKIE ["Cookie39"]) . "<br>n";
echo htmlentities (\$_COOKIE ["Cookie39a"]) . "<br>n";
?>
039/form1.php
GET /039/form1.php?password1=DIES_IST_PASSWORT_39 HTTP/1.1
host: localhost
Cookie: Cookie39=DIES_IST_COOKIE_39a
039/httprequest01.txt
david@intel-compute-stick:~\$ mysql -u root -p
Enter password:
Welcome to the MariaDB monitor.  Commands end with ; or g.
Your MariaDB connection id is 2186
Server version: 10.5.12-MariaDB-0+deb11u1 Debian 11

Copyright (c) 2000, 2018, Oracle, MariaDB Corporation Ab and others.

Type 'help;' or 'h' for help. Type 'c' to clear the current input statement.

MariaDB [(none)]> CREATE DATABASE test039;
Query OK, 1 row affected (0.031 sec)

MariaDB [(none)]> USE test039;
Database changed
MariaDB [test039]> CREATE TABLE abc (name1 VARCHAR (32), name2 VARCHAR (32));
Query OK, 0 rows affected (0.144 sec)

MariaDB [test039]> CREATE TABLE def (name3 VARCHAR (32), name4 VARCHAR (32));
Query OK, 0 rows affected (0.062 sec)

MariaDB [test039]> INSERT INTO abc VALUES ("001", "001");
Query OK, 1 row affected (0.046 sec)

MariaDB [test039]> INSERT INOT abc (name1, name2) VALUES ("001", "002");
ERROR 1064 (42000): You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near 'abc (name1, name2) VALUES ("001", "002")' at line 1
MariaDB [test039]> INSERT INTO abc (name1, name2) VALUES ("001", "002");
Query OK, 1 row affected (0.031 sec)

MariaDB [test039]> INSERT INTO abc (name1, name2) VALUES ("002", "001");
Query OK, 1 row affected (0.034 sec)

MariaDB [test039]> INSERT INTO abc (name2, name1) VALUES ("002", "002");
Query OK, 1 row affected (0.028 sec)

MariaDB [test039]> INSERT INTO def (name3, name4) VALUES ("001", "001");
Query OK, 1 row affected (0.038 sec)

MariaDB [test039]> INSERT INTO def (name4, name3) VALUES ("002", "001");
Query OK, 1 row affected (0.035 sec)

MariaDB [test039]> INSERT INTO def VALUES ("002", "002");
Query OK, 1 row affected (0.030 sec)

MariaDB [test039]> SELECT * FROM abc;
+-------+-------+
| name1 | name2 |
+-------+-------+
| 001   | 001   |
| 001   | 002   |
| 002   | 001   |
| 002   | 002   |
+-------+-------+
4 rows in set (0.001 sec)

MariaDB [test039]> SELECT * FROM def;
+-------+-------+
| name3 | name4 |
+-------+-------+
| 001   | 001   |
| 001   | 002   |
| 002   | 002   |
+-------+-------+
3 rows in set (0.001 sec)

MariaDB [test039]> SELECT * FROM abc JOIN def;
+-------+-------+-------+-------+
| name1 | name2 | name3 | name4 |
+-------+-------+-------+-------+
| 001   | 001   | 001   | 001   |
| 001   | 001   | 001   | 002   |
| 001   | 001   | 002   | 002   |
| 001   | 002   | 001   | 001   |
| 001   | 002   | 001   | 002   |
| 001   | 002   | 002   | 002   |
| 002   | 001   | 001   | 001   |
| 002   | 001   | 001   | 002   |
| 002   | 001   | 002   | 002   |
| 002   | 002   | 001   | 001   |
| 002   | 002   | 001   | 002   |
| 002   | 002   | 002   | 002   |
+-------+-------+-------+-------+
12 rows in set (0.028 sec)

MariaDB [test039]> SELECT * FROM abc INNER JOIN def ON abc.name1 = def.name3;
+-------+-------+-------+-------+
| name1 | name2 | name3 | name4 |
+-------+-------+-------+-------+
| 001   | 001   | 001   | 001   |
| 001   | 001   | 001   | 002   |
| 001   | 002   | 001   | 001   |
| 001   | 002   | 001   | 002   |
| 002   | 001   | 002   | 002   |
| 002   | 002   | 002   | 002   |
+-------+-------+-------+-------+
6 rows in set (0.032 sec)

MariaDB [test039]> SELECT * FROM abc LEFT JOIN def ON abc.name1 = def.name3;
+-------+-------+-------+-------+
| name1 | name2 | name3 | name4 |
+-------+-------+-------+-------+
| 001   | 001   | 001   | 001   |
| 001   | 002   | 001   | 001   |
| 001   | 001   | 001   | 002   |
| 001   | 002   | 001   | 002   |
| 002   | 001   | 002   | 002   |
| 002   | 002   | 002   | 002   |
+-------+-------+-------+-------+
6 rows in set (0.025 sec)

MariaDB [test039]> SELECT * FROM abc RIGHT JOIN def ON abc.name2 = def.name4;
+-------+-------+-------+-------+
| name1 | name2 | name3 | name4 |
+-------+-------+-------+-------+
| 001   | 001   | 001   | 001   |
| 001   | 002   | 001   | 002   |
| 001   | 002   | 002   | 002   |
| 002   | 001   | 001   | 001   |
| 002   | 002   | 001   | 002   |
| 002   | 002   | 002   | 002   |
+-------+-------+-------+-------+
6 rows in set (0.002 sec)

MariaDB [test039]> QUIT
Bye
david@intel-compute-stick:~\$

039/output01.txt
001 001 001 001<br>
001 002 001 001<br>
001 001 001 002<br>
001 002 001 002<br>
002 001 002 002<br>
002 002 002 002<br>
001 001 001 001<br>
001 002 001 001<br>
001 001 001 002<br>
001 002 001 002<br>
002 001 002 002<br>
002 002 002 002<br>
039/output02.txt
david@intel-compute-stick:/var/www/html/039\$ telnet 127.0.0.1 80
Trying 127.0.0.1...
Connected to 127.0.0.1.
Escape character is '\^]'.
GET /039/form1.php?password1=DIES_IST_PASSWORT_39 HTTP/1.1
host: localhost
Cookie: Cookie39=DIES_IST_COOKIE_39a

HTTP/1.1 200 OK
Date: Sat, 07 May 2022 14:30:37 GMT
Server: Apache/2.4.52 (Debian)
Set-Cookie: PHPSESSID=jrf3hv2rph95c7mta6oavhqsk1; path=/
Expires: Thu, 19 Nov 1981 08:52:00 GMT
Cache-Control: no-store, no-cache, must-revalidate, post-check=0, pre-check=0
Pragma: no-cache
Set-Cookie: Cookie39=DIES_IST_COOKIE39; expires=Sat, 07-May-2022 15:30:38 GMT; Max-Age=3600
Vary: Accept-Encoding
Content-Length: 215
Content-Type: text/html; charset=UTF-8


<form method="GET" action="./form1.php">
<input type="password" name="password1"></input>
<input type="submit"></input>
</form>

jrf3hv2rph95c7mta6oavhqsk1<br>
DIES_IST_PASSWORT_39<br>
DIES_IST_COOKIE_39a<br>
<br>
039/output03.txt
10<br>
49<br>
11<br>
44<br>
<br><br>

9<br>
53<br>
56<br>
46<br>
22<br>
2<br>
11<br>
<br><br>

16<br>
11<br>
<br><br>

30<br>
9<br>
3<br>
53<br>
10<br>
56<br>
46<br>
26<br>
52<br>
49<br>
0<br>
22<br>
59<br>
34<br>
8<br>
2<br>
27<br>
11<br>
28<br>
44<br>
16<br>
57<br>
13<br>
12<br>
45<br>
48<br>
20<br>
23<br>
15<br>
61<br>
60<br>
<br><br>

30<br>
9<br>
3<br>
53<br>
10<br>
56<br>
46<br>
26<br>
52<br>
49<br>
0<br>
22<br>
59<br>
34<br>
8<br>
2<br>
27<br>
11<br>
28<br>
44<br>
36<br>
39<br>
38<br>
58<br>
25<br>
47<br>
17<br>
16<br>
18<br>
24<br>
1<br>
40<br>
21<br>
<br><br>

16<br>
57<br>
13<br>
49<br>
44<br>
12<br>
45<br>
10<br>
48<br>
11<br>
20<br>
23<br>
15<br>
61<br>
60<br>
22<br>
36<br>
39<br>
38<br>
58<br>
25<br>
47<br>
17<br>
2<br>
18<br>
24<br>
9<br>
53<br>
1<br>
46<br>
56<br>
40<br>
21<br>
<br><br>

11<br>
16<br>
2<br>
22<br>
46<br>
53<br>
56<br>
9<br>
<br><br>

11<br>
16<br>
2<br>
22<br>
46<br>
53<br>
56<br>
9<br>
<br><br>

10<br>
11<br>
16<br>
44<br>
49<br>
<br><br>

10<br>
11<br>
16<br>
44<br>
49<br>
<br><br>

10<br>
11<br>
2<br>
22<br>
44<br>
46<br>
49<br>
53<br>
56<br>
9<br>
<br><br>

10<br>
11<br>
2<br>
22<br>
44<br>
46<br>
49<br>
53<br>
56<br>
9<br>
<br><br>


039/output04.txt
<?php
include ('/home/david/mysqldata.php');

\$handle = mysql_connect ("127.0.0.1", \$MYSQL_NAME, \$MYSQL_PASSWORD);

mysql_query ("CREATE DATABASE quantity039", \$handle);

mysql_select_db ("quantity039", \$handle);

mysql_query ("CREATE TABLE a (x VARCHAR (4))", \$handle);
mysql_query ("CREATE TABLE b (x VARCHAR (4))", \$handle);
mysql_query ("CREATE TABLE c (x VARCHAR (4))", \$handle);

for (\$i = 0;   \$i < 20;  \$i++) {
    mysql_query ("INSERT INTO a VALUES ("" . rand () % 64 . "")", \$handle);
    mysql_query ("INSERT INTO b VALUES ("" . rand () % 64 . "")", \$handle);
    mysql_query ("INSERT INTO c VALUES ("" . rand () % 64 . "")", \$handle);
}

/*
a OR b
a OR c
b OR c

a AND b
a AND c
b AND c

(a OR b) AND c = a AND c OR b AND c
(a OR c) AND b = a AND b OR c AND b
(b OR c) AND a = b AND a OR c AND a
*/

/*
a AND b
a AND c
b AND c

SELECT x FROM (SELECT x FROM a INTERSECT SELECT x FROM b)x
SELECT x FROM (SELECT x FROM a INTERSECT SELECT x FROM c)x
SELECT x FROM (SELECT x FROM b INTERSECT SELECT x FROM c)X
*/


/*
a OR b
a OR c
b OR c

SELECT x FROM (SELECT x FROM a UNION SELECT x FROM b)x
SELECT x FROM (SELECT x FROM a UNION SELECT x FROM c)x
SELECT x FROM (SELECT x FROM b UNION SELECT x FROM c)x
*/

/*
(a OR b) AND c = a AND c OR b AND c

SELECT x FROM (
    SELECT x FROM (SELECT x FROM a UNION SELECT x FROM b)x
    INTERSECT
    SELECT x FROM c
) x ORDER BY x

SELECT x FROM (
    SELECT x FROM (SELECT x FROM a INTERSECT SELECT x FROM c)x
    UNION
    SELECT x FROM (SELECT x FROM b INTERSECT SELECT x FROM c)x
) x ORDER BY x
*/

/*
(a OR c) AND b = a AND b OR c AND b

SELECT x FROM (
    SELECT x FROM (SELECT x FROM a UNION SELECT x FROM c)x
    INTERSECT
    SELECT x FROM b
) x ORDER BY x

SELECT x FROM (
    SELECT x FROM (SELECT x FROM a INTERSECT SELECT x FROM b)x
    UNION
    SELECT x FROM (SELECT x FROM c INTERSECT SELECT x FROM b)x
) x ORDER BY x
*/

/*
(b OR c) AND a = b AND a OR c AND a

SELECT x FROM (
    SELECT x FROM (SELECT x FROM b UNION SELECT x FROM c)x
    INTERSECT
    SELECT x FROM a
) x ORDER BY x

SELECT x FROM (
    SELECT x FROM (SELECT x FROM b INTERSECT SELECT x FROM a)x
    UNION
    SELECT x FROM (SELECT x FROM c INTERSECT SELECT x FROM a)x
) x ORDER BY x
*/

\$result = mysql_query ("SELECT x FROM (SELECT x FROM a INTERSECT SELECT x FROM b)x");
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br><br>nn";
\$result = mysql_query ("SELECT x FROM (SELECT x FROM a INTERSECT SELECT x FROM c)x");
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br><br>nn";
\$result = mysql_query ("SELECT x FROM (SELECT x FROM b INTERSECT SELECT x FROM c)x");
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br><br>nn";
\$result = mysql_query ("SELECT x FROM (SELECT x FROM a UNION SELECT x FROM b)x");
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br><br>nn";
\$result = mysql_query ("SELECT x FROM (SELECT x FROM a UNION SELECT x FROM c)x");
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br><br>nn";
\$result = mysql_query ("SELECT x FROM (SELECT x FROM b UNION SELECT x FROM c)x");
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br><br>nn";
\$result = mysql_query ("SELECT x FROM (SELECT x FROM (SELECT x FROM a UNION SELECT x FROM b)x INTERSECT SELECT x FROM c) x ORDER BY x");
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br><br>nn";
\$result = mysql_query ("SELECT x FROM (SELECT x FROM (SELECT x FROM a INTERSECT SELECT x FROM c)x UNION SELECT x FROM (SELECT x FROM b INTERSECT SELECT x FROM c)x) x ORDER BY x");
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br><br>nn";
\$result = mysql_query ("SELECT x FROM (SELECT x FROM (SELECT x FROM a UNION SELECT x FROM c)x INTERSECT SELECT x FROM b) x ORDER BY x");
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br><br>nn";
\$result = mysql_query ("SELECT x FROM (SELECT x FROM (SELECT x FROM a INTERSECT SELECT x FROM b)x UNION SELECT x FROM (SELECT x FROM c INTERSECT SELECT x FROM b)x) x ORDER BY x");
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br><br>nn";
\$result = mysql_query ("SELECT x FROM (SELECT x FROM (SELECT x FROM b UNION SELECT x FROM c)x INTERSECT SELECT x FROM a) x ORDER BY x");
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br><br>nn";
\$result = mysql_query ("SELECT x FROM (SELECT x FROM (SELECT x FROM b INTERSECT SELECT x FROM a)x UNION SELECT x FROM (SELECT x FROM c INTERSECT SELECT x FROM a)x) x ORDER BY x");
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br><br>nn";

mysql_close (\$handle);


?>

039/quantitysql.php
<?php
include ('/home/david/mysqldata.php');

\$handle = mysql_connect ("127.0.0.1", \$MYSQL_NAME, \$MYSQL_PASSWORD);

mysql_select_db ("test040", \$handle);

mysql_query ("INSERT INTO def VALUES ("002", "002")", \$handle);

\$result = mysql_query ("SELECT * FROM abc INNER JOIN def ON abc.name1 = def.name3", \$handle);
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["name1"] . " " . \$row ["name2"] . " " . \$row ["name3"] . " " . \$row ["name4"]. "<br>n";
\$result = mysql_query ("SELECT * FROM abc RIGHT JOIN def ON abc.name2 = def.name4", \$handle);
while (\$row = mysql_fetch_row (\$result))
    echo \$row [0] . " " . \$row [1] . " " . \$row [2] . " " . \$row [3] . "<br>n";
mysql_close (\$handle);
?>
040/database.php
<?php
session_start ();
?>

<form method="GET" action="./form1.php">
<input type="text" name="text1"></input>
<input type="submit"></input>
</form>

<?php
echo htmlentities (\$_GET ["text1"]) . "<br>n";

echo session_id () . "<br>n";

setcookie ("Cookie40", "THIS_IS_COOKIE_40", time () + 3600);

echo htmlentities (\$_COOKIE ["Cookie40"]) . "<br>n";
echo htmlentities (\$_COOKIE ["Cookie40a"]) . "<br>n";
?>
040/form1.php
GET /040/form1.php?text1=THIS_IS_TEXT1 HTTP/1.1
host: localhost
Cookie: Cookie40a=THIS_IS_COOKIE_40a
040/httprequest01.txt
david@intel-compute-stick:/var/www/html/039\$ mysql -u root -p
Enter password:
Welcome to the MariaDB monitor.  Commands end with ; or g.
Your MariaDB connection id is 2248
Server version: 10.5.12-MariaDB-0+deb11u1 Debian 11

Copyright (c) 2000, 2018, Oracle, MariaDB Corporation Ab and others.

Type 'help;' or 'h' for help. Type 'c' to clear the current input statement.

MariaDB [(none)]> CREATE DATABASE test040;
Query OK, 1 row affected (0.038 sec)

MariaDB [(none)]> USE test040;
Database changed
MariaDB [test040]> CREATE TABLE abc (name1 VARCHAR (32), name2 VARCHAR (32));
Query OK, 0 rows affected (0.069 sec)

MariaDB [test040]> CREATE TABLE def (name3 VARCHAR (32), name4 VARCHAR (32));
Query OK, 0 rows affected (0.060 sec)

MariaDB [test040]> INSERT INTO abc VALUE ("001", "001");
Query OK, 1 row affected (0.031 sec)

MariaDB [test040]> INSERT INOT abc VALUES ("001", "002");
ERROR 1064 (42000): You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near 'abc VALUES ("001", "002")' at line 1
MariaDB [test040]> INSERT INTO abc VALUES ("001", "002");
Query OK, 1 row affected (0.030 sec)

MariaDB [test040]> SELECT * FROM abc;
+-------+-------+
| name1 | name2 |
+-------+-------+
| 001   | 001   |
| 001   | 002   |
+-------+-------+
2 rows in set (0.001 sec)

MariaDB [test040]> INSERT INTO abc VALUES ("002", "001");
Query OK, 1 row affected (0.030 sec)

MariaDB [test040]> INSERT INTO abc VALUES ("002", "002");
Query OK, 1 row affected (0.025 sec)

MariaDB [test040]> INSERT INTO def (name1, name3) VALUES ("001", "001");
ERROR 1054 (42S22): Unknown column 'name1' in 'field list'
MariaDB [test040]> INSERT INTO def (name3, name4) VALUES ("001", "001");
Query OK, 1 row affected (0.030 sec)

MariaDB [test040]> INSERT INTO def (name4, name3) VALUES ("002", "001");
Query OK, 1 row affected (0.027 sec)

MariaDB [test040]> INSERT INTO def (name3, name4) VALUES ("abc", "def");
Query OK, 1 row affected (0.027 sec)

MariaDB [test040]> SELECT * FROM abc;
+-------+-------+
| name1 | name2 |
+-------+-------+
| 001   | 001   |
| 001   | 002   |
| 002   | 001   |
| 002   | 002   |
+-------+-------+
4 rows in set (0.001 sec)

MariaDB [test040]> SELECT * FROM def;
+-------+-------+
| name3 | name4 |
+-------+-------+
| 001   | 001   |
| 001   | 002   |
| abc   | def   |
+-------+-------+
3 rows in set (0.001 sec)

MariaDB [test040]> SELECT * FROM abc JOIN def;
+-------+-------+-------+-------+
| name1 | name2 | name3 | name4 |
+-------+-------+-------+-------+
| 001   | 001   | 001   | 001   |
| 001   | 001   | 001   | 002   |
| 001   | 001   | abc   | def   |
| 001   | 002   | 001   | 001   |
| 001   | 002   | 001   | 002   |
| 001   | 002   | abc   | def   |
| 002   | 001   | 001   | 001   |
| 002   | 001   | 001   | 002   |
| 002   | 001   | abc   | def   |
| 002   | 002   | 001   | 001   |
| 002   | 002   | 001   | 002   |
| 002   | 002   | abc   | def   |
+-------+-------+-------+-------+
12 rows in set (0.002 sec)

MariaDB [test040]> SELECT * FROm abc INNER JOIN def.name3 = abc.name1;
ERROR 1064 (42000): You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near '.name1' at line 1
MariaDB [test040]> SELECT * FROM abc INNER JOIN def.name3 = abc.name1;
ERROR 1064 (42000): You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near '.name1' at line 1
MariaDB [test040]> SELECT * FROM abc INNER JOIN ON def.name3 = abc.name1;
ERROR 1064 (42000): You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near 'ON def.name3 = abc.name1' at line 1
MariaDB [test040]> SELECT * FROM abc INNER JOIN def OON def.name3 = abc.name1;
ERROR 1064 (42000): You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near 'def.name3 = abc.name1' at line 1
MariaDB [test040]> SELECT * FROM abc INNER JOIN def ON def.name3 = abc.name1;
+-------+-------+-------+-------+
| name1 | name2 | name3 | name4 |
+-------+-------+-------+-------+
| 001   | 001   | 001   | 001   |
| 001   | 001   | 001   | 002   |
| 001   | 002   | 001   | 001   |
| 001   | 002   | 001   | 002   |
+-------+-------+-------+-------+
4 rows in set (0.002 sec)

MariaDB [test040]> SELECT * FROM abc LEFT JOIN def ON abc.name1 = def.name3;
+-------+-------+-------+-------+
| name1 | name2 | name3 | name4 |
+-------+-------+-------+-------+
| 001   | 001   | 001   | 001   |
| 001   | 002   | 001   | 001   |
| 001   | 001   | 001   | 002   |
| 001   | 002   | 001   | 002   |
| 002   | 001   | NULL  | NULL  |
| 002   | 002   | NULL  | NULL  |
+-------+-------+-------+-------+
6 rows in set (0.002 sec)

MariaDB [test040]> SELECT * FROM abc RIGHT JOIN def ON abc.name2 = def.name4;
+-------+-------+-------+-------+
| name1 | name2 | name3 | name4 |
+-------+-------+-------+-------+
| 001   | 001   | 001   | 001   |
| 001   | 002   | 001   | 002   |
| 002   | 001   | 001   | 001   |
| 002   | 002   | 001   | 002   |
| NULL  | NULL  | abc   | def   |
+-------+-------+-------+-------+
5 rows in set (0.002 sec)

MariaDB [test040]> QUIT
Bye
david@intel-compute-stick:/var/www/html/039\$

040/output01.txt
001 001 001 001<br>
001 002 001 001<br>
001 001 001 002<br>
001 002 001 002<br>
002 001 002 002<br>
002 002 002 002<br>
002 001 002 002<br>
002 002 002 002<br>
001 001 001 001<br>
001 002 001 002<br>
001 002 002 002<br>
001 002 002 002<br>
002 001 001 001<br>
002 002 001 002<br>
002 002 002 002<br>
002 002 002 002<br>
  abc def<br>
040/output02.txt
david@intel-compute-stick:/var/www/html/040\$ telnet 127.0.0.1 80
Trying 127.0.0.1...
Connected to 127.0.0.1.
Escape character is '\^]'.
GET /040/form1.php?text1=THIS_IS_TEXT1 HTTP/1.1
host: localhost
Cookie: Cookie40a=THIS_IS_COOKIE_40a

HTTP/1.1 200 OK
Date: Sun, 08 May 2022 16:26:36 GMT
Server: Apache/2.4.52 (Debian)
Set-Cookie: PHPSESSID=jej4hloq3lhn2h90vs8rrivv01; path=/
Expires: Thu, 19 Nov 1981 08:52:00 GMT
Cache-Control: no-store, no-cache, must-revalidate, post-check=0, pre-check=0
Pragma: no-cache
Set-Cookie: Cookie40=THIS_IS_COOKIE_40; expires=Sun, 08-May-2022 17:26:37 GMT; Max-Age=3600
Vary: Accept-Encoding
Content-Length: 199
Content-Type: text/html; charset=UTF-8


<form method="GET" action="./form1.php">
<input type="text" name="text1"></input>
<input type="submit"></input>
</form>

THIS_IS_TEXT1<br>
jej4hloq3lhn2h90vs8rrivv01<br>
<br>
THIS_IS_COOKIE_40a<br>
Connection closed by foreign host.
david@intel-compute-stick:/var/www/html/040\$

040/output03.txt
43<br>
14<br>
54<br>
6<br>
22<br>
11<br>
44<br>
37<br>
32<br>
40<br>
53<br>
35<br>
25<br>
57<br>
58<br>
28<br>
36<br>
26<br>
62<br>
42<br>
63<br>
48<br>
33<br>
51<br>
3<br>
8<br>
50<br>
34<br>
60<br>
13<br>
55<br>
15<br>
20<br>
16<br>
0<br>
47<br>
12<br>
23<br>
38<br>
18<br>
21<br>
2<br>
27<br>
61<br>
39<br>
17<br>
<br>

43<br>
14<br>
54<br>
6<br>
22<br>
11<br>
44<br>
37<br>
32<br>
40<br>
53<br>
35<br>
25<br>
57<br>
58<br>
28<br>
36<br>
26<br>
62<br>
42<br>
63<br>
48<br>
33<br>
51<br>
3<br>
8<br>
50<br>
34<br>
60<br>
13<br>
45<br>
20<br>
31<br>
47<br>
38<br>
55<br>
16<br>
4<br>
17<br>
23<br>
19<br>
1<br>
9<br>
<br>

34<br>
55<br>
11<br>
15<br>
25<br>
20<br>
57<br>
16<br>
0<br>
43<br>
47<br>
54<br>
12<br>
23<br>
38<br>
18<br>
40<br>
8<br>
21<br>
22<br>
2<br>
44<br>
27<br>
42<br>
61<br>
39<br>
17<br>
33<br>
13<br>
45<br>
32<br>
50<br>
14<br>
63<br>
58<br>
28<br>
31<br>
4<br>
6<br>
48<br>
26<br>
35<br>
19<br>
1<br>
9<br>
<br>

43<br>
54<br>
22<br>
11<br>
44<br>
40<br>
25<br>
57<br>
42<br>
33<br>
8<br>
34<br>
<br>

14<br>
54<br>
6<br>
22<br>
11<br>
32<br>
40<br>
35<br>
58<br>
28<br>
26<br>
63<br>
48<br>
33<br>
8<br>
50<br>
13<br>
<br>

55<br>
11<br>
20<br>
16<br>
47<br>
54<br>
23<br>
38<br>
40<br>
8<br>
22<br>
17<br>
33<br>
<br>

3<br>
6<br>
8<br>
11<br>
13<br>
14<br>
22<br>
25<br>
26<br>
28<br>
32<br>
33<br>
34<br>
35<br>
36<br>
37<br>
40<br>
42<br>
43<br>
44<br>
48<br>
50<br>
51<br>
53<br>
54<br>
57<br>
58<br>
60<br>
62<br>
63<br>
<br>

6<br>
8<br>
11<br>
13<br>
14<br>
16<br>
17<br>
20<br>
22<br>
23<br>
26<br>
28<br>
32<br>
33<br>
35<br>
38<br>
40<br>
47<br>
48<br>
50<br>
54<br>
55<br>
58<br>
63<br>
<br>

8<br>
11<br>
16<br>
17<br>
20<br>
22<br>
23<br>
25<br>
33<br>
34<br>
38<br>
40<br>
42<br>
43<br>
44<br>
47<br>
54<br>
55<br>
57<br>
<br>

6<br>
8<br>
11<br>
13<br>
14<br>
16<br>
17<br>
20<br>
22<br>
23<br>
26<br>
28<br>
32<br>
33<br>
35<br>
38<br>
40<br>
47<br>
48<br>
50<br>
54<br>
55<br>
58<br>
63<br>
<br>

6<br>
8<br>
11<br>
13<br>
14<br>
22<br>
25<br>
26<br>
28<br>
32<br>
33<br>
34<br>
35<br>
40<br>
42<br>
43<br>
44<br>
48<br>
50<br>
54<br>
57<br>
58<br>
63<br>
<br>

6<br>
8<br>
11<br>
13<br>
14<br>
16<br>
17<br>
20<br>
22<br>
23<br>
26<br>
28<br>
32<br>
33<br>
35<br>
38<br>
40<br>
47<br>
48<br>
50<br>
54<br>
55<br>
58<br>
63<br>
<br>

040/output04.txt
<?php
include ('/home/david/mysqldata.php');

\$handle = mysql_connect ("127.0.0.1", \$MYSQL_NAME, \$MYSQL_PASSWORD);

mysql_query ("CREATE DATABASE quantity040", \$handle);

mysql_select_db ("quantity040", \$handle);

mysql_query ("CREATE TABLE a (x INTEGER)", \$handle);
mysql_query ("CREATE TABLE b (x INTEGER)", \$handle);
mysql_query ("CREATE TABLE c (x INTEGER)", \$handle);

for (\$i = 0;   \$i < 20;  \$i++) {
    mysql_query ("INSERT INTO a VALUES ("" . rand () % 64 . "")", \$handle);
    mysql_query ("INSERT INTO b VALUES ("" . rand () % 64 . "")", \$handle);
    mysql_query ("INSERT INTO c VALUES ("" . rand () % 64 . "")", \$handle);
}

/*
a OR b
a OR c
b OR c

a AND b
a AND c
b AND c

(a OR b) AND c = a AND c OR b AND c
(a OR c) AND b = a AND c OR c AND b
(b OR c) AND a = b AND c OR c AND a

*/


/*
a OR b
a OR c
b OR c

SELECT x FROM (SELECT x FROM a UNION SELECT x FROM b)x
SELECT x FROM (SELECT x FROM a UNION SELECT x FROM c)x
SELECT x FROM (SELECT x FROM b UNION SELECT x FROM c)x
*/

/*
a AND b
a AND c
b AND c

SELECT x FROM (SELECT x FROM a INTERSECT SELECT x FROM b)x
SELECT x FROM (SELECT x FROM a INTERSECT SELECT x FROM c)x
SELECT x FROM (SELECT x FROM b INTERSECT SELECT x FROM c)x
*/

/*
(a OR b) AND c = a AND c OR b AND c

SELECT x FROM (
    SELECT x FROM (SELECT x FROM a UNION SELECT x FROM b)x
    INTERSECT
    SELECT x FROM a
) x ORDER BY x

SELECT x FROM (
    SELECT x FROM (SELECT x FROM a INTERSECT SELECT x FROM c)x
    UNION
    SELECT x FROM (SELECT x FROM b INTERESCT SELECT x FROM c)x
) x ORDER BY x
*/

/*
(a OR c) AND b = a AND c OR c AND b

SELECT x FROM (
    SELECT x FROM (SELECT x FROM a UNION SELECT x FROM c)x
    INTERSECT
    SELECT x FROM b
) x ORDER BY x

SELECT x FROM (
    SELECT x FROM (SELECT x FROM a INTERSECT SELECT x FROM c) x
    UNION
    SELECT x FROM (SELECT x FROM c INTERSECT SELECT x FROM b) x
) x ORDER BY x
*/

/*
(b OR c) AND a = b AND c OR c AND a

SELECT x FROM (
    SELECT x FROM (SELECT x FROM b UNION SELECT x FROM c)x
    INTERSECT
    SELECT x FROM a
) x ORDER BY x

SELECT x FROM (
    SELECT x FROM (SELECT x FROM b INTERSECT SELECT x FROM c)x
    UNION
    SELECT x FROM (SELECT x FROM c INTERSECT SELECT x FROM a)x
) x ORDER BY x
*/










\$result = mysql_query ("SELECT x FROM (SELECT x FROM a UNION SELECT x FROM b)x");
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br>nn";
\$result = mysql_query ("SELECT x FROM (SELECT x FROM a UNION SELECT x FROM c)x");
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br>nn";
\$result = mysql_query ("SELECT x FROM (SELECT x FROM b UNION SELECT x FROM c)x");
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br>nn";

\$result = mysql_query ("SELECT x FROM (SELECT x FROM a INTERSECT SELECT x FROM b)x");
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br>nn";
\$result = mysql_query ("SELECT x FROM (SELECT x FROM a INTERSECT SELECT x FROM c)x");
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br>nn";
\$result = mysql_query ("SELECT x FROM (SELECT x FROM b INTERSECT SELECT x FROM c)x");
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br>nn";

\$result = mysql_query ("SELECT x FROM (SELECT x FROM (SELECT x FROM a UNION SELECT x FROM b)x INTERSECT SELECT x FROM a) x ORDER BY x");
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br>nn";

\$result = mysql_query ("SELECT x FROM (SELECT x FROM (SELECT x FROM a INTERSECT SELECT x FROM c)x UNION SELECT x FROM (SELECT x FROM b INTERSECT SELECT x FROM c)x) x ORDER BY x");
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br>nn";

\$result = mysql_query ("SELECT x FROM (SELECT x FROM (SELECT x FROM a UNION SELECT x FROM c)x INTERSECT SELECT x FROM b) x ORDER BY x");
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br>nn";

\$result = mysql_query ("SELECT x FROM (SELECT x FROM (SELECT x FROM a INTERSECT SELECT x FROM c) x UNION SELECT x FROM (SELECT x FROM c INTERSECT SELECT x FROM b) x) x ORDER BY x");
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br>nn";

\$result = mysql_query ("SELECT x FROM (SELECT x FROM (SELECT x FROM b UNION SELECT x FROM c)x INTERSECT SELECT x FROM a) x ORDER BY x");
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br>nn";

\$result = mysql_query ("SELECT x FROM (SELECT x FROM (SELECT x FROM b INTERSECT SELECT x FROM c)x UNION SELECT x FROM (SELECT x FROM c INTERSECT SELECT x FROM a)x) x ORDER BY x");
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br>nn";


?>
040/quantitysql.php
<?php
include ('/home/david/mysqldata.php');

\$handle = mysql_connect ("127.0.0.1", \$MYSQL_NAME, \$MYSQL_PASSWORD);

mysql_select_db ("test041", \$handle);

mysql_query ("INSERT INTO def VALUES ("002", "002")", \$handle);

\$result = mysql_query ("SELECT * FROM abc INNER JOIN def ON abc.name1 = def.name3", \$handle);
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["name1"] . " " . \$row ["name2"] . " " . \$row ["name3"] . " " . \$row ["name4"] . "<br>n";
\$result = mysql_query ("SELECT * FROM abc LEFT JOIN def ON abc.name2 = def.name4", \$handle);
while (\$row = mysql_fetch_row (\$result))
    echo \$row [0] . " " . \$row [1] . " " . \$row [2] . " " . \$row [3] . "<br>n";
mysql_close (\$handle);
?>
041/database.php
<?php
session_start ();
?>

<form method="GET" action="./form1.php">
<input type="text" name="text1"></input>
<input type="submit"></input>
</form>

<?php
echo session_id () . "<br>n";

setcookie ("Cookie41", "THIS_IS_COOKIE_41", time () + 3600);

echo htmlentities (\$_GET ["text1"]) . "<br>n";
echo htmlentities (\$_COOKIE ["Cookie41"]) . "<br>n";
echo htmlentities (\$_COOKIE ["Cookie41a"]) . "<br>n";
?>
041/form1.php
GET /041/form1.php?text1=DIES_IST_TEXT_41 HTTP/1.1
host: localhost
Cookie: Cookie41a=DIES_IST_COOKIE_41a
041/httprequest01.txt
david@intel-compute-stick:~\$ mysql -u root -p
Enter password:
Welcome to the MariaDB monitor.  Commands end with ; or g.
Your MariaDB connection id is 2282
Server version: 10.5.12-MariaDB-0+deb11u1 Debian 11

Copyright (c) 2000, 2018, Oracle, MariaDB Corporation Ab and others.

Type 'help;' or 'h' for help. Type 'c' to clear the current input statement.

MariaDB [(none)]> CREATE DATABASE test040;
ERROR 1007 (HY000): Can't create database 'test040'; database exists
MariaDB [(none)]> CREATE DATABASE test041;
Query OK, 1 row affected (0.032 sec)

MariaDB [(none)]> USE test041
Database changed
MariaDB [test041]> CREATE TABLE abc (name1 VARCHAR (32), name2 VARCHAR (32));
Query OK, 0 rows affected (0.075 sec)

MariaDB [test041]> CREATE TABLE def (name3 VARCHAR (32), name4 VARCHAR (32));
Query OK, 0 rows affected (0.070 sec)

MariaDB [test041]> INSERT INTO abc VALUES ("001", "001");
Query OK, 1 row affected (0.038 sec)

MariaDB [test041]> INSERT INTO abc (name2, name1) VALUES ("002", "001");
Query OK, 1 row affected (0.025 sec)

MariaDB [test041]> INSERT INTO abc (name1, name2) VALUES ("002", "001");
Query OK, 1 row affected (0.026 sec)

MariaDB [test041]> INSERT INTO abc VALUES ("002", "002");
Query OK, 1 row affected (0.025 sec)

MariaDB [test041]> INSERT INTO def VALUES ("001", "001");
Query OK, 1 row affected (0.030 sec)

MariaDB [test041]> INSERT INTO def VALUES ("001", "002");
Query OK, 1 row affected (0.028 sec)

MariaDB [test041]> INSERT INTO def VALUES ("abc", "def");
Query OK, 1 row affected (0.026 sec)

MariaDB [test041]> SELECT * FROM abc;
+-------+-------+
| name1 | name2 |
+-------+-------+
| 001   | 001   |
| 001   | 002   |
| 002   | 001   |
| 002   | 002   |
+-------+-------+
4 rows in set (0.001 sec)

MariaDB [test041]> SELECT * FROM def;
+-------+-------+
| name3 | name4 |
+-------+-------+
| 001   | 001   |
| 001   | 002   |
| abc   | def   |
+-------+-------+
3 rows in set (0.001 sec)

MariaDB [test041]> SELECT * FROM abc JOIN def;
+-------+-------+-------+-------+
| name1 | name2 | name3 | name4 |
+-------+-------+-------+-------+
| 001   | 001   | 001   | 001   |
| 001   | 001   | 001   | 002   |
| 001   | 001   | abc   | def   |
| 001   | 002   | 001   | 001   |
| 001   | 002   | 001   | 002   |
| 001   | 002   | abc   | def   |
| 002   | 001   | 001   | 001   |
| 002   | 001   | 001   | 002   |
| 002   | 001   | abc   | def   |
| 002   | 002   | 001   | 001   |
| 002   | 002   | 001   | 002   |
| 002   | 002   | abc   | def   |
+-------+-------+-------+-------+
12 rows in set (0.001 sec)

MariaDB [test041]> SELECT * FROM abc INNER JOIN def ON abc.name1 = def.name3;
+-------+-------+-------+-------+
| name1 | name2 | name3 | name4 |
+-------+-------+-------+-------+
| 001   | 001   | 001   | 001   |
| 001   | 001   | 001   | 002   |
| 001   | 002   | 001   | 001   |
| 001   | 002   | 001   | 002   |
+-------+-------+-------+-------+
4 rows in set (0.002 sec)

MariaDB [test041]> SELECT * FROM abc LEFT JOIN def ON abc.name2 = def.name4;
+-------+-------+-------+-------+
| name1 | name2 | name3 | name4 |
+-------+-------+-------+-------+
| 001   | 001   | 001   | 001   |
| 002   | 001   | 001   | 001   |
| 001   | 002   | 001   | 002   |
| 002   | 002   | 001   | 002   |
+-------+-------+-------+-------+
4 rows in set (0.002 sec)

MariaDB [test041]> SELECT * FROM abc RIGHT JOIN def ON abc.name1 = def.name4;
+-------+-------+-------+-------+
| name1 | name2 | name3 | name4 |
+-------+-------+-------+-------+
| 001   | 001   | 001   | 001   |
| 001   | 002   | 001   | 001   |
| 002   | 001   | 001   | 002   |
| 002   | 002   | 001   | 002   |
| NULL  | NULL  | abc   | def   |
+-------+-------+-------+-------+
5 rows in set (0.002 sec)

MariaDB [test041]> quit
Bye
david@intel-compute-stick:~\$

041/output01.txt
001 001 001 001<br>
001 002 001 001<br>
001 001 001 002<br>
001 002 001 002<br>
002 001 002 002<br>
002 002 002 002<br>
001 001 001 001<br>
002 001 001 001<br>
001 002 001 002<br>
002 002 001 002<br>
001 002 002 002<br>
002 002 002 002<br>
041/output02.txt
david@intel-compute-stick:~\$ telnet 127.0.0.1 80
Trying 127.0.0.1...
Connected to 127.0.0.1.
Escape character is '\^]'.
GET /041/form1.php?text1=DIES_IST_TEXT_41 HTTP/1.1
host: localhost
Cookie: Cookie41a=DIES_IST_COOKIE_41a

HTTP/1.1 200 OK
Date: Mon, 09 May 2022 12:53:06 GMT
Server: Apache/2.4.52 (Debian)
Set-Cookie: PHPSESSID=013kgidvul388qcj57kepqg5t6; path=/
Expires: Thu, 19 Nov 1981 08:52:00 GMT
Cache-Control: no-store, no-cache, must-revalidate, post-check=0, pre-check=0
Pragma: no-cache
Set-Cookie: Cookie41=THIS_IS_COOKIE_41; expires=Mon, 09-May-2022 13:53:08 GMT; Max-Age=3600
Vary: Accept-Encoding
Content-Length: 203
Content-Type: text/html; charset=UTF-8


<form method="GET" action="./form1.php">
<input type="text" name="text1"></input>
<input type="submit"></input>
</form>

013kgidvul388qcj57kepqg5t6<br>
DIES_IST_TEXT_41<br>
<br>
DIES_IST_COOKIE_41a<br>

Connection closed by foreign host.
david@intel-compute-stick:~\$

041/output03.txt
21<br>
4<br>
23<br>
2<br>
40<br>
14<br>
45<br>
15<br>
41<br>
24<br>
61<br>
36<br>
62<br>
3<br>
27<br>
28<br>
12<br>
17<br>
29<br>
11<br>
58<br>
51<br>
33<br>
44<br>
32<br>
54<br>
19<br>
59<br>
9<br>
55<br>
6<br>
47<br>
7<br>
<br>

21<br>
4<br>
23<br>
2<br>
40<br>
14<br>
45<br>
15<br>
41<br>
24<br>
61<br>
36<br>
62<br>
3<br>
27<br>
28<br>
12<br>
17<br>
39<br>
26<br>
63<br>
25<br>
0<br>
48<br>
44<br>
42<br>
7<br>
18<br>
47<br>
54<br>
11<br>
8<br>
<br>

29<br>
11<br>
58<br>
12<br>
51<br>
33<br>
17<br>
44<br>
32<br>
54<br>
19<br>
59<br>
9<br>
55<br>
6<br>
47<br>
7<br>
39<br>
26<br>
4<br>
63<br>
25<br>
0<br>
48<br>
24<br>
42<br>
18<br>
28<br>
8<br>
41<br>
<br>

12<br>
17<br>
<br>

4<br>
41<br>
24<br>
28<br>
<br>

11<br>
44<br>
54<br>
47<br>
7<br>
<br>

2<br>
3<br>
4<br>
12<br>
14<br>
15<br>
17<br>
21<br>
23<br>
24<br>
27<br>
28<br>
36<br>
40<br>
41<br>
45<br>
61<br>
62<br>
<br>

4<br>
7<br>
11<br>
24<br>
28<br>
41<br>
44<br>
47<br>
54<br>
<br>

7<br>
11<br>
12<br>
17<br>
44<br>
47<br>
54<br>
<br>

7<br>
11<br>
12<br>
17<br>
44<br>
47<br>
54<br>
<br>

4<br>
12<br>
17<br>
24<br>
28<br>
41<br>
<br>

4<br>
12<br>
17<br>
24<br>
28<br>
41<br>
<br>

041/output04.txt
<?php
include ('/home/david/mysqldata.php');

\$handle = mysql_connect ("localhost", \$MYSQL_NAME, \$MYSQL_PASSWORD);

mysql_query ("CREATE DATABASE quantity041", \$handle);
mysql_select_db ("quantity041", \$handle);

mysql_query ("CREATE TABLE a (x INTEGER)", \$handle);
mysql_query ("CREATE TABLE b (x INTEGER)", \$handle);
mysql_query ("CREATE TABLE c (x INTEGER)", \$handle);

for (\$i = 0;  \$i < 20;  \$i++) {
    mysql_query ("INSERT INTO a VALUES ("" . rand () % 64 . "")", \$handle);
    mysql_query ("INSERT INTO b VALUES ("" . rand () % 64 . "")", \$handle);
    mysql_query ("INSERT INTO c VALUES ("" . rand () % 64 . "")", \$handle);
}

/*
a OR b
a OR c
b OR c

a AND b
a AND c
b AND c

(a OR b) AND c = a AND c OR b AND c
(a OR c) AND b = a AND b OR c AND b
(b OR c) AND a = b AND a OR c AND a
*/

/*
a OR b
a OR c
b OR c

SELECT x FROM (SELECT x FROM a UNION SELECT x FROM b)x
SELECT x FROM (SELECT x FROM a UNION SELECT x FROM c)x
SELECT x FROM (SELECT x FROM b UNION SELECT x FROM c)x
*/

/*
a AND b
a AND c
b AND c

SELECT x FROM (SELECT x FROM a INTERSECT SELECT x FROM b)x
SELECT x FROM (SELECT x FROM a INTERSECT SELECT x FROM c)x
SELECT x FROM (SELECT x FROM b INTERSECT SELECT x FROM c)x
*/

/*
(a OR b) AND c = a AND c OR b AND c

SELECT x FROM (
    SELECT x FROM (SELECT x FROM a UNION SELECT x FROM b)x
    INTERSECT
    SELECT x FROM a
) x ORDER BY x

SELECT x FROM (
    SELECT x FROM (SELECT x FROM a INTERSECT SELECT x FROM c)x
    UNION
    SELECT x FROM (SELECT x FROM b INTERSECT SELECT x FROM c)x
) x ORDER BY x
*/

/*
(a OR c) AND b = a AND b OR c AND b

SELECT x FROM (
    SELECT x FROM (SELECT x FROM a UNION SELECT x FROM c) x
    INTERSECT
    SELECT x FROM b
) x ORDER BY x

SELECT x FROM (
    SELECT x FROM (SELECT x FROM a INTERSECT SELECT x FROM b)x
    UNION
    SELECT x FROM (SELECT x FROM c INTERSECT SELECT x FROM b)x
) x ORDER BY x
*/

/*
(b OR c) AND a = b AND a OR c AND a

SELECT x FROM (
    SELECT x FROM (SELECT x FROM b UNION SELECT x FROM c)x
    INTERSECT
    SELECT x FROM a
) x ORDER BY x

SELECT x FROM (
    SELECT x FROM (SELECT x FROM b INTERSECT SELECT x FROM a)x
    UNION
    SELECT x FROM (SELECT x FROM c INTERSECT SELECT x FROM a)x
) x ORDER BY x
*/



\$result = mysql_query("SELECT x FROM (SELECT x FROM a UNION SELECT x FROM b)x");
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br>nn";
\$result = mysql_query("SELECT x FROM (SELECT x FROM a UNION SELECT x FROM c)x");
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br>nn";
\$result = mysql_query("SELECT x FROM (SELECT x FROM b UNION SELECT x FROM c)x");
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br>nn";
\$result = mysql_query("SELECT x FROM (SELECT x FROM a INTERSECT SELECT x FROM b)x");
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br>nn";
\$result = mysql_query("SELECT x FROM (SELECT x FROM a INTERSECT SELECT x FROM c)x");
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br>nn";
\$result = mysql_query("SELECT x FROM (SELECT x FROM b INTERSECT SELECT x FROM c)x");
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br>nn";


\$result = mysql_query("SELECT x FROM (SELECT x FROM (SELECT x FROM a UNION SELECT x FROM b)x INTERSECT SELECT x FROM a) x ORDER BY x");
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br>nn";

\$result = mysql_query("SELECT x FROM (SELECT x FROM (SELECT x FROM a INTERSECT SELECT x FROM c)x UNION SELECT x FROM (SELECT x FROM b INTERSECT SELECT x FROM c)x) x ORDER BY x");
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br>nn";

\$result = mysql_query("SELECT x FROM (SELECT x FROM (SELECT x FROM a UNION SELECT x FROM c) x INTERSECT SELECT x FROM b) x ORDER BY x");
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br>nn";

\$result = mysql_query("SELECT x FROM (SELECT x FROM (SELECT x FROM a INTERSECT SELECT x FROM b)x UNION SELECT x FROM (SELECT x FROM c INTERSECT SELECT x FROM b)x) x ORDER BY x");
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br>nn";

\$result = mysql_query("SELECT x FROM (SELECT x FROM (SELECT x FROM b UNION SELECT x FROM c)x INTERSECT SELECT x FROM a) x ORDER BY x");
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br>nn";

\$result = mysql_query("SELECT x FROM (SELECT x FROM (SELECT x FROM b INTERSECT SELECT x FROM a)x UNION SELECT x FROM (SELECT x FROM c INTERSECT SELECT x FROM a)x) x ORDER BY x");
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br>nn";

mysql_close (\$handle);
?>
041/quantitysql.php
<?php
include ('/home/david/mysqldata.php');

\$handle = mysql_connect ("localhost", \$MYSQL_NAME, \$MYSQL_PASSWORD);

mysql_select_db ("test042", \$handle);

mysql_query ("INSERT INTO def VALUES ("002", "001")", \$handle);

\$result = mysql_query ("SELECT * FROM abc INNER JOIN def ON abc.name1 = def.name3", \$handle);
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["name1"] . " " . \$row ["name2"] . " " . \$row ["name3"] . " " . \$row ["name4"] . "<br>n";
\$result = mysql_query ("SELECT * FROM abc LEFT JOIN def ON abc.name2 = def.name4", \$handle);
while (\$row = mysql_fetch_row (\$result))
    echo \$row [0] . " " . \$row [1] . " " . \$row [2] . " " . \$row [3] . "<br>n";
mysql_close (\$handle);
?>
042/database.php
<?php
session_start ();
?>

<form method="GET" action="./form1.php">
<input type="text" name="text1"></input>
<input type="submit"></input>
</form>

<?php
echo session_id () . "<br>n";

setcookie ("Cookie42", "DIES_IST_COOKIE_42", time () + 3600);

echo htmlentities (\$_GET ["text1"]) . "<br>n";
echo htmlentities (\$_COOKIE ["Cookie42"]) . "<br>n";
echo htmlentities (\$_COOKIE ["Cookie42a"]) . "<br>n";
?>
042/form1.php
GET /042/form1.php?text1=DIES_IST_TEXT_042 HTTP/1.1
host: localhost
Cookie: Cookie42a=DIES_IST_COOKIE_42a
042/httprequest01.txt
david@intel-compute-stick:~\$ mysql -u root -p
Enter password:
ERROR 1698 (28000): Access denied for user 'root'@'localhost'
david@intel-compute-stick:~\$ mysql -u root -p
Enter password:
Welcome to the MariaDB monitor.  Commands end with ; or g.
Your MariaDB connection id is 2332
Server version: 10.5.12-MariaDB-0+deb11u1 Debian 11

Copyright (c) 2000, 2018, Oracle, MariaDB Corporation Ab and others.

Type 'help;' or 'h' for help. Type 'c' to clear the current input statement.

MariaDB [(none)]> CREATE DATABASE test042;
Query OK, 1 row affected (0.040 sec)

MariaDB [(none)]> USE test042;
Database changed
MariaDB [test042]> CREATE TABLE abc (name1 VARCHAR (32), name2 VARCHAR (32));
Query OK, 0 rows affected (0.113 sec)

MariaDB [test042]> CREATE TABLE def (name3 VARCHAR (32), name4 VARCHAR (32));
Query OK, 0 rows affected (0.059 sec)

MariaDB [test042]> INSERT INTO abc VALUES ("001", "001");
Query OK, 1 row affected (0.046 sec)

MariaDB [test042]> INSERT INTO abc VALUES ("001", "002");
Query OK, 1 row affected (0.025 sec)

MariaDB [test042]> INSERT INTO abc (name2, name1) VALUES ("001", "002");
Query OK, 1 row affected (0.025 sec)

MariaDB [test042]> INSERT INTO abc (name1, name2) VALUES ("002", "002");
Query OK, 1 row affected (0.026 sec)

MariaDB [test042]> INSERT INTO def (name3, name4) VALUES ("001", "001");
Query OK, 1 row affected (0.029 sec)

MariaDB [test042]> INSERT INTO def (name4, name3) VALUES ("002", "001");
Query OK, 1 row affected (0.025 sec)

MariaDB [test042]> INSERT INTO def VALUES ("abc", "def");
Query OK, 1 row affected (0.031 sec)

MariaDB [test042]> SELECT * FROM abc;
+-------+-------+
| name1 | name2 |
+-------+-------+
| 001   | 001   |
| 001   | 002   |
| 002   | 001   |
| 002   | 002   |
+-------+-------+
4 rows in set (0.001 sec)

MariaDB [test042]> SELECT * FROM defM
    -> ;
ERROR 1146 (42S02): Table 'test042.defM' doesn't exist
MariaDB [test042]> SELECT * FROM def;
+-------+-------+
| name3 | name4 |
+-------+-------+
| 001   | 001   |
| 001   | 002   |
| abc   | def   |
+-------+-------+
3 rows in set (0.001 sec)

MariaDB [test042]> SELECT * FROM abc JOIN def;
+-------+-------+-------+-------+
| name1 | name2 | name3 | name4 |
+-------+-------+-------+-------+
| 001   | 001   | 001   | 001   |
| 001   | 001   | 001   | 002   |
| 001   | 001   | abc   | def   |
| 001   | 002   | 001   | 001   |
| 001   | 002   | 001   | 002   |
| 001   | 002   | abc   | def   |
| 002   | 001   | 001   | 001   |
| 002   | 001   | 001   | 002   |
| 002   | 001   | abc   | def   |
| 002   | 002   | 001   | 001   |
| 002   | 002   | 001   | 002   |
| 002   | 002   | abc   | def   |
+-------+-------+-------+-------+
12 rows in set (0.002 sec)

MariaDB [test042]> SELECT * FROM abc INNER JOIN def ON abc.name1 = def.name3;
+-------+-------+-------+-------+
| name1 | name2 | name3 | name4 |
+-------+-------+-------+-------+
| 001   | 001   | 001   | 001   |
| 001   | 001   | 001   | 002   |
| 001   | 002   | 001   | 001   |
| 001   | 002   | 001   | 002   |
+-------+-------+-------+-------+
4 rows in set (0.002 sec)

MariaDB [test042]> SELECT * FROM abc LEFT JOIN def ON abc.name2 = def.name4;
+-------+-------+-------+-------+
| name1 | name2 | name3 | name4 |
+-------+-------+-------+-------+
| 001   | 001   | 001   | 001   |
| 002   | 001   | 001   | 001   |
| 001   | 002   | 001   | 002   |
| 002   | 002   | 001   | 002   |
+-------+-------+-------+-------+
4 rows in set (0.002 sec)

MariaDB [test042]> SELECT * FROM abc RIGHT JOIN def ON abc.name2 = def.name4;
+-------+-------+-------+-------+
| name1 | name2 | name3 | name4 |
+-------+-------+-------+-------+
| 001   | 001   | 001   | 001   |
| 001   | 002   | 001   | 002   |
| 002   | 001   | 001   | 001   |
| 002   | 002   | 001   | 002   |
| NULL  | NULL  | abc   | def   |
+-------+-------+-------+-------+
5 rows in set (0.002 sec)

MariaDB [test042]> QUIT
Bye
david@intel-compute-stick:~\$

042/output01.txt
001 001 001 001<br>
001 002 001 001<br>
001 001 001 002<br>
001 002 001 002<br>
002 001 002 001<br>
002 002 002 001<br>
001 001 001 001<br>
002 001 001 001<br>
001 002 001 002<br>
002 002 001 002<br>
001 001 002 001<br>
002 001 002 001<br>
042/output02.txt
david@intel-compute-stick:/var/www/html/042\$ telnet localhost 80
Trying ::1...
Connected to localhost.
Escape character is '\^]'.
GET /042/form1.php?text1=DIES_IST_TEXT_042 HTTP/1.1
host: localhost
Cookie: Cookie42a=DIES_IST_COOKIE_42a

HTTP/1.1 200 OK
Date: Tue, 10 May 2022 18:08:22 GMT
Server: Apache/2.4.52 (Debian)
Set-Cookie: PHPSESSID=9msdofhdik7ofg5omvbq9e2pn7; path=/
Expires: Thu, 19 Nov 1981 08:52:00 GMT
Cache-Control: no-store, no-cache, must-revalidate, post-check=0, pre-check=0
Pragma: no-cache
Set-Cookie: Cookie42=DIES_IST_COOKIE_42; expires=Tue, 10-May-2022 19:08:25 GMT; Max-Age=3600
Vary: Accept-Encoding
Content-Length: 204
Content-Type: text/html; charset=UTF-8


<form method="GET" action="./form1.php">
<input type="text" name="text1"></input>
<input type="submit"></input>
</form>

9msdofhdik7ofg5omvbq9e2pn7<br>
DIES_IST_TEXT_042<br>
<br>
DIES_IST_COOKIE_42a<br>
Connection closed by foreign host.
david@intel-compute-stick:/var/www/html/042\$

042/output03.txt
20<br>
9<br>
29<br>
25<br>
10<br>
23<br>
28<br>
2<br>
27<br>
61<br>
56<br>
12<br>
19<br>
38<br>
36<br>
32<br>
53<br>
11<br>
57<br>
49<br>
7<br>
39<br>
31<br>
15<br>
40<br>
14<br>
50<br>
37<br>
3<br>
43<br>
<br><br>

20<br>
9<br>
29<br>
25<br>
10<br>
23<br>
28<br>
2<br>
27<br>
61<br>
56<br>
12<br>
19<br>
38<br>
36<br>
32<br>
53<br>
34<br>
59<br>
7<br>
18<br>
62<br>
21<br>
13<br>
6<br>
49<br>
16<br>
31<br>
51<br>
<br><br>

28<br>
11<br>
57<br>
49<br>
10<br>
7<br>
39<br>
31<br>
15<br>
19<br>
40<br>
14<br>
50<br>
9<br>
37<br>
3<br>
32<br>
43<br>
25<br>
34<br>
59<br>
20<br>
18<br>
62<br>
21<br>
38<br>
2<br>
13<br>
6<br>
56<br>
16<br>
51<br>
<br><br>

9<br>
10<br>
28<br>
19<br>
32<br>
<br><br>

20<br>
9<br>
25<br>
2<br>
56<br>
38<br>
<br><br>

49<br>
7<br>
31<br>
9<br>
<br><br>

2<br>
7<br>
9<br>
20<br>
25<br>
31<br>
38<br>
49<br>
56<br>
<br><br>

2<br>
7<br>
9<br>
20<br>
25<br>
31<br>
38<br>
49<br>
56<br>
<br><br>

7<br>
9<br>
10<br>
19<br>
28<br>
31<br>
32<br>
49<br>
<br><br>

7<br>
9<br>
10<br>
19<br>
28<br>
31<br>
32<br>
49<br>
<br><br>

2<br>
9<br>
10<br>
19<br>
20<br>
25<br>
28<br>
32<br>
38<br>
56<br>
<br><br>

2<br>
9<br>
10<br>
19<br>
20<br>
25<br>
28<br>
32<br>
38<br>
56<br>
<br><br>

042/output04.txt
<?php
include ('/home/david/mysqldata.php');

\$handle = mysql_connect ("localhost", \$MYSQL_NAME, \$MYSQL_PASSWORD);

mysql_query ("CREATE DATABASE test042", \$handle);

mysql_select_db ("test042", \$handle);

mysql_query ("CREATE TABLE a (x INTEGER)", \$handle);
mysql_query ("CREATE TABLE b (x INTEGER)", \$handle);
mysql_query ("CREATE TABLE c (x INTEGER)", \$handle);

for (\$i = 0;  \$i < 20;  \$i++) {
    mysql_query ("INSERT INTO a VALUES ("" . rand () % 64 . "")", \$handle);
    mysql_query ("INSERT INTO b VALUES ("" . rand () % 64 . "")", \$handle);
    mysql_query ("INSERT INTO c VALUES ("" . rand () % 64 . "")", \$handle);
}

/*
a OR b
a OR c
b OR c

a AND b
a AND c
b AND c

(a OR b) AND c = a AND c OR b AND c
(a OR c) AND b = a AND b OR c AND b
(b OR c) AND a = b AND a OR c AND a

*/


/*
a OR b
a OR c
b OR c

SELECT x FROM (SELECT x FROM a UNION SELECT x FROM b) x
SELECT x FROM (SELECT x FROM a UNION SELECT x FROM c) x
SELECT x FROM (SELECT x FROM b UNION SELECT x FROM c) x
*/

/*
a AND b
a AND c
b AND c

SELECT x FROM (SELECT x FROM a INTERSECT SELECT x FROM b) x
SELECT x FROM (SELECT x FROM a INTERSECT SELECT x FROM c) x
SELECT x FROM (SELECT x FROM b INTERSECT SELECT x FROM c) x
*/

/*
(a OR b) AND c = a AND c OR b AND c

SELECT x FROM (
    SELECT x FROM (SELECT x FROM a UNION SELECT x FROM b) x
    INTERSECT
    SELECT x FROM c
) x ORDER BY x

SELECT x FROM (
    SELECT x FROM (SELECT x FROM a INTERSECT SELECT x FROM c) x
    UNION
    SELECT x FROM (SELECT x FROM b INTERSECT SELECT x FROM c) x
) x ORDER BY x
*/

/*
(a OR c) AND b = a AND b OR c AND b

SELECT x FROM (
    SELECT x FROM (SELECT x FROM a UNION SELECT x FROM c) x
    INTERSECT
    SELECT x FROM b
) x ORDER BY x

SELECT x FROM (
    SELECT x FROM (SELECT x FROM a INTERSECT SELECT x FROM b) x
    UNION
    SELECT x FROM (SELECT x FROM c INTERSECT SELECT x FROM b) x
) x ORDER BY x
*/

/*
(b OR c) AND a = b AND a OR c AND a

SELECT x FROM (
    SELECT x FROM (SELECT x FROM b UNION SELECT x FROM c) x
    INTERSECT
    SELECT x FROM a
) x ORDER BY x

SELECT x FROM (
    SELECT x FROM (SELECT x FROM b INTERSECT SELECT x FROM a) x
    UNION
    SELECT x FROM (SELECT x FROM c INTERSECT SELECT x FROM a) x
) x ORDER BY x
*/


\$result = mysql_query ("SELECT x FROM (SELECT x FROM a UNION SELECT x FROM b) x", \$handle);
while (\$row = mysql_fetch_row (\$result))
    echo \$row [0] . "<br>n";
echo "<br><br>nn";
\$result = mysql_query ("SELECT x FROM (SELECT x FROM a UNION SELECT x FROM c) x", \$handle);
while (\$row = mysql_fetch_row (\$result))
    echo \$row [0] . "<br>n";
echo "<br><br>nn";
\$result = mysql_query ("SELECT x FROM (SELECT x FROM b UNION SELECT x FROM c) x", \$handle);
while (\$row = mysql_fetch_row (\$result))
    echo \$row [0] . "<br>n";
echo "<br><br>nn";
\$result = mysql_query ("SELECT x FROM (SELECT x FROM a INTERSECT SELECT x FROM b) x", \$handle);
while (\$row = mysql_fetch_row (\$result))
    echo \$row [0] . "<br>n";
echo "<br><br>nn";
\$result = mysql_query ("SELECT x FROM (SELECT x FROM a INTERSECT SELECT x FROM c) x", \$handle);
while (\$row = mysql_fetch_row (\$result))
    echo \$row [0] . "<br>n";
echo "<br><br>nn";
\$result = mysql_query ("SELECT x FROM (SELECT x FROM b INTERSECT SELECT x FROM c) x", \$handle);
while (\$row = mysql_fetch_row (\$result))
    echo \$row [0] . "<br>n";
echo "<br><br>nn";
\$result = mysql_query ("SELECT x FROM (SELECT x FROM (SELECT x FROM a UNION SELECT x FROM b) x INTERSECT SELECT x FROM c) x ORDER BY x", \$handle);
while (\$row = mysql_fetch_row (\$result))
    echo \$row [0] . "<br>n";
echo "<br><br>nn";

\$result = mysql_query ("SELECT x FROM (SELECT x FROM (SELECT x FROM a INTERSECT SELECT x FROM c) x UNION SELECT x FROM (SELECT x FROM b INTERSECT SELECT x FROM c) x) x ORDER BY x", \$handle);
while (\$row = mysql_fetch_row (\$result))
    echo \$row [0] . "<br>n";
echo "<br><br>nn";

\$result = mysql_query ("SELECT x FROM (SELECT x FROM (SELECT x FROM a UNION SELECT x FROM c) x INTERSECT SELECT x FROM b) x ORDER BY x", \$handle);
while (\$row = mysql_fetch_row (\$result))
    echo \$row [0] . "<br>n";
echo "<br><br>nn";

\$result = mysql_query ("SELECT x FROM (SELECT x FROM (SELECT x FROM a INTERSECT SELECT x FROM b) x UNION SELECT x FROM (SELECT x FROM c INTERSECT SELECT x FROM b) x) x ORDER BY x", \$handle);
while (\$row = mysql_fetch_row (\$result))
    echo \$row [0] . "<br>n";
echo "<br><br>nn";

\$result = mysql_query ("SELECT x FROM (SELECT x FROM (SELECT x FROM b UNION SELECT x FROM c) x INTERSECT SELECT x FROM a) x ORDER BY x", \$handle);
while (\$row = mysql_fetch_row (\$result))
    echo \$row [0] . "<br>n";
echo "<br><br>nn";

\$result = mysql_query ("SELECT x FROM (SELECT x FROM (SELECT x FROM b INTERSECT SELECT x FROM a) x UNION SELECT x FROM (SELECT x FROM c INTERSECT SELECT x FROM a) x) x ORDER BY x", \$handle);
while (\$row = mysql_fetch_row (\$result))
    echo \$row [0] . "<br>n";
echo "<br><br>nn";

mysql_close (\$handle);
?>
042/quantitysql.php
<?php
include ('/home/david/mysqldata.php');

\$handle = mysql_connect ("localhost", \$MYSQL_NAME, \$MYSQL_PASSWORD);

mysql_select_db ("test043", \$handle);

mysql_query ("INSERT INTO abc VALUES ("abc", "abc"", \$handle);

\$result = mysql_query ("SELECT * FROM abc INNER JOIN def ON abc.name1 = def.name3", \$handle);
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["name1"] . " " . \$row ["name2"] . " " . \$row ["name3"] . " " . \$row ["name4"]. "<br>n";
\$result = mysql_query ("SELECT * FROM abc LEFT JOIN def ON abc.name2 = def.name4", \$handle);
while (\$row = mysql_fetch_row (\$result))
    echo \$row [0] . " " . \$row [1] . " " . \$row [2] . " " . \$row [3] . "<br>n";

mysql_close (\$handle);

?>
043/database.php
<?php
session_start ();
?>

<form action="./form1.php" method="GET">
<input type="text" name="text1"></input>
<input type="submit"></input>
</form>

<?php
setcookie ("Cookie43", "THIS_IS_COOKIE_43", time () + 3600);

echo session_id () + "<br>n";

echo htmlentities (\$_GET ["text1"]) . "<br>n";
echo htmlentities (\$_COOKIE ["Cookie43"]) . "<br>n";
echo htmlentities (\$_COOKIE ["Cookie43a"]) . "<br>n";
?>
043/form1.php
GET /043/form1.php?text1=THIS_IS_TEXT_43 HTTP/1.1
host: localhost
Cookie: Cookie43a=DIES_IST_COOKIE_43a
043/httprequest01.txt

043/output01.txt
001 001 001 001<br>
001 001 001 002<br>
001 002 001 001<br>
001 002 001 002<br>
001 001 001 001<br>
002 001 001 001<br>
001 002 001 002<br>
002 002 001 002<br>
043/output02.txt
david@intel-compute-stick:/var/www/html/043\$ telnet localhost 80
Trying ::1...
Connected to localhost.
Escape character is '\^]'.
GET /043/form1.php?text1=THIS_IS_TEXT_43 HTTP/1.1
host: localhost
Cookie: Cookie43a=DIES_IST_COOKIE_43a

HTTP/1.1 200 OK
Date: Wed, 11 May 2022 15:50:08 GMT
Server: Apache/2.4.52 (Debian)
Set-Cookie: PHPSESSID=gn1lnus7ktj6kou706o1e0s951; path=/
Expires: Thu, 19 Nov 1981 08:52:00 GMT
Cache-Control: no-store, no-cache, must-revalidate, post-check=0, pre-check=0
Pragma: no-cache
Set-Cookie: Cookie43=THIS_IS_COOKIE_43; expires=Wed, 11-May-2022 16:50:09 GMT; Max-Age=3600
Vary: Accept-Encoding
Content-Length: 172
Content-Type: text/html; charset=UTF-8


<form action="./form1.php" method="GET">
<input type="text" name="text1"></input>
<input type="submit"></input>
</form>

0THIS_IS_TEXT_43<br>
<br>
DIES_IST_COOKIE_43a<br>

Connection closed by foreign host.
david@intel-compute-stick:/var/www/html/043\$

043/output03.txt
2<br>
45<br>
53<br>
35<br>
49<br>
42<br>
61<br>
19<br>
37<br>
39<br>
58<br>
11<br>
47<br>
32<br>
22<br>
20<br>
14<br>
5<br>
46<br>
30<br>
21<br>
28<br>
44<br>
8<br>
16<br>
50<br>
7<br>
1<br>
38<br>
13<br>
<br><br>

2<br>
45<br>
53<br>
35<br>
49<br>
42<br>
61<br>
19<br>
37<br>
39<br>
58<br>
11<br>
47<br>
32<br>
22<br>
20<br>
14<br>
17<br>
36<br>
48<br>
5<br>
0<br>
57<br>
26<br>
31<br>
44<br>
63<br>
62<br>
6<br>
29<br>
<br><br>

5<br>
46<br>
30<br>
19<br>
21<br>
42<br>
28<br>
44<br>
8<br>
14<br>
16<br>
61<br>
50<br>
7<br>
49<br>
1<br>
38<br>
13<br>
17<br>
36<br>
48<br>
0<br>
20<br>
57<br>
26<br>
31<br>
63<br>
62<br>
6<br>
29<br>
<br><br>

49<br>
42<br>
61<br>
19<br>
14<br>
<br><br>

49<br>
42<br>
20<br>
14<br>
<br><br>

5<br>
14<br>
20<br>
42<br>
44<br>
49<br>
<br><br>

5<br>
14<br>
20<br>
42<br>
44<br>
49<br>
<br><br>

5<br>
14<br>
19<br>
42<br>
44<br>
49<br>
61<br>
<br><br>

5<br>
14<br>
20<br>
42<br>
44<br>
49<br>
<br><br>

14<br>
19<br>
20<br>
42<br>
49<br>
61<br>
<br><br>

14<br>
19<br>
20<br>
42<br>
49<br>
61<br>
<br><br>

043/output04.txt
<?php
include ('/home/david/mysqldata.php');

\$handle = mysql_connect ("localhost", \$MYSQL_NAME, \$MYSQL_PASSWORD);

mysql_query ("CREATE DATABASE quantity043", \$handle);

mysql_select_db ("quantity043", \$handle);

mysql_query ("CREATE TABLE a (x INTEGER)", \$handle);
mysql_query ("CREATE TABLE b (x INTEGER)", \$handle);
mysql_query ("CREATE TABLE c (x INTEGER)", \$handle);

for (\$i = 0;  \$i < 20;  \$i++) {
    mysql_query ("INSERT INTO a VALUES ("" . rand () % 64 . "")", \$handle);
    mysql_query ("INSERT INTO b VALUES ("" . rand () % 64 . "")", \$handle);
    mysql_query ("INSERT INTO c VALUES ("" . rand () % 64 . "")", \$handle);
}

/* a OR b */
\$result = mysql_query ("SELECT x FROM (SELECT x FROM a UNION SELECT x FROM b) x");
while (\$row = mysql_fetch_row (\$result))
    echo \$row [0] . "<br>n";
echo "<br><br>nn";
/* a OR c */
\$result = mysql_query ("SELECT x FROM (SELECT x FROM a UNION SELECT x FROM c) x");
while (\$row = mysql_fetch_row (\$result))
    echo \$row [0] . "<br>n";
echo "<br><br>nn";
/* b OR c */
\$result = mysql_query ("SELECT x FROM (SELECT x FROM b UNION SELECT x FROM c) x");
while (\$row = mysql_fetch_row (\$result))
    echo \$row [0] . "<br>n";
echo "<br><br>nn";
/* a AND b */
\$result = mysql_query ("SELECT x FROM (SELECT x FROM a INTERSECT SELECT x FROM b) x");
while (\$row = mysql_fetch_row (\$result))
    echo \$row [0] . "<br>n";
echo "<br><br>nn";
/* a AND c */
\$result = mysql_query ("SELECT x FROM (SELECT x FROM a INTERSECT SELECT x FROM c) x");
while (\$row = mysql_fetch_row (\$result))
    echo \$row [0] . "<br>n";
echo "<br><br>nn";
/* (a OR b) AND c*/
/*
SELECT x FROM (
    SELECT x FROM (SELECT x FROM a UNION SELECT x FROM b) x
    INTERSECT
    SELECT x FROM c
) x ORDER BY x
*/
\$result = mysql_query ("SELECT x FROM (SELECT x FROM (SELECT x FROM a UNION SELECT x FROM b) x INTERSECT SELECT x FROM c) x ORDER BY x");
while (\$row = mysql_fetch_row (\$result))
    echo \$row [0] . "<br>n";
echo "<br><br>nn";

/* a AND c OR b AND c */
/*
SELECT x FROM (
    SELECT x FROM (SELECT x FROM a INTERSECT SELECT x FROM c) x
    UNION
    SELECT x FROM (SELECT x FROM b INTERSECT SELECT x FROM c) x
) x ORDER BY x
*/
\$result = mysql_query ("SELECT x FROM (SELECT x FROM (SELECT x FROM a INTERSECT SELECT x FROM c) x UNION SELECT x FROM (SELECT x FROM b INTERSECT SELECT x FROM c) x) x ORDER BY x");
while (\$row = mysql_fetch_row (\$result))
    echo \$row [0] . "<br>n";
echo "<br><br>nn";

/* (a OR c) AND b*/
/*
SELECT x FROM (
    SELECT x FROM (SELECT x FROM a UNION SELECT x FROM c) x
    INTERSECT
    SELECT x FROM b
) x ORDER BY x
*/
\$result = mysql_query ("SELECT x FROM (SELECT x FROM (SELECT x FROM a UNION SELECT x FROM c) x INTERSECT SELECT x FROM b) x ORDER BY x");
while (\$row = mysql_fetch_row (\$result))
    echo \$row [0] . "<br>n";
echo "<br><br>nn";

/* a AND b or b AND c*/
/*
SELECT x FROM (
    SELECT x FROM (SELECT x FROM a INTERSECT SELECT x FROM c) x
    UNION
    SELECT x FROM (SELECT x FROM b INTERSECT SELECT x FROM c) x
) x ORDER BY x
*/
\$result = mysql_query ("SELECT x FROM (SELECT x FROM (SELECT x FROM a INTERSECT SELECT x FROM c) x UNION SELECT x FROM (SELECT x FROM b INTERSECT SELECT x FROM c) x) x ORDER BY x");
while (\$row = mysql_fetch_row (\$result))
    echo \$row [0] . "<br>n";
echo "<br><br>nn";

/* (b OR c) AND a */
/*
SELECT x FROM (
    SELECT x FROM (SELECT x FROM b UNION SELECT x FROM c) x
    INTERSECT
    SELECT x FROM as
) x ORDER BY x
*/

\$result = mysql_query ("SELECT x FROM (SELECT x FROM (SELECT x FROM b UNION SELECT x FROM c) x INTERSECT SELECT x FROM a) x ORDER BY x");
while (\$row = mysql_fetch_row (\$result))
    echo \$row [0] . "<br>n";
echo "<br><br>nn";

/* b AND a OR c AND a
SELECT x FROM (
    SELECT x FROM (SELECT x FROM b INTERSECT SELECT x FROM a) x
    UNION
    SELECT x FROM (SELECT x FROM c INTERSECT SELECT x FROM a) x
) x ORDER BY x
*/
\$result = mysql_query ("SELECT x FROM (SELECT x FROM (SELECT x FROM b INTERSECT SELECT x FROM a) x UNION SELECT x FROM (SELECT x FROM c INTERSECT SELECT x FROM a) x) x ORDER BY x");
while (\$row = mysql_fetch_row (\$result))
    echo \$row [0] . "<br>n";
echo "<br><br>nn";

mysql_close (\$handle);
?>
043/quantitysql.php
<?php
include ('/home/david/mysqldata.php');

\$handle = mysql_connect ("localhost", \$MYSQL_NAME, \$MYSQL_PASSWORD);

mysql_select_db ("test044", \$handle);

mysql_query ("INSERT INTO def VALUES ("def", "def")", \$handle);

\$result = mysql_query ("SELECT * FROM abc INNER JOIN def ON abc.name1 = def.name3", \$handle);
while  (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["name1"] . " " . \$row ["name2"] . " " . \$row ["name3"] . " " . \$row ["name4"] . "<br>n";

\$result = mysql_query ("SELECT * FROM abc LEFT JOIN def ON abc.name2 = def.name4", \$handle);
while (\$row = mysql_fetch_row (\$result))
    echo \$row [0] . " " . \$row [1] . " " . \$row [2] . " " . \$row [3] . "<br>n";

mysql_close (\$handle);
?>
044/database.php
<?php
session_start ();
?>

<form method="GET" action="./form1.php">
<input type="text" name="text1"></input>
<input type="submit"></input>
</form>

<?php
setcookie ("Cookie44", "THIS_IS_COOKIE_FOURTY_FOUR", time () + 3600);

echo session_id () . "<br>n";
echo htmlentities (\$_GET ["text1"]) . "<br>n";
echo htmlentities (\$_COOKIE ["Cookie44"]) . "<br>n";
echo htmlentities (\$_COOKIE ["Cookie44a"]) . "<br>n";
?>
044/form1.php
GET /044/form1.php?text1=THIS_IS_MSG_FOURTY_FOR HTTP/1.1
host: localhost
Cookie: Cookie44a=THIS_IS_COOKED_FOURTY_FOUR_TIMES
044/httprequest01.txt
david@intel-compute-stick:~\$ mysql -u root -p
Enter password:
Welcome to the MariaDB monitor.  Commands end with ; or g.
Your MariaDB connection id is 2440
Server version: 10.5.12-MariaDB-0+deb11u1 Debian 11

Copyright (c) 2000, 2018, Oracle, MariaDB Corporation Ab and others.

Type 'help;' or 'h' for help. Type 'c' to clear the current input statement.

MariaDB [(none)]> SHOW DATABASES;
+--------------------+
| Database           |
+--------------------+
| information_schema |
| menge001           |
| menge002           |
| menge003           |
| menge004           |
| menge006           |
| menge007           |
| menge008           |
| mysoc1             |
| mysocial_database  |
| mysql              |
| mytest             |
| performance_schema |
| quantity001        |
| quantity002        |
| quantity003        |
| quantity004        |
| quantity007        |
| quantity008        |
| quantity035        |
| quantity035a       |
| quantity036        |
| quantity037        |
| quantity038        |
| quantity038a       |
| quantity039        |
| quantity040        |
| quantity041        |
| quantity043        |
| quantity30         |
| quantity31         |
| taadsasda          |
| test001            |
| test002            |
| test003            |
| test004            |
| test005            |
| test006            |
| test007            |
| test008            |
| test009            |
| test010            |
| test011            |
| test012            |
| test013            |
| test014            |
| test015            |
| test016            |
| test019            |
| test020            |
| test021            |
| test022            |
| test023            |
| test024            |
| test025            |
| test026            |
| test027            |
| test028            |
| test030            |
| test031            |
| test032            |
| test033            |
| test034            |
| test035            |
| test036            |
| test037            |
| test038            |
| test039            |
| test040            |
| test041            |
| test042            |
| test043            |
+--------------------+
72 rows in set (0.044 sec)

MariaDB [(none)]> CREATE DATABASE test044
    -> ;
Query OK, 1 row affected (0.002 sec)

MariaDB [(none)]> USE test044;
Database changed
MariaDB [test044]> CREATE TABLE abc (name1 VARCHAR (32), name2 VARCHAR (32));
Query OK, 0 rows affected (0.082 sec)

MariaDB [test044]> CREATE TABLE def (name3 VARCHAR (32), name4 VARCHAR (32));
Query OK, 0 rows affected (0.055 sec)

MariaDB [test044]> INSERT INTO abc (name1, name2) VALUES ("001", "001");
Query OK, 1 row affected (0.042 sec)

MariaDB [test044]> INSERT INTO abc (name1, name2) VALUES ("001", "002");
Query OK, 1 row affected (0.028 sec)

MariaDB [test044]> INSERT INTO abc (name1, name2) VALUES ("002", "001");
Query OK, 1 row affected (0.030 sec)

MariaDB [test044]> INSERT INTO abc (name2, name1) VALUES ("002", "002");
Query OK, 1 row affected (0.033 sec)

MariaDB [test044]> INSERT INTO def (name3, name4) VALUES ("001", "001");
Query OK, 1 row affected (0.026 sec)

MariaDB [test044]> INSERT INTO def (name4, name3) VALUES ("002", "001");
Query OK, 1 row affected (0.027 sec)

MariaDB [test044]> INSERT INTO def (name3, name3) VALUES ("abc", "def");
ERROR 1110 (42000): Column 'name3' specified twice
MariaDB [test044]> INSERT INTO def (name3, name4) VALUES ("abc", "def");
Query OK, 1 row affected (0.027 sec)

MariaDB [test044]> SELECT * FROM abc;
+-------+-------+
| name1 | name2 |
+-------+-------+
| 001   | 001   |
| 001   | 002   |
| 002   | 001   |
| 002   | 002   |
+-------+-------+
4 rows in set (0.001 sec)

MariaDB [test044]> SELECT * FROM def;
+-------+-------+
| name3 | name4 |
+-------+-------+
| 001   | 001   |
| 001   | 002   |
| abc   | def   |
+-------+-------+
3 rows in set (0.001 sec)

MariaDB [test044]> SELECT * FROM abc JOIN def;
+-------+-------+-------+-------+
| name1 | name2 | name3 | name4 |
+-------+-------+-------+-------+
| 001   | 001   | 001   | 001   |
| 001   | 001   | 001   | 002   |
| 001   | 001   | abc   | def   |
| 001   | 002   | 001   | 001   |
| 001   | 002   | 001   | 002   |
| 001   | 002   | abc   | def   |
| 002   | 001   | 001   | 001   |
| 002   | 001   | 001   | 002   |
| 002   | 001   | abc   | def   |
| 002   | 002   | 001   | 001   |
| 002   | 002   | 001   | 002   |
| 002   | 002   | abc   | def   |
+-------+-------+-------+-------+
12 rows in set (0.001 sec)

MariaDB [test044]> SELECT * FROM abc INNER JOIN def ON abc.name1 = def.name3;
+-------+-------+-------+-------+
| name1 | name2 | name3 | name4 |
+-------+-------+-------+-------+
| 001   | 001   | 001   | 001   |
| 001   | 001   | 001   | 002   |
| 001   | 002   | 001   | 001   |
| 001   | 002   | 001   | 002   |
+-------+-------+-------+-------+
4 rows in set (0.002 sec)

MariaDB [test044]> SELECT * FROM abc RIGHT JOIN def ON abc.name2 = def.name4;
+-------+-------+-------+-------+
| name1 | name2 | name3 | name4 |
+-------+-------+-------+-------+
| 001   | 001   | 001   | 001   |
| 001   | 002   | 001   | 002   |
| 002   | 001   | 001   | 001   |
| 002   | 002   | 001   | 002   |
| NULL  | NULL  | abc   | def   |
+-------+-------+-------+-------+
5 rows in set (0.002 sec)

MariaDB [test044]> SELECT * FROM abc LEFT JOIN def ON abc.name1 = def.name3;
+-------+-------+-------+-------+
| name1 | name2 | name3 | name4 |
+-------+-------+-------+-------+
| 001   | 001   | 001   | 001   |
| 001   | 002   | 001   | 001   |
| 001   | 001   | 001   | 002   |
| 001   | 002   | 001   | 002   |
| 002   | 001   | NULL  | NULL  |
| 002   | 002   | NULL  | NULL  |
+-------+-------+-------+-------+
6 rows in set (0.002 sec)

MariaDB [test044]> QUIT
Bye
david@intel-compute-stick:~\$

044/output01.txt
001 001 001 001<br>
001 002 001 001<br>
001 001 001 002<br>
001 002 001 002<br>
001 001 001 001<br>
002 001 001 001<br>
001 002 001 002<br>
002 002 001 002<br>
044/output02.txt
david@intel-compute-stick:/var/www/html/044\$ telnet localhost 80
Trying ::1...
Connected to localhost.
Escape character is '\^]'.
GET /044/form1.php?text1=THIS_IS_MSG_FOURTY_FOR HTTP/1.1
host: localhost
Cookie: Cookie44a=THIS_IS_COOKED_FOURTY_FOUR_TIMES

HTTP/1.1 200 OK
Date: Thu, 12 May 2022 11:30:00 GMT
Server: Apache/2.4.52 (Debian)
Set-Cookie: PHPSESSID=kjta3t2i214c9v43eclpkpb606; path=/
Expires: Thu, 19 Nov 1981 08:52:00 GMT
Cache-Control: no-store, no-cache, must-revalidate, post-check=0, pre-check=0
Pragma: no-cache
Set-Cookie: Cookie44=THIS_IS_COOKIE_FOURTY_FOUR; expires=Thu, 12-May-2022 12:30:01 GMT; Max-Age=3600
Vary: Accept-Encoding
Content-Length: 222
Content-Type: text/html; charset=UTF-8


<form method="GET" action="./form1.php">
<input type="text" name="text1"></input>
<input type="submit"></input>
</form>

kjta3t2i214c9v43eclpkpb606<br>
THIS_IS_MSG_FOURTY_FOR<br>
<br>
THIS_IS_COOKED_FOURTY_FOUR_TIMES<br>

Connection closed by foreign host.
david@intel-compute-stick:/var/www/html/044\$

044/output03.txt
36<br>
43<br>
18<br>
8<br>
57<br>
23<br>
32<br>
63<br>
42<br>
59<br>
41<br>
<br><br>

17<br>
43<br>
37<br>
8<br>
57<br>
23<br>
63<br>
25<br>
21<br>
<br><br>

9<br>
7<br>
50<br>
23<br>
60<br>
13<br>
8<br>
2<br>
40<br>
57<br>
63<br>
43<br>
<br><br>

17<br>
36<br>
43<br>
37<br>
62<br>
18<br>
10<br>
19<br>
8<br>
57<br>
45<br>
23<br>
32<br>
63<br>
6<br>
1<br>
42<br>
25<br>
21<br>
16<br>
54<br>
27<br>
34<br>
59<br>
41<br>
15<br>
9<br>
58<br>
3<br>
48<br>
7<br>
35<br>
50<br>
60<br>
13<br>
61<br>
38<br>
28<br>
2<br>
40<br>
20<br>
<br><br>

17<br>
36<br>
43<br>
37<br>
62<br>
18<br>
10<br>
19<br>
8<br>
57<br>
45<br>
23<br>
32<br>
63<br>
6<br>
1<br>
42<br>
25<br>
21<br>
16<br>
54<br>
27<br>
34<br>
59<br>
41<br>
15<br>
52<br>
29<br>
13<br>
9<br>
4<br>
46<br>
56<br>
53<br>
7<br>
60<br>
5<br>
50<br>
30<br>
14<br>
0<br>
31<br>
2<br>
40<br>
<br><br>

9<br>
58<br>
41<br>
3<br>
48<br>
32<br>
7<br>
18<br>
35<br>
50<br>
23<br>
60<br>
13<br>
42<br>
8<br>
61<br>
38<br>
28<br>
2<br>
40<br>
57<br>
36<br>
63<br>
20<br>
43<br>
59<br>
52<br>
29<br>
4<br>
46<br>
56<br>
53<br>
5<br>
30<br>
14<br>
37<br>
0<br>
31<br>
25<br>
21<br>
17<br>
<br><br>

13<br>
17<br>
2<br>
21<br>
23<br>
25<br>
37<br>
40<br>
43<br>
50<br>
57<br>
60<br>
63<br>
7<br>
8<br>
9<br>
<br><br>

13<br>
17<br>
2<br>
21<br>
23<br>
25<br>
37<br>
40<br>
43<br>
50<br>
57<br>
60<br>
63<br>
7<br>
8<br>
9<br>
<br><br>

13<br>
18<br>
2<br>
23<br>
32<br>
36<br>
40<br>
41<br>
42<br>
43<br>
50<br>
57<br>
59<br>
60<br>
63<br>
7<br>
8<br>
9<br>
<br><br>

13<br>
17<br>
2<br>
21<br>
23<br>
25<br>
37<br>
40<br>
43<br>
50<br>
57<br>
60<br>
63<br>
7<br>
8<br>
9<br>
<br><br>

17<br>
18<br>
21<br>
23<br>
25<br>
32<br>
36<br>
37<br>
41<br>
42<br>
43<br>
57<br>
59<br>
63<br>
8<br>
<br><br>

17<br>
18<br>
21<br>
23<br>
25<br>
32<br>
36<br>
37<br>
41<br>
42<br>
43<br>
57<br>
59<br>
63<br>
8<br>
<br><br>

044/output04.txt
<?php
include ('/home/david/mysqldata.php');

\$handle = mysql_connect ("localhost", \$MYSQL_NAME, \$MYSQL_PASSWORD);

mysql_query ("CREATE DATABASE quantity044", \$handle);

mysql_select_db ("quantity044", \$handle);

mysql_query ("CREATE TABLE a (x VARCHAR (4))", \$handle);
mysql_query ("CREATE TABLE b (x VARCHAR (4))", \$handle);
mysql_query ("CREATE TABLE c (x VARCHAR (4))", \$handle);

for (\$i = 0;  \$i < 20;   \$i++) {
    mysql_query ("INSERT INTO a VALUES ("" . rand () % 64 . "")", \$handle);
    mysql_query ("INSERT INTO b VALUES ("" . rand () % 64 . "")", \$handle);
    mysql_query ("INSERT INTO c VALUES ("" . rand () % 64 . "")", \$handle);
}

/*
a AND b
a AND c
b AND c

a OR b
a OR c
b OR c

(a OR b) AND c = a AND c OR b AND c
(a OR c) AND b = a AND c OR c AND b
(b OR c) AND a = b AND a OR c AND a
*/

/*
a AND b
a AND c
b AND c

SELECT x FROM (SELECT x FROM a INTERSECT SELECT x FROM b) x
SELECT x FROM (SELECT x FROM a INTERSECT SELECT x FROM c) x
SELECT x FROM (SELECT x FROM b INTERSECT SELECT x FROM c) x
*/

/*
a OR b
a OR c
b OR c

SELECT x FROM (SELECT x FROM a UNION SELECT x FROM b) x
SELECT x FROM (SELECT x FROM a UNION SELECT x FROM c) x
SELECT x FROM (SELECT x FROM b UNION SELECT x FROM c) x
*/

/*
(a OR b) AND c = a AND c OR b AND c

SELECT x FROM (
    SELECT x FROM ( SELECT x FROM a UNION SELECT b) x
    INTERSECT
    SELECT x FROM c
) x ORDER BY x

SELECT x FROM (
    SELECT x FROM (SELECT x FROM a INTERSECT SELECT x FROM c) x
    UNION
    SELECT x FROM (SELECT x FROM b INTERSECT SELECT x FROM c) x
) x ORDER BY x
*/

/*
(a OR c) AND b = a AND c OR c AND b

SELECT x FROM (
    SELECT x FROM (SELECT x FROM a UNION SELECT x FROM c) x
    INTERSECT
    SELECT x FROM b
) x ORDER BY x

SELECT x FROM (
    SELECT x FROM (SELECT x FROM a INTERSECT SELECT x FROM c) x
    UNION
    SELECT x FROM (SELECT x FROm c INTERSECT SELECT x FROM b) x
) x ORDER BY x
*/

/*
(b OR c) AND a = b AND a OR c AND a

SELECT x FROM (
    SELECT x FROM (SELECT x FROM b UNION SELECT x FROM c) x
    INTERSECT
    SELECT x FROM a
) x ORDER BY x

SELECT x FROM (
    SELECT x FROM (SELECT x FROM b INTERSECT SELECT x FROM a) x
    UNION
    SELECT x FROM (SELECT x FROM c INTERSECT SELECT x FROM a) x
) x ORDER BY x
*/

\$result = mysql_query ("SELECT x FROM (SELECT x FROM a INTERSECT SELECT x FROM b) x");
while (\$row = mysql_fetch_row (\$result))
    echo \$row [0] . "<br>n";
echo "<br><br>nn";
\$result = mysql_query ("SELECT x FROM (SELECT x FROM a INTERSECT SELECT x FROM c) x");
while (\$row = mysql_fetch_row (\$result))
    echo \$row [0] . "<br>n";
echo "<br><br>nn";
\$result = mysql_query ("SELECT x FROM (SELECT x FROM b INTERSECT SELECT x FROM c) x");
while (\$row = mysql_fetch_row (\$result))
    echo \$row [0] . "<br>n";
echo "<br><br>nn";

\$result = mysql_query ("SELECT x FROM (SELECT x FROM a UNION SELECT x FROM b) x");
while (\$row = mysql_fetch_row (\$result))
    echo \$row [0] . "<br>n";
echo "<br><br>nn";
\$result = mysql_query ("SELECT x FROM (SELECT x FROM a UNION SELECT x FROM c) x");
while (\$row = mysql_fetch_row (\$result))
    echo \$row [0] . "<br>n";
echo "<br><br>nn";
\$result = mysql_query ("SELECT x FROM (SELECT x FROM b UNION SELECT x FROM c) x");
while (\$row = mysql_fetch_row (\$result))
    echo \$row [0] . "<br>n";
echo "<br><br>nn";
\$result = mysql_query ("SELECT x FROM (SELECT x FROM ( SELECT x FROM a UNION SELECT x FROM b) x INTERSECT SELECT x FROM c) x ORDER BY x");
while (\$row = mysql_fetch_row (\$result))
    echo \$row [0] . "<br>n";
echo "<br><br>nn";

\$result = mysql_query ("SELECT x FROM (SELECT x FROM (SELECT x FROM a INTERSECT SELECT x FROM c) x UNION SELECT x FROM (SELECT x FROM b INTERSECT SELECT x FROM c) x) x ORDER BY x");
while (\$row = mysql_fetch_row (\$result))
    echo \$row [0] . "<br>n";
echo "<br><br>nn";

\$result = mysql_query ("SELECT x FROM (SELECT x FROM (SELECT x FROM a UNION SELECT x FROM c) x INTERSECT SELECT x FROM b) x ORDER BY x");
while (\$row = mysql_fetch_row (\$result))
    echo \$row [0] . "<br>n";
echo "<br><br>nn";

\$result = mysql_query ("SELECT x FROM (SELECT x FROM (SELECT x FROM a INTERSECT SELECT x FROM c) x UNION SELECT x FROM (SELECT x FROm c INTERSECT SELECT x FROM b) x) x ORDER BY x");
while (\$row = mysql_fetch_row (\$result))
    echo \$row [0] . "<br>n";
echo "<br><br>nn";

\$result = mysql_query ("SELECT x FROM (SELECT x FROM (SELECT x FROM b UNION SELECT x FROM c) x INTERSECT SELECT x FROM a) x ORDER BY x");
while (\$row = mysql_fetch_row (\$result))
    echo \$row [0] . "<br>n";
echo "<br><br>nn";

\$result = mysql_query ("SELECT x FROM (SELECT x FROM (SELECT x FROM b INTERSECT SELECT x FROM a) x UNION SELECT x FROM (SELECT x FROM c INTERSECT SELECT x FROM a) x) x ORDER BY x");
while (\$row = mysql_fetch_row (\$result))
    echo \$row [0] . "<br>n";
echo "<br><br>nn";

mysql_close (\$handle);
?>
044/quantitysql.php
<?php
include ('/home/david/mysqldata.php');

\$handle = mysql_connect ("localhost", \$MYSQL_NAME, \$MYSQL_PASSWORD);

mysql_select_db ("test045", \$handle);

mysql_query ("INSERT INTO def VALUES ("def", "def")", \$handle);

\$result = mysql_query  ("SELECT * FROM abc INNER JOIN def ON abc.name1 = def.name3", \$handle);
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["name1"] . " " . \$row ["name2"] . " " . \$row ["name3"] . " " . \$row ["name4"] . "<br>n";
\$result = mysql_query ("SELECT * FROM abc LEFT JOIN def ON abc.name2 = def.name4", \$handle);
while (\$row = mysql_fetch_row (\$result))
    echo \$row [0] . " " . \$row [1] . " " . \$row [2] . " " . \$row [3] . "<br>n";

mysql_close (\$handle);
?>
045/database.php
<?php
session_start ();
?>

<form method="GET" action="./form1.php">
<input type="password" name="password1"></input>
<input type="submit"></input>
</form>

<?php
echo session_id () . "<br>n";

setcookie ("Cookie45", "DIES_IST_COOKIE_45", time () + 3600);

echo htmlentities (\$_COOKIE ["Cookie45"]) . "<br>n";
echo htmlentities (\$_COOKIE ["Cookie45a"]) . "<br>n";
echo htmlentities (\$_GET ["password1"]) . "<br>n";

?>
045/form1.php
GET /045/form1.php?password1=DIES_IST_PASSWORT_45 HTTP/1.1
host: localhost
Cookie: Cookie45a=DIES_IST_COOKIE_45a
045/httprequest01.txt
david@intel-compute-stick:~\$ mysql -u root -p
Enter password:
Welcome to the MariaDB monitor.  Commands end with ; or g.
Your MariaDB connection id is 2508
Server version: 10.5.12-MariaDB-0+deb11u1 Debian 11

Copyright (c) 2000, 2018, Oracle, MariaDB Corporation Ab and others.

Type 'help;' or 'h' for help. Type 'c' to clear the current input statement.

MariaDB [(none)]> CREATE DATABASE test045
    -> ;
Query OK, 1 row affected (0.002 sec)

MariaDB [(none)]> USE test045
Database changed
MariaDB [test045]> CREATE TABLE abc (name1 VARCHAR (32), name2 VARCHAR (32));
Query OK, 0 rows affected (0.067 sec)

MariaDB [test045]> CREATE TABLE def (name3 VARCHAR (32), name4 VARCHAR (32));
Query OK, 0 rows affected (0.053 sec)

MariaDB [test045]> INSERT INTO abc VALUES ("001", "001");
Query OK, 1 row affected (0.030 sec)

MariaDB [test045]> INSERT INTO abc VALUES ("001", "002");
Query OK, 1 row affected (0.030 sec)

MariaDB [test045]> INSERT INTO abc VALUES ("002", "001");
Query OK, 1 row affected (0.024 sec)

MariaDB [test045]> INSERT INTO abc VALUES ("002", "002");
Query OK, 1 row affected (0.030 sec)

MariaDB [test045]> SELECT * FROM abc;
+-------+-------+
| name1 | name2 |
+-------+-------+
| 001   | 001   |
| 001   | 002   |
| 002   | 001   |
| 002   | 002   |
+-------+-------+
4 rows in set (0.001 sec)

MariaDB [test045]> SELECT * FROM abc JOIN def;
Empty set (0.003 sec)

MariaDB [test045]> INSERT INTO def VALUES ("001", "001");
Query OK, 1 row affected (0.029 sec)

MariaDB [test045]> INSERT INTO def VALUES ("001", "002");
Query OK, 1 row affected (0.025 sec)

MariaDB [test045]> INSERT INTO def VALUES ("abc", "def");
Query OK, 1 row affected (0.028 sec)

MariaDB [test045]> SELECT * FROM abc JOIN def;
+-------+-------+-------+-------+
| name1 | name2 | name3 | name4 |
+-------+-------+-------+-------+
| 001   | 001   | 001   | 001   |
| 001   | 001   | 001   | 002   |
| 001   | 001   | abc   | def   |
| 001   | 002   | 001   | 001   |
| 001   | 002   | 001   | 002   |
| 001   | 002   | abc   | def   |
| 002   | 001   | 001   | 001   |
| 002   | 001   | 001   | 002   |
| 002   | 001   | abc   | def   |
| 002   | 002   | 001   | 001   |
| 002   | 002   | 001   | 002   |
| 002   | 002   | abc   | def   |
+-------+-------+-------+-------+
12 rows in set (0.002 sec)

MariaDB [test045]> SELECT * FROM abc INNER JOIN def ON abc.name1 = def.name3;
+-------+-------+-------+-------+
| name1 | name2 | name3 | name4 |
+-------+-------+-------+-------+
| 001   | 001   | 001   | 001   |
| 001   | 001   | 001   | 002   |
| 001   | 002   | 001   | 001   |
| 001   | 002   | 001   | 002   |
+-------+-------+-------+-------+
4 rows in set (0.002 sec)

MariaDB [test045]> SELECT * FROM abc LEFT JOIN def ON abc.name1 = def.name3;
+-------+-------+-------+-------+
| name1 | name2 | name3 | name4 |
+-------+-------+-------+-------+
| 001   | 001   | 001   | 001   |
| 001   | 002   | 001   | 001   |
| 001   | 001   | 001   | 002   |
| 001   | 002   | 001   | 002   |
| 002   | 001   | NULL  | NULL  |
| 002   | 002   | NULL  | NULL  |
+-------+-------+-------+-------+
6 rows in set (0.002 sec)

MariaDB [test045]> SELECT * FROM abc RIGHT JOIN def abc.name1 = def.name3;
ERROR 1066 (42000): Not unique table/alias: 'abc'
MariaDB [test045]> SELECT * FROM abc RIGHT JOIN def ON abc.name1 = def.name3;
+-------+-------+-------+-------+
| name1 | name2 | name3 | name4 |
+-------+-------+-------+-------+
| 001   | 001   | 001   | 001   |
| 001   | 001   | 001   | 002   |
| 001   | 002   | 001   | 001   |
| 001   | 002   | 001   | 002   |
| NULL  | NULL  | abc   | def   |
+-------+-------+-------+-------+
5 rows in set (0.002 sec)

MariaDB [test045]> QUIT
Bye
david@intel-compute-stick:~\$

045/output01.txt
001 001 001 001<br>
001 002 001 001<br>
001 001 001 002<br>
001 002 001 002<br>
001 001 001 001<br>
002 001 001 001<br>
001 002 001 002<br>
002 002 001 002<br>
045/output02.txt
david@intel-compute-stick:/var/www/html/045\$ telnet localhost 80
Trying ::1...
Connected to localhost.
Escape character is '\^]'.
GET /045/form1.php?password1=DIES_IST_PASSWORT_45 HTTP/1.1
host: localhost
Cookie: Cookie45a=DIES_IST_COOKIE_45a

HTTP/1.1 200 OK
Date: Sat, 14 May 2022 12:28:41 GMT
Server: Apache/2.4.52 (Debian)
Set-Cookie: PHPSESSID=aa8pgt09bv31fpe5i04i328cm7; path=/
Expires: Thu, 19 Nov 1981 08:52:00 GMT
Cache-Control: no-store, no-cache, must-revalidate, post-check=0, pre-check=0
Pragma: no-cache
Set-Cookie: Cookie45=DIES_IST_COOKIE_45; expires=Sat, 14-May-2022 13:28:42 GMT; Max-Age=3600
Vary: Accept-Encoding
Content-Length: 215
Content-Type: text/html; charset=UTF-8


<form method="GET" action="./form1.php">
<input type="password" name="password1"></input>
<input type="submit"></input>
</form>

aa8pgt09bv31fpe5i04i328cm7<br>
<br>
DIES_IST_COOKIE_45a<br>
DIES_IST_PASSWORT_45<br>
Connection closed by foreign host.
david@intel-compute-stick:/var/www/html/045\$

045/output03.txt
34<br>
27<br>
57<br>
20<br>
59<br>
42<br>
55<br>
11<br>
46<br>
56<br>
39<br>
51<br>
58<br>
40<br>
49<br>
24<br>
3<br>
38<br>
53<br>
61<br>
21<br>
54<br>
41<br>
8<br>
26<br>
7<br>
5<br>
63<br>
19<br>
14<br>
48<br>
33<br>
<br><br>

34<br>
27<br>
57<br>
20<br>
59<br>
42<br>
55<br>
11<br>
46<br>
56<br>
39<br>
51<br>
58<br>
40<br>
49<br>
24<br>
3<br>
38<br>
12<br>
7<br>
45<br>
9<br>
43<br>
25<br>
14<br>
33<br>
15<br>
1<br>
<br><br>

38<br>
53<br>
61<br>
21<br>
55<br>
54<br>
41<br>
8<br>
26<br>
7<br>
42<br>
5<br>
63<br>
19<br>
14<br>
56<br>
48<br>
59<br>
33<br>
12<br>
20<br>
45<br>
9<br>
43<br>
34<br>
51<br>
25<br>
11<br>
24<br>
15<br>
1<br>
27<br>
<br><br>

59<br>
42<br>
55<br>
56<br>
38<br>
<br><br>

34<br>
27<br>
20<br>
11<br>
56<br>
51<br>
24<br>
38<br>
<br><br>

38<br>
7<br>
14<br>
56<br>
33<br>
<br><br>

11<br>
14<br>
20<br>
24<br>
27<br>
33<br>
34<br>
38<br>
51<br>
56<br>
7<br>
<br><br>

11<br>
14<br>
20<br>
24<br>
27<br>
33<br>
34<br>
38<br>
51<br>
56<br>
7<br>
<br><br>

14<br>
33<br>
38<br>
42<br>
55<br>
56<br>
59<br>
7<br>
<br><br>

14<br>
33<br>
38<br>
42<br>
55<br>
56<br>
59<br>
7<br>
<br><br>

11<br>
20<br>
24<br>
27<br>
34<br>
38<br>
42<br>
51<br>
55<br>
56<br>
59<br>
<br><br>

11<br>
20<br>
24<br>
27<br>
34<br>
38<br>
42<br>
51<br>
55<br>
56<br>
59<br>
<br><br>

045/output04.txt
<?php
include ('/home/david/mysqldata.php');

\$handle = mysql_connect ("localhost", \$MYSQL_NAME, \$MYSQL_PASSWORD);

mysql_query ("CREATE DATABASE quantity045", \$handle);

mysql_select_db ("quantity045", \$handle);

mysql_query ("CREATE TABLE a (x VARCHAR (4))", \$handle);
mysql_query ("CREATE TABLE b (x VARCHAR (4))", \$handle);
mysql_query ("CREATE TABLE c (x VARCHAR (4))", \$handle);

for (\$i = 0;  \$i < 20;  \$i++) {
    mysql_query ("INSERT INTO a VALUES ("" . rand () % 64 . "")", \$handle);
    mysql_query ("INSERT INTO b VALUES ("" . rand () % 64 . "")", \$handle);
    mysql_query ("INSERT INTO c VALUES ("" . rand () % 64 . "")", \$handle);
}

/*
a OR b
a OR c
b OR c

a AND b
a AND c
b AND c

(a OR b) AND c = a AND c OR b AND c
(a OR c) AND b = a AND b OR c AND b
(b OR c) AND a = b AND a OR c AND a
*/

/*
a OR b
a OR c
b OR c

SELECT x FROM (SELECT x FROM a UNION SELECT x FROM b) x
SELECT x FROM (SELECT x FROM a UNION SELECT x FROM c) x
SELECT x FROM (SELECT x FROM b UNION SELECT x FROM c) x
*/

/*
a AND b
a AND c
b AND c

SELECT x FROM (SELECT x FROM a INTERSECT SELECT x FROM b) x
SELECT x FROM (SELECT x FROM a INTERSECT SELECT x FROM c) x
SELECT x FROM (SELECT x FROM b INTERSECT SELECT x FROM c) x
*/

/*
(a OR b) AND c = a AND c OR b AND c

SELECT x FROM (
    SELECT x FROM (SELECT x FROM a UNION SELECT x FROM b) x
    INTERSECT
    SELECT x FROM c
) x ORDER BY x

SELECT x FROM (
    SELECT x FROM (SELECT x FROM a INTERSECT SELECT x FROM c) x
    UNION
    SELECT x FROM (SELECT x FROM b INTERSECT SELECT x FROM c) x
) x ORDER BY x
*/

/*
(a OR c) AND b = a AND b OR c AND b

SELECT x FROM (
    SELECT x FROM (SELECT x FROM a UNION SELECT x FROM c) x
    INTERSECT
    SELECT x FROM b
) x ORDER BY x

SELECT x FROM (
    SELECT x FROM (SELECT x FROM a INTERSECT SELECT x FROM b) x
    UNION
    SELECT x FROM (SELECT x FROM c INTERSECT SELECT x FROM b) x
) x ORDER BY x
*/

/*
(b OR c) AND a = b AND a OR c AND a

SELECT x FROM (
    SELECT x FROM (SELECT x FROM b UNION SELECT x FROM c) x
    INTERSECT
    SELECT x FROM a
) x ORDER BY x

SELECT x FROM (
    SELECT x FROM (SELECT x FROM b INTERSECT SELECT x FROM a) x
    UNION
    SELECT x FROM (SELECT x FROM c INTERSECT SELECT x FROM a) x
) x ORDER BY x
*/



\$result = mysql_query ("SELECT x FROM (SELECT x FROM a UNION SELECT x FROM b) x", \$handle);
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br><br>nn";
\$result = mysql_query ("SELECT x FROM (SELECT x FROM a UNION SELECT x FROM c) x", \$handle);
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br><br>nn";
\$result = mysql_query ("SELECT x FROM (SELECT x FROM b UNION SELECT x FROM c) x", \$handle);
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br><br>nn";
\$result = mysql_query ("SELECT x FROM (SELECT x FROM a INTERSECT SELECT x FROM b) x", \$handle);
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br><br>nn";
\$result = mysql_query ("SELECT x FROM (SELECT x FROM a INTERSECT SELECT x FROM c) x", \$handle);
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br><br>nn";
\$result = mysql_query ("SELECT x FROM (SELECT x FROM b INTERSECT SELECT x FROM c) x", \$handle);
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br><br>nn";
\$result = mysql_query ("SELECT x FROM (SELECT x FROM (SELECT x FROM a UNION SELECT x FROM b) x INTERSECT SELECT x FROM c) x ORDER BY x", \$handle);
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br><br>nn";
\$result = mysql_query ("SELECT x FROM (SELECT x FROM (SELECT x FROM a INTERSECT SELECT x FROM c) x UNION SELECT x FROM (SELECT x FROM b INTERSECT SELECT x FROM c) x) x ORDER BY x", \$handle);
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br><br>nn";
\$result = mysql_query ("SELECT x FROM (SELECT x FROM (SELECT x FROM a UNION SELECT x FROM c) x INTERSECT SELECT x FROM b) x ORDER BY x", \$handle);
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br><br>nn";

\$result = mysql_query ("SELECT x FROM (SELECT x FROM (SELECT x FROM a INTERSECT SELECT x FROM b) x UNION SELECT x FROM (SELECT x FROM c INTERSECT SELECT x FROM b) x) x ORDER BY x", \$handle);
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br><br>nn";

\$result = mysql_query ("SELECT x FROM (SELECT x FROM (SELECT x FROM b UNION SELECT x FROM c) x INTERSECT SELECT x FROM a) x ORDER BY x", \$handle);
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br><br>nn";

\$result = mysql_query ("SELECT x FROM (SELECT x FROM (SELECT x FROM b INTERSECT SELECT x FROM a) x UNION SELECT x FROM (SELECT x FROM c INTERSECT SELECT x FROM a) x) x ORDER BY x", \$handle);
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br><br>nn";

mysql_close (\$handle);
?>
045/quantitysql.php
<?php
include ('/home/david/mysqldata.php');

\$handle = mysql_connect ("localhost", \$MYSQL_NAME, \$MYSQL_PASSWORD);

mysql_select_db ("test046", \$handle);

mysql_query ("INSERT INTO def (name3, name4) VALUES ("002", "002")", \$handle);

\$result = mysql_query ("SELECT * FROM abc INNER JOIN def ON abc.name1 = def.name3", \$handle);

while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["name1"] . " " . \$row ["name2"] . " " . \$row ["name3"] . " " . \$row ["name4"] . "<br>n";

\$result = mysql_query ("SELECT * FROM abc LEFT JOIN def ON abc.name2 = def.name4", \$handle);

while (\$row = mysql_fetch_row (\$result))
    echo \$row [0] . " " . \$row [1] . " " . \$row [2] . " " . \$row [3] . "<br>n";

mysql_close (\$handle);
?>
046/database.php
<?php
session_start ();
?>

<form action="./form1.php" method="GET">
<input type="text" name="text1"></input>
<input type="submit"></input>
</form>

<?php
echo session_id () . "<br>n";

setcookie ("Cookie46", "THIS_IS_COOKIE_46", \$handle);

echo \$_COOKIE ["Cookie46"] . "<br>n";
echo \$_COOKIE ["Cookie46a"] . "<br>n";
echo \$_GET ["text1"] . "<br>n";
?>
046/form1.php
GET /046/form1.php?text1=DIES_IST_TEXT_46 HTTP/1.1
host: localhost
Cookie: Cookie46a=DIES_IST_COOKIE_46a
046/httprequest01.txt
david@intel-compute-stick:/var/www/html/046\$ mysql -u root -p
Enter password:
Welcome to the MariaDB monitor.  Commands end with ; or g.
Your MariaDB connection id is 2543
Server version: 10.5.12-MariaDB-0+deb11u1 Debian 11

Copyright (c) 2000, 2018, Oracle, MariaDB Corporation Ab and others.

Type 'help;' or 'h' for help. Type 'c' to clear the current input statement.

MariaDB [(none)]> CREATE DATABASE test046;
Query OK, 1 row affected (0.023 sec)

MariaDB [(none)]> USE test046;
Database changed
MariaDB [test046]> CREATE TABLE abc (name1 VARCHAR (32), name2 VARCHAR (32));
Query OK, 0 rows affected (0.092 sec)

MariaDB [test046]> CREATE TABLE def (name3 VARCHAR (32), name4 VARCHAR (32));
Query OK, 0 rows affected (0.049 sec)

MariaDB [test046]> INSERT INTO abc VALUES ("001", "001");
Query OK, 1 row affected (0.038 sec)

MariaDB [test046]> quit
Bye
david@intel-compute-stick:/var/www/html/046\$ mysql -u root -p
Enter password:
Welcome to the MariaDB monitor.  Commands end with ; or g.
Your MariaDB connection id is 2617
Server version: 10.5.12-MariaDB-0+deb11u1 Debian 11

Copyright (c) 2000, 2018, Oracle, MariaDB Corporation Ab and others.

Type 'help;' or 'h' for help. Type 'c' to clear the current input statement.

MariaDB [(none)]> CREATE DATABASE test046;
ERROR 1007 (HY000): Can't create database 'test046'; database exists
MariaDB [(none)]> INSERT INTO abc VALUES ("001", "002");
ERROR 1046 (3D000): No database selected
MariaDB [(none)]> use test046
Reading table information for completion of table and column names
You can turn off this feature to get a quicker startup with -A

Database changed
MariaDB [test046]> INSERT INTO abc VALUES ("001", "002");
Query OK, 1 row affected (0.043 sec)

MariaDB [test046]> INSERT INTO abc (name1, name2) VALUES ("002", "001");
Query OK, 1 row affected (0.026 sec)

MariaDB [test046]> INSERT INTO abc (name2, name1) VALUES ("002", "002");
Query OK, 1 row affected (0.025 sec)

MariaDB [test046]> INSERT INTO def (name3, name4) VALUES ("001", "001");
Query OK, 1 row affected (0.040 sec)

MariaDB [test046]> INSERT INTO def (name3, name4) VALUES ("001", "002");
Query OK, 1 row affected (0.031 sec)

MariaDB [test046]> INSERT INTO def (name3, name4) VALUES ("abc", "abc");
Query OK, 1 row affected (0.029 sec)

MariaDB [test046]> SELECT * FROM abc;
+-------+-------+
| name1 | name2 |
+-------+-------+
| 001   | 001   |
| 001   | 002   |
| 002   | 001   |
| 002   | 002   |
+-------+-------+
4 rows in set (0.001 sec)

MariaDB [test046]> SELECT * FROM abc JOIN def;
+-------+-------+-------+-------+
| name1 | name2 | name3 | name4 |
+-------+-------+-------+-------+
| 001   | 001   | 001   | 001   |
| 001   | 001   | 001   | 002   |
| 001   | 001   | abc   | abc   |
| 001   | 002   | 001   | 001   |
| 001   | 002   | 001   | 002   |
| 001   | 002   | abc   | abc   |
| 002   | 001   | 001   | 001   |
| 002   | 001   | 001   | 002   |
| 002   | 001   | abc   | abc   |
| 002   | 002   | 001   | 001   |
| 002   | 002   | 001   | 002   |
| 002   | 002   | abc   | abc   |
+-------+-------+-------+-------+
12 rows in set (0.002 sec)

MariaDB [test046]> SELECT * FROM abc INNER JOIN def ON abc.name1 = def.name3;
+-------+-------+-------+-------+
| name1 | name2 | name3 | name4 |
+-------+-------+-------+-------+
| 001   | 001   | 001   | 001   |
| 001   | 001   | 001   | 002   |
| 001   | 002   | 001   | 001   |
| 001   | 002   | 001   | 002   |
+-------+-------+-------+-------+
4 rows in set (0.030 sec)

MariaDB [test046]> SELECT * FROM abc LEFT JOIN def ON abc.name1 = def.name3;
+-------+-------+-------+-------+
| name1 | name2 | name3 | name4 |
+-------+-------+-------+-------+
| 001   | 001   | 001   | 001   |
| 001   | 002   | 001   | 001   |
| 001   | 001   | 001   | 002   |
| 001   | 002   | 001   | 002   |
| 002   | 001   | NULL  | NULL  |
| 002   | 002   | NULL  | NULL  |
+-------+-------+-------+-------+
6 rows in set (0.002 sec)

MariaDB [test046]> SELECT * FROM abc RIGHT JOIN def ON abc.name1 = def.name3;
+-------+-------+-------+-------+
| name1 | name2 | name3 | name4 |
+-------+-------+-------+-------+
| 001   | 001   | 001   | 001   |
| 001   | 001   | 001   | 002   |
| 001   | 002   | 001   | 001   |
| 001   | 002   | 001   | 002   |
| NULL  | NULL  | abc   | abc   |
+-------+-------+-------+-------+
5 rows in set (0.002 sec)

MariaDB [test046]> QUIT
Bye
david@intel-compute-stick:/var/www/html/046\$

046/output01.txt
001 001 001 001<br>
001 002 001 001<br>
001 001 001 002<br>
001 002 001 002<br>
002 001 002 002<br>
002 002 002 002<br>
001 001 001 001<br>
002 001 001 001<br>
001 002 001 002<br>
002 002 001 002<br>
001 002 002 002<br>
002 002 002 002<br>
046/output02.txt
david@intel-compute-stick:/var/www/html/046\$ telnet localhost 80
Trying ::1...
Connected to localhost.
Escape character is '\^]'.
GET /046/form1.php?text1=DIES_IST_TEXT_46 HTTP/1.1
host: localhost
Cookie: Cookie46a=DIES_IST_COOKIE_46a

HTTP/1.1 200 OK
Date: Tue, 17 May 2022 14:18:33 GMT
Server: Apache/2.4.52 (Debian)
Set-Cookie: PHPSESSID=utkup9btbtliuk35uu9rcl9f46; path=/
Expires: Thu, 19 Nov 1981 08:52:00 GMT
Cache-Control: no-store, no-cache, must-revalidate, post-check=0, pre-check=0
Pragma: no-cache
Set-Cookie: Cookie46=THIS_IS_COOKIE_46
Vary: Accept-Encoding
Content-Length: 203
Content-Type: text/html; charset=UTF-8


<form action="./form1.php" method="GET">
<input type="text" name="text1"></input>
<input type="submit"></input>
</form>

utkup9btbtliuk35uu9rcl9f46<br>
<br>
DIES_IST_COOKIE_46a<br>
DIES_IST_TEXT_46<br>

Connection closed by foreign host.
david@intel-compute-stick:/var/www/html/046\$

046/output03.txt
0<br>
9<br>
50<br>
45<br>
32<br>
37<br>
2<br>
55<br>
20<br>
33<br>
49<br>
29<br>
12<br>
61<br>
16<br>
24<br>
10<br>
3<br>
7<br>
43<br>
51<br>
28<br>
34<br>
63<br>
38<br>
39<br>
48<br>
21<br>
15<br>
36<br>
<br>

0<br>
9<br>
50<br>
45<br>
32<br>
37<br>
2<br>
55<br>
20<br>
33<br>
49<br>
29<br>
12<br>
61<br>
16<br>
24<br>
10<br>
44<br>
48<br>
19<br>
7<br>
63<br>
35<br>
38<br>
36<br>
52<br>
31<br>
5<br>
<br>

3<br>
7<br>
43<br>
12<br>
51<br>
28<br>
9<br>
34<br>
63<br>
38<br>
39<br>
48<br>
16<br>
21<br>
24<br>
15<br>
36<br>
44<br>
37<br>
10<br>
19<br>
50<br>
35<br>
45<br>
52<br>
61<br>
32<br>
31<br>
5<br>
<br>

9<br>
12<br>
16<br>
24<br>
<br>

50<br>
45<br>
32<br>
37<br>
61<br>
16<br>
24<br>
10<br>
<br>

7<br>
63<br>
38<br>
48<br>
16<br>
24<br>
36<br>
<br>

7<br>
10<br>
16<br>
24<br>
32<br>
36<br>
37<br>
38<br>
45<br>
48<br>
50<br>
61<br>
63<br>
<br>

7<br>
10<br>
16<br>
24<br>
32<br>
36<br>
37<br>
38<br>
45<br>
48<br>
50<br>
61<br>
63<br>
<br>

7<br>
9<br>
12<br>
16<br>
24<br>
36<br>
38<br>
48<br>
63<br>
<br>

7<br>
9<br>
12<br>
16<br>
24<br>
36<br>
38<br>
48<br>
63<br>
<br>

9<br>
10<br>
12<br>
16<br>
24<br>
32<br>
37<br>
45<br>
50<br>
61<br>
<br>

7<br>
10<br>
16<br>
24<br>
32<br>
36<br>
37<br>
38<br>
45<br>
48<br>
50<br>
61<br>
63<br>
<br>

046/output04.txt
<?php
include ('/home/david/mysqldata.php');

\$handle = mysql_connect ("localhost", \$MYSQL_NAME, \$MYSQL_PASSWORD);

mysql_query ("CREATE DATABASE quantity047", \$handle);

mysql_select_db ("quantity047", \$handle);

mysql_query ("CREATE TABLE a (x INTEGER)", \$handle);
mysql_query ("CREATE TABLE b (x INTEGER)", \$handle);
mysql_query ("CREATE TABLE c (x INTEGER)", \$handle);

for (\$i = 0;   \$i < 20;  \$i++) {
    mysql_query ("INSERT INTO a VALUES ("" . rand () % 64 . "")", \$handle);
    mysql_query ("INSERT INTO b VALUES ("" . rand () % 64 . "")", \$handle);
    mysql_query ("INSERT INTO c VALUES ("" . rand () % 64 . "")", \$handle);
}

/*
a OR b
a OR c
b OR c

a AND b
a AND c
b AND c

(a OR b) AND c = a AND c OR b AND c
(a OR c) AND b = a AND b OR c AND b
(b OR c) AND a = b AND c OR c AND a
*/

/*
a OR b
a OR c
b OR c

SELECT x FROM (SELECT x FROM a UNION SELECT x FROM b) x
SELECT x FROM (SELECT x FROM a UNION SELECT x FROM c) x
SELECT x FROM (SELECT x FROM b UNION SELECT x FROM c) x
*/

/*
a AND b
a AND c
b AND c

SELECT x FROM (SELECT x FROM a INTERSECT SELECT x FROM b) x
SELECT x FROM (SELECT x FROM a INTERSECT SELECT x FROM c) x
SELECT x FROM (SELECT x FROM b INTERSECT SELECT x FROM c) x
*/

/*
(a OR b) AND c = a AND c OR b AND c

SELECT x FROM (
    SELECT x FROM (SELECT x FROM a UNION SELECT x FROM b) x
    INTERSECT
    SELECT x FROM c
) x ORDER BY x

SELECT x FROM (
    SELECT x FROM (SELECT x FROM a INTERSECT SELECT x FROM c) x
    UNION
    SELECT x FROM (SELECT x FROM b INTERSECT SELECT x FROM c) x
) x ORDER BY x
*/

/*
(a OR c) AND b = a AND b OR c AND b

SELECT x FROM (
    SELECT x FROM (SELECT x FROM a UNION SELECT x FROM c) x
    INTERSECT
    SELECT x FROM b
) x ORDER BY x

SELECT x FROM (
    SELECT x FROM (SELECT x FROM a INTERSECT SELECT x FROM b) x
    UNION
    SELECT x FROM (SELECT x FROM c INTERSECT SELECT x FROM b) x
) x ORDER BY x
*/

/*
(b OR c) AND a = b AND c OR c AND a

SELECT x FROM (
    SELECT x FROM (SELECT x FROM b UNION SELECT x FROM c) x
    INTERSECT
    SELECT x FROM a
) x ORDER BY x

SELECT x FROM (
    SELECT x FROM (SELECT x FROM b INTERSECT SELECT x FROM c) x
    UNION
    SELECT x FROM (SELECT x FROM c INTERSECT SELECT x FROM a) x
) x ORDER BY x
*/


\$result = mysql_query ("SELECT x FROM (SELECT x FROM a UNION SELECT x FROM b) x", \$handle);
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br>nn";

\$result = mysql_query ("SELECT x FROM (SELECT x FROM a UNION SELECT x FROM c) x", \$handle);
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br>nn";

\$result = mysql_query ("SELECT x FROM (SELECT x FROM b UNION SELECT x FROM c) x", \$handle);
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br>nn";

\$result = mysql_query ("SELECT x FROM (SELECT x FROM a INTERSECT SELECT x FROM b) x", \$handle);
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br>nn";

\$result = mysql_query ("SELECT x FROM (SELECT x FROM a INTERSECT SELECT x FROM c) x", \$handle);
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br>nn";

\$result = mysql_query ("SELECT x FROM (SELECT x FROM b INTERSECT SELECT x FROM c) x", \$handle);
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br>nn";

\$result = mysql_query ("SELECT x FROM (SELECT x FROM (SELECT x FROM a UNION SELECT x FROM b) x INTERSECT SELECT x FROM c) x ORDER BY x", \$handle);
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br>nn";

\$result = mysql_query ("SELECT x FROM (SELECT x FROM (SELECT x FROM a INTERSECT SELECT x FROM c) x UNION SELECT x FROM (SELECT x FROM b INTERSECT SELECT x FROM c) x) x ORDER BY x", \$handle);
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br>nn";

\$result = mysql_query ("SELECT x FROM (SELECT x FROM (SELECT x FROM a UNION SELECT x FROM c) x INTERSECT SELECT x FROM b) x ORDER BY x", \$handle);
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br>nn";

\$result = mysql_query ("SELECT x FROM (SELECT x FROM (SELECT x FROM a INTERSECT SELECT x FROM b) x UNION SELECT x FROM (SELECT x FROM c INTERSECT SELECT x FROM b) x) x ORDER BY x", \$handle);
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br>nn";
\$result = mysql_query ("SELECT x FROM (SELECT x FROM (SELECT x FROM b UNION SELECT x FROM c) x INTERSECT SELECT x FROM a) x ORDER BY x", \$handle);
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br>nn";

\$result = mysql_query ("SELECT x FROM (SELECT x FROM (SELECT x FROM b INTERSECT SELECT x FROM c) x UNION SELECT x FROM (SELECT x FROM c INTERSECT SELECT x FROM a) x) x ORDER BY x", \$handle);
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br>nn";


?>
046/quantity.php
<?php
include ('/home/david/mysqldata.php');

\$handle = mysql_connect ("localhost", \$MYSQL_NAME, \$MYSQL_PASSWORD);

mysql_select_db ("test047", \$handle);

mysql_query ("INSERT INTO def VALUES ("def", "def")", \$handle);

\$result = mysql_query ("SELECT * FROM abc INNER JOIN def ON abc.name1 = def.ijh", \$handle);
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["name1"] . " " . \$row ["name2"] . " " . \$row ["ijh"] . " " . \$row ["xyz"] . "<br>n";

\$result = mysql_query ("SELECT * FROM abc LEFT JOIN def ON abc.name2 = def.xyz", \$handle);
while (\$row = mysql_fetch_row (\$result))
    echo \$row [0] . " " . \$row [1] . " " . \$row [2] . " " . \$row [3] . "<br>n";

mysql_close (\$handle);
?>
047/database.php
<?php
session_start ();
?>

<form method="POST" action="./form1.php">
<input type="text" name="text1"></input>
<input type="submit"></input>
</form>

<?php
setcookie ("Cookie47", "DIES_IST_COOKIE_47", time () + 3600);
echo session_id () . "<br>n";
echo \$_POST ["text1"]. "<br>n";
echo \$_COOKIE ["Cookie47"] . "<br>n";
echo \$_COOKIE ["Cookie47a"] . "<br>n";
?>
047/form1.php
POST /047/form1.php HTTP/1.1
host: localhost
Cookie: Cookie47a=HALLO_DIES_IST_COOKIE47a
Content-Type: application/x-www-form-urlencoded
Content-Length: 27

text1=HALLO_DIES_IST_TEXT47
047/httprequest01.txt
david@intel-compute-stick:/var/www/html/047\$ mysql -u root -p
Enter password:
Welcome to the MariaDB monitor.  Commands end with ; or g.
Your MariaDB connection id is 2661
Server version: 10.5.12-MariaDB-0+deb11u1 Debian 11

Copyright (c) 2000, 2018, Oracle, MariaDB Corporation Ab and others.

Type 'help;' or 'h' for help. Type 'c' to clear the current input statement.

MariaDB [(none)]> CREATE DATABASE test047;
Query OK, 1 row affected (0.029 sec)

MariaDB [(none)]> USE test047;
Database changed
MariaDB [test047]> CREATE TABLE abc (name1 VARCHAR (32), name2 VARCHAR (32));
Query OK, 0 rows affected (0.082 sec)

MariaDB [test047]> CREATE TABLE def (ijh VARCHAR (32), xyz VARCHAR (32));
Query OK, 0 rows affected (0.056 sec)

MariaDB [test047]> INSERT INTO abc VALUES ("001", "001");
Query OK, 1 row affected (0.033 sec)

MariaDB [test047]> INSERT INTO abc VALUES ("001", "002");
Query OK, 1 row affected (0.027 sec)

MariaDB [test047]> INSERT INTO abc VALUES ("002", "001");
Query OK, 1 row affected (0.027 sec)

MariaDB [test047]> INSERT INTO abc VALUES ("002", "002");
Query OK, 1 row affected (0.031 sec)

MariaDB [test047]> INSERT INTO def VALUES ("001", "001");
Query OK, 1 row affected (0.030 sec)

MariaDB [test047]> INSERT INTO def VALUES ("001", "002");
Query OK, 1 row affected (0.032 sec)

MariaDB [test047]> INSERT INTO def VALUES ("abc", "abc");
Query OK, 1 row affected (0.026 sec)

MariaDB [test047]> SELECT * FROM abc;
+-------+-------+
| name1 | name2 |
+-------+-------+
| 001   | 001   |
| 001   | 002   |
| 002   | 001   |
| 002   | 002   |
+-------+-------+
4 rows in set (0.001 sec)

MariaDB [test047]> SELECT * FROM abc JOIN def;
+-------+-------+------+------+
| name1 | name2 | ijh  | xyz  |
+-------+-------+------+------+
| 001   | 001   | 001  | 001  |
| 001   | 001   | 001  | 002  |
| 001   | 001   | abc  | abc  |
| 001   | 002   | 001  | 001  |
| 001   | 002   | 001  | 002  |
| 001   | 002   | abc  | abc  |
| 002   | 001   | 001  | 001  |
| 002   | 001   | 001  | 002  |
| 002   | 001   | abc  | abc  |
| 002   | 002   | 001  | 001  |
| 002   | 002   | 001  | 002  |
| 002   | 002   | abc  | abc  |
+-------+-------+------+------+
12 rows in set (0.002 sec)

MariaDB [test047]> SELECT * FROM abc INNER JOIN def ON abc.name1 = def.ijh;
+-------+-------+------+------+
| name1 | name2 | ijh  | xyz  |
+-------+-------+------+------+
| 001   | 001   | 001  | 001  |
| 001   | 001   | 001  | 002  |
| 001   | 002   | 001  | 001  |
| 001   | 002   | 001  | 002  |
+-------+-------+------+------+
4 rows in set (0.002 sec)

MariaDB [test047]> SELECT * FROM abc RIGHT JOIN def ON abc.name2 = def.xyz;
+-------+-------+------+------+
| name1 | name2 | ijh  | xyz  |
+-------+-------+------+------+
| 001   | 001   | 001  | 001  |
| 001   | 002   | 001  | 002  |
| 002   | 001   | 001  | 001  |
| 002   | 002   | 001  | 002  |
| NULL  | NULL  | abc  | abc  |
+-------+-------+------+------+
5 rows in set (0.002 sec)

MariaDB [test047]> SELECT * FROM abc LEFT JOIN def ON abc.name1 = def.ijh;
+-------+-------+------+------+
| name1 | name2 | ijh  | xyz  |
+-------+-------+------+------+
| 001   | 001   | 001  | 001  |
| 001   | 002   | 001  | 001  |
| 001   | 001   | 001  | 002  |
| 001   | 002   | 001  | 002  |
| 002   | 001   | NULL | NULL |
| 002   | 002   | NULL | NULL |
+-------+-------+------+------+
6 rows in set (0.002 sec)

MariaDB [test047]> quit
Bye
david@intel-compute-stick:/var/www/html/047\$

047/output01.txt
001 001 001 001<br>
001 002 001 001<br>
001 001 001 002<br>
001 002 001 002<br>
001 001 001 001<br>
002 001 001 001<br>
001 002 001 002<br>
002 002 001 002<br>
047/output02.txt
david@intel-compute-stick:/var/www/html/047\$ telnet localhost 80
Trying ::1...
Connected to localhost.
Escape character is '\^]'.
POST /047/form1.php HTTP/1.1
host: localhost
Cookie: Cookie47a=HALLO_DIES_IST_COOKIE47a
Content-Type: application/x-www-form-urlencoded
Content-Length: 27

text1=HALLO_DIES_IST_TEXT47
HTTP/1.1 200 OK
Date: Wed, 18 May 2022 11:14:24 GMT
Server: Apache/2.4.52 (Debian)
Set-Cookie: PHPSESSID=mu1os0avk89ctj378p55iluov3; path=/
Expires: Thu, 19 Nov 1981 08:52:00 GMT
Cache-Control: no-store, no-cache, must-revalidate, post-check=0, pre-check=0
Pragma: no-cache
Set-Cookie: Cookie47=DIES_IST_COOKIE_47; expires=Wed, 18-May-2022 12:14:25 GMT; Max-Age=3600
Vary: Accept-Encoding
Content-Length: 214
Content-Type: text/html; charset=UTF-8


<form method="POST" action="./form1.php">
<input type="text" name="text1"></input>
<input type="submit"></input>
</form>

mu1os0avk89ctj378p55iluov3<br>
HALLO_DIES_IST_TEXT47<br>
<br>
HALLO_DIES_IST_COOKIE47a<br>

Connection closed by foreign host.
david@intel-compute-stick:/var/www/html/047\$

047/output03.txt
0<br>
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047/output04.txt
<?php
include ('/home/david/mysqldata.php');

\$handle = mysql_connect ("localhost", \$MYSQL_NAME, \$MYSQL_PASSWORD);

mysql_query ("CREATE DATABASE quantity047", \$handle);

mysql_select_db ("quantity047", \$handle);

mysql_query ("CREATE TABLE a (x VARCHAR (4))", \$handle);
mysql_query ("CREATE TABLE b (x VARCHAR (4))", \$handle);
mysql_query ("CREATE TABLE c (x VARCHAR (4))", \$handle);

for (\$i = 0;  \$i < 20;  \$i++) {
    mysql_query ("INSERT INTO a VALUES ("" . rand () % 64 . "")", \$handle);
    mysql_query ("INSERT INTO b VALUES ("" . rand () % 64 . "")", \$handle);
    mysql_query ("INSERT INTO c VALUES ("" . rand () % 64 . "")", \$handle);
}

/*
a OR b
a OR c
b OR c

a AND b
a AND c
b AND c

(a OR b) AND c = a AND c OR b AND c
(a OR c) AND b = a AND b OR c AND b
(b OR c) AND a = b AND a OR c AND a
*/

/*
a OR b
a OR c
b OR c

SELECT x FROM (SELECT x FROM a UNION SELECT x FROM b) x
SELECT x FROM (SELECT x FROM a UNION SELECT x FROM c) x
SELECT x FROM (SELECT x FROM b UNION SELECT x FROM c) x
*/

/*
a AND b
a AND c
b AND c

SELECT x FROM (SELECT x FROM a INTERSECT SELECT x FROM b) x
SELECT x FROM (SELECT x FROM a INTERSECT SELECT x FROM c) x
SELECT x FROM (SELECT x FROM b INTERSECT SELECT x FROM c) x
*/

/*
(a OR b) AND c = a AND c OR b AND c

SELECT x FROM (
    SELECT x FROM (SELECT x FROM a UNION SELECT x FROM b) x
    INTERSECT
    SELECT x FROM c
) x ORDER BY x

SELECT x FROM (
    SELECT x FROM (SELECT x FROM a INTERSECT SELECT x FROM c ) x
    UNION
    SELECT x FROM (SELECT x FROM b INTERSECT SELECT x FROM c) x
) x ORDER BY x
*/

/*
(a OR c) AND b = a AND b OR c AND b

SELECT x FROM (
    SELECT x FROM (SELECT x FROM a UNION SELECT x FROM c) x
    INTERSECT
    SELECT x FROM b
) x ORDER BY x

SELECT x FROM (
    SELECT x FROM (SELECT x FROM a  INTERSECT SELECT x FROM b) x
    UNION
    SELECT x FROM (SELECT x FROM c INTERSECT SELECT x FROM b) x
) x ORDER BY x
*/

/*
(b OR c) AND a = b AND a OR c AND a

SELECT x FROM (
    SELECT x FROM (SELECT x FROM b UNION SELECT x FROM c) x
    INTERSECT
    SELECT x FROM a
) x ORDER BY x

SELECT x FROM (
    SELECT x FROM (SELECT x FROM b INTERSECT SELECT x FROM a) x
    UNION
    SELECT x FROM (SELECT x FROM c INTERSECT SELECT x FROM a) x
) x ORDER BY x
*/


\$result = mysql_query ("SELECT x FROM (SELECT x FROM a UNION SELECT x FROM b) x", \$handle);
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br><br>nn";
\$result = mysql_query ("SELECT x FROM (SELECT x FROM a UNION SELECT x FROM c) x", \$handle);
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br><br>nn";
\$result = mysql_query ("SELECT x FROM (SELECT x FROM b UNION SELECT x FROM c) x", \$handle);
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br><br>nn";
\$result = mysql_query ("SELECT x FROM (SELECT x FROM a INTERSECT SELECT x FROM b) x", \$handle);
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br><br>nn";
\$result = mysql_query ("SELECT x FROM (SELECT x FROM a INTERSECT SELECT x FROM c) x", \$handle);
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br><br>nn";
\$result = mysql_query ("SELECT x FROM (SELECT x FROM b INTERSECT SELECT x FROM c) x", \$handle);
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br><br>nn";
\$result = mysql_query ("SELECT x FROM (
    SELECT x FROM (SELECT x FROM a UNION SELECT x FROM b) x
    INTERSECT
    SELECT x FROM c
) x ORDER BY x", \$handle);
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br><br>nn";
\$result = mysql_query ("SELECT x FROM (
    SELECT x FROM (SELECT x FROM a INTERSECT SELECT x FROM c ) x
    UNION
    SELECT x FROM (SELECT x FROM b INTERSECT SELECT x FROM c) x
) x ORDER BY x", \$handle);
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br><br>nn";
\$result = mysql_query ("SELECT x FROM (
    SELECT x FROM (SELECT x FROM a UNION SELECT x FROM c) x
    INTERSECT
    SELECT x FROM b
) x ORDER BY x", \$handle);
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br><br>nn";
\$result = mysql_query ("SELECT x FROM (
    SELECT x FROM (SELECT x FROM a  INTERSECT SELECT x FROM b) x
    UNION
    SELECT x FROM (SELECT x FROM c INTERSECT SELECT x FROM b) x
) x ORDER BY x", \$handle);
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br><br>nn";
\$result = mysql_query ("SELECT x FROM (
    SELECT x FROM (SELECT x FROM b UNION SELECT x FROM c) x
    INTERSECT
    SELECT x FROM a
) x ORDER BY x", \$handle);
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br><br>nn";
\$result = mysql_query ("SELECT x FROM (
    SELECT x FROM (SELECT x FROM b INTERSECT SELECT x FROM a) x
    UNION
    SELECT x FROM (SELECT x FROM c INTERSECT SELECT x FROM a) x
) x ORDER BY x", \$handle);
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br><br>nn";


?>
047/quantity.php
<?php
include ('/home/david/mysqldata.php');

\$handle = mysql_connect ("localhost", \$MYSQL_NAME, \$MYSQL_PASSWORD);

mysql_select_db ("test048", \$handle);

mysql_query ("INSERT INTO def VALUES ("002", "002")", \$handle);

\$result = mysql_query ("SELECT * FROM abc INNER JOIN def ON abc.abc = def.ijk", \$handle);
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["abc"] . " " . \$row ["def"] . " " . \$row ["ijk"] . " " . \$row ["xyz"] . "<br>n";

\$result = mysql_query ("SELECT * FROM abc LEFT JOIN def ON abc.def = def.xyz", \$handle);
while (\$row = mysql_fetch_row (\$result))
    echo \$row [0] . " " . \$row [1] . " " . \$row [2] . " " . \$row [3] . "<br>n";

mysql_close (\$handle);
?>
048/database.php
<?php
session_start ();
?>

<form method="POST" action="./form1.php">
<input type="password" name="password1"></input>
<input type="submit"></input>
</form>

<?php
echo htmlentities (\$_POST ["password1"]) . "<br>n";

echo session_id () . "<br>n";

echo htmlentities (\$_COOKIE ["Cookie48a"]) . "<br>n";

setcookie ("Cookie48", "THIS_IS_COOKIE_48", time () + 3600);

echo htmlentities (\$_COOKIE ["Cookie48"]) . "<br>n";
?>

048/form1.php
POST /048/form1.php HTTP/1.1
host: localhost
Cookie: Cookie48a=DIES_IST_COOKIE_48a
Content-Length: 36
Content-Type: application/x-www-form-urlencoded

password1=HALLO_DIES_IST_PASSWORT_48
048/httprequest01.txt
david@intel-compute-stick:~\$ mysql -u root -p
Enter password:
Welcome to the MariaDB monitor.  Commands end with ; or g.
Your MariaDB connection id is 2772
Server version: 10.5.12-MariaDB-0+deb11u1 Debian 11

Copyright (c) 2000, 2018, Oracle, MariaDB Corporation Ab and others.

Type 'help;' or 'h' for help. Type 'c' to clear the current input statement.

MariaDB [(none)]> CREATE DATABASE test048;
Query OK, 1 row affected (0.035 sec)

MariaDB [(none)]> USE test048;
Database changed
MariaDB [test048]> CREATE TABLE abc (abc VARCHAR (32), def VARCHAR (32));
Query OK, 0 rows affected (0.092 sec)

MariaDB [test048]> CREATE TABLE def (ijk VARCHAR (32), xyz VARCHAR (32));
Query OK, 0 rows affected (0.064 sec)

MariaDB [test048]> INSERT INTO abc VALUES ("001", "001");
Query OK, 1 row affected (0.041 sec)

MariaDB [test048]> INSERT INTO abc (abc, def) VALUES ("001", "002");
Query OK, 1 row affected (0.035 sec)

MariaDB [test048]> INSERT INTO abc (def, abc) VALUES ("001", "002");
Query OK, 1 row affected (0.026 sec)

MariaDB [test048]> INSERT INTO abc VALUES ("002", "002");
Query OK, 1 row affected (0.028 sec)

MariaDB [test048]> INSERT INTO def VALUES ("001", "001");
Query OK, 1 row affected (0.028 sec)

MariaDB [test048]> INSERT INTO def VALUES ("001", "002");
Query OK, 1 row affected (0.032 sec)

MariaDB [test048]> INSERT INTO def VALUES ("abc", "abc");
Query OK, 1 row affected (0.028 sec)

MariaDB [test048]> SELECT * FROM abc;
+------+------+
| abc  | def  |
+------+------+
| 001  | 001  |
| 001  | 002  |
| 002  | 001  |
| 002  | 002  |
+------+------+
4 rows in set (0.001 sec)

MariaDB [test048]> SELECT * FROM def;
+------+------+
| ijk  | xyz  |
+------+------+
| 001  | 001  |
| 001  | 002  |
| abc  | abc  |
+------+------+
3 rows in set (0.001 sec)

MariaDB [test048]> SELECT * FROM abc JOIN def;
+------+------+------+------+
| abc  | def  | ijk  | xyz  |
+------+------+------+------+
| 001  | 001  | 001  | 001  |
| 001  | 001  | 001  | 002  |
| 001  | 001  | abc  | abc  |
| 001  | 002  | 001  | 001  |
| 001  | 002  | 001  | 002  |
| 001  | 002  | abc  | abc  |
| 002  | 001  | 001  | 001  |
| 002  | 001  | 001  | 002  |
| 002  | 001  | abc  | abc  |
| 002  | 002  | 001  | 001  |
| 002  | 002  | 001  | 002  |
| 002  | 002  | abc  | abc  |
+------+------+------+------+
12 rows in set (0.002 sec)

MariaDB [test048]> SELECT * FROM abc INNER JOIN def ON abc.abc = def.ijk;
+------+------+------+------+
| abc  | def  | ijk  | xyz  |
+------+------+------+------+
| 001  | 001  | 001  | 001  |
| 001  | 001  | 001  | 002  |
| 001  | 002  | 001  | 001  |
| 001  | 002  | 001  | 002  |
+------+------+------+------+
4 rows in set (0.002 sec)

MariaDB [test048]> SELECT * FROM abc LEFT JOIN def ON abc.def = def.xyz;
+------+------+------+------+
| abc  | def  | ijk  | xyz  |
+------+------+------+------+
| 001  | 001  | 001  | 001  |
| 002  | 001  | 001  | 001  |
| 001  | 002  | 001  | 002  |
| 002  | 002  | 001  | 002  |
+------+------+------+------+
4 rows in set (0.002 sec)

MariaDB [test048]> SELECT * FROM abc RIGHT JOIN def ON abc.def = def.xyz;
+------+------+------+------+
| abc  | def  | ijk  | xyz  |
+------+------+------+------+
| 001  | 001  | 001  | 001  |
| 001  | 002  | 001  | 002  |
| 002  | 001  | 001  | 001  |
| 002  | 002  | 001  | 002  |
| NULL | NULL | abc  | abc  |
+------+------+------+------+
5 rows in set (0.002 sec)

MariaDB [test048]> quit
Bye
david@intel-compute-stick:~\$

048/output01.txt
001 001 001 001<br>
001 002 001 001<br>
001 001 001 002<br>
001 002 001 002<br>
002 001 002 002<br>
002 002 002 002<br>
001 001 001 001<br>
002 001 001 001<br>
001 002 001 002<br>
002 002 001 002<br>
001 002 002 002<br>
002 002 002 002<br>
048/output02.txt
david@intel-compute-stick:/var/www/html/048\$ telnet localhost 80
Trying ::1...
Connected to localhost.
Escape character is '\^]'.
POST /048/form1.php HTTP/1.1
host: localhost
Cookie: Cookie48a=DIES_IST_COOKIE_48a
Content-Length: 36
Content-Type: application/x-www-form-urlencoded

password1=HALLO_DIES_IST_PASSWORT_48
HTTP/1.1 200 OK
Date: Fri, 20 May 2022 14:12:06 GMT
Server: Apache/2.4.52 (Debian)
Set-Cookie: PHPSESSID=96mf6hpkgoi8ldqqo7i8pcg2v4; path=/
Expires: Thu, 19 Nov 1981 08:52:00 GMT
Cache-Control: no-store, no-cache, must-revalidate, post-check=0, pre-check=0
Pragma: no-cache
Set-Cookie: Cookie48=THIS_IS_COOKIE_48; expires=Fri, 20-May-2022 15:12:07 GMT; Max-Age=3600
Vary: Accept-Encoding
Content-Length: 223
Content-Type: text/html; charset=UTF-8


<form method="POST" action="./form1.php">
<input type="password" name="password1"></input>
<input type="submit"></input>
</form>

HALLO_DIES_IST_PASSWORT_48<br>
96mf6hpkgoi8ldqqo7i8pcg2v4<br>
DIES_IST_COOKIE_48a<br>
<br>


Connection closed by foreign host.
david@intel-compute-stick:/var/www/html/048\$

048/output03.txt
7<br>
18<br>
0<br>
4<br>
19<br>
5<br>
38<br>
17<br>
35<br>
1<br>
43<br>
30<br>
34<br>
31<br>
46<br>
16<br>
9<br>
47<br>
11<br>
26<br>
33<br>
2<br>
40<br>
39<br>
22<br>
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36<br>
6<br>
44<br>
8<br>
28<br>
42<br>
12<br>
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10<br>
32<br>
45<br>
37<br>
15<br>
29<br>
27<br>
41<br>
20<br>
14<br>
<br><br>

7<br>
18<br>
0<br>
4<br>
19<br>
5<br>
38<br>
17<br>
35<br>
1<br>
43<br>
30<br>
34<br>
31<br>
46<br>
16<br>
9<br>
47<br>
11<br>
26<br>
33<br>
2<br>
40<br>
39<br>
22<br>
24<br>
36<br>
6<br>
44<br>
8<br>
28<br>
42<br>
12<br>
13<br>
10<br>
32<br>
45<br>
37<br>
15<br>
29<br>
21<br>
25<br>
41<br>
<br><br>

31<br>
28<br>
7<br>
38<br>
12<br>
5<br>
33<br>
16<br>
4<br>
27<br>
45<br>
18<br>
26<br>
17<br>
34<br>
37<br>
40<br>
41<br>
30<br>
13<br>
46<br>
8<br>
11<br>
20<br>
44<br>
47<br>
35<br>
0<br>
9<br>
39<br>
14<br>
15<br>
2<br>
21<br>
6<br>
1<br>
29<br>
22<br>
25<br>
10<br>
<br><br>

7<br>
18<br>
0<br>
4<br>
5<br>
38<br>
17<br>
35<br>
30<br>
34<br>
31<br>
46<br>
16<br>
9<br>
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11<br>
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33<br>
40<br>
39<br>
44<br>
8<br>
28<br>
12<br>
13<br>
45<br>
37<br>
<br><br>

7<br>
18<br>
4<br>
5<br>
38<br>
17<br>
35<br>
1<br>
34<br>
46<br>
16<br>
47<br>
11<br>
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33<br>
2<br>
40<br>
39<br>
22<br>
6<br>
44<br>
8<br>
28<br>
12<br>
10<br>
45<br>
15<br>
29<br>
<br><br>

28<br>
7<br>
38<br>
12<br>
5<br>
33<br>
16<br>
4<br>
45<br>
18<br>
26<br>
17<br>
34<br>
40<br>
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46<br>
8<br>
11<br>
44<br>
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35<br>
39<br>
<br><br>

1<br>
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<br><br>

1<br>
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47<br>
<br><br>

0<br>
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13<br>
16<br>
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38<br>
39<br>
40<br>
41<br>
44<br>
45<br>
46<br>
47<br>
<br><br>

0<br>
4<br>
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7<br>
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37<br>
38<br>
39<br>
40<br>
41<br>
44<br>
45<br>
46<br>
47<br>
<br><br>

0<br>
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46<br>
47<br>
<br><br>

0<br>
1<br>
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4<br>
5<br>
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8<br>
9<br>
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44<br>
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46<br>
47<br>
<br><br>


048/output04.txt
<?php
include ('/home/david/mysqldata.php');

\$handle = mysql_connect ("localhost", \$MYSQL_NAME, \$MYSQL_PASSWORD);

mysql_query ("CREATE DATABASE quantity048", \$handle);

mysql_select_db ("quantity048", \$handle);

mysql_query ("CREATE TABLE a (x INTEGER)", \$handle);
mysql_query ("CREATE TABLE b (x INTEGER)", \$handle);
mysql_query ("CREATE TABLE c (x INTEGER)", \$handle);

for (\$i = 0;  \$i < 20;  \$i++) {
    mysql_query ("INSERT INTO a VALUES ("" . rand () % 48 . "")", \$handle);
    mysql_query ("INSERT INTO b VALUES ("" . rand () % 48 . "")", \$handle);
    mysql_query ("INSERT INTO c VALUES ("" . rand () % 48 . "")", \$handle);
}

/*
a OR b
a OR c
b OR c

a AND b
a AND c
b AND c

(a OR b) AND c = a AND c OR b AND c
(a OR c) AND b = a AND b OR c AND b
(b OR c) AND a = b AND a OR c AND a
*/


/*
a OR b
a OR c
b OR c
*/

\$result = mysql_query ("SELECT x FROM (SELECT x FROM a UNION SELECT x FROM b) x", \$handle);
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br><br>nn";
\$result = mysql_query ("SELECT x FROM (SELECT x FROM a UNION SELECT x FROM c) x", \$handle);
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br><br>nn";
\$result = mysql_query ("SELECT x FROM (SELECT x FROM b UNION SELECT x FROM c) x", \$handle);
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br><br>nn";

/*
a AND b
a AND c
b AND c
*/

\$result = mysql_query ("SELECT x FROM (SELECT x FROM a INTERSECT SELECT x FROM b) x", \$handle);
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br><br>nn";
\$result = mysql_query ("SELECT x FROM (SELECT x FROM a INTERSECT SELECT x FROM c) x", \$handle);
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br><br>nn";
\$result = mysql_query ("SELECT x FROM (SELECT x FROM b INTERSECT SELECT x FROM c) x", \$handle);
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br><br>nn";

/*
(a OR b) AND c = a AND c OR b AND c
*/

\$result = mysql_query ("SELECT x FROM (
    SELECT x FROM (SELECT x FROM a INTERSECT SELECT x FROM c) x
    UNION
    SELECT x FROM (SELECT x FROM b INTERSECT SELECT x FROM c) x
) x ORDER BY x", \$handle);
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br><br>nn";

\$result = mysql_query ("SELECT x FROM (
    SELECT x FROM (SELECT x FROM a UNION SELECT x FROM b) x
    INTERSECT
    SELECT x FROM c
) x ORDER BY x", \$handle);
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br><br>nn";

/*
(a OR c) AND b = a AND b OR c AND b
*/

\$result = mysql_query ("SELECT x FROM (
    SELECT x FROM (SELECT x FROM a INTERSECT SELECT x FROM b) x
    UNION
    SELECT x FROM (SELECT x FROM c INTERSECT SELECT x FROM b) x
) x ORDER BY x", \$handle);
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br><br>nn";

\$result = mysql_query ("SELECT x FROM (
    SELECT x FROM  (SELECT x FROM a UNION SELECT x FROM c) x
    INTERSECT
    SELECT x FROM b
) x ORDER BY x", \$handle);
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br><br>nn";

/*
(b OR c) AND a = b AND a OR c AND a
*/

\$result = mysql_query ("SELECT x FROM (
    SELECT x FROM (SELECT x FROM b INTERSECT SELECT x FROM a) x
    UNION
    SELECT x FROM (SELECT x FROM c INTERSECT SELECT x FROM a) x
) x ORDER BY x", \$handle);
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br><br>nn";

\$result = mysql_query ("SELECT x FROM (
    SELECT x FROM (SELECT x FROM b UNION SELECT x FROM c) x
    INTERSECT
    SELECT x FROM a
) x ORDER BY x", \$handle);
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br><br>nn";

mysql_close (\$handle);
?>

048/quantity.php
<?php
include ('/home/david/mysqldata.php');

\$handle = mysql_connect ("localhost", \$MYSQL_NAME, \$MYSQL_PASSWORD);

mysql_select_db ("test049", \$handle);

mysql_query ("INSERT INTO def VALUES ("002", "002")", \$handle);

\$result = mysql_query ("SELECT * FROM abc INNER JOIN def ON abc.name1 = def.name3", \$handle);
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["name1"] . " " . \$row ["name2"] . " " . \$row ["name3"] . " " . \$row ["name4"] . "<br>n";
\$result = mysql_query ("SELECT * FROM abc LEFT JOIN def ON abc.name2 = def.name4", \$handle);
while (\$row = mysql_fetch_row (\$result))
    echo \$row [0] . " " . \$row [1] . " " . \$row [2] . " " . \$row [3] . "<br>n";

mysql_close (\$handle);
?>
049/database.php
<?php
session_start ();
?>

<form method="POST" action="./form1.php">
<input type="text" name="text1"></input>
<input type="submit"></input>
</form>

<?php
echo session_id () . "<br>n";

setcookie ("Cookie49", "DAS_IST_COOKIE_49", time () + 3600);

echo htmlentities (\$_COOKIE ["Cookie49"]) . "<br>n";
echo htmlentities (\$_COOKIE ["Cookie49a"]) . "<br>n";
echo htmlentities (\$_POST ["text1"]) . "<br>n";

?>
049/form1.php
POST /049/form1.php HTTP/1.1
host: localhost
Content-Type: application/x-www-form-urlencoded
Content-Length: 21
Cookie: Cookie49a=HALLO_COOKIE49a

text1=DIES_IST_TEXT49
049/httprequest01.txt
001 001 001 001<br>
001 002 001 001<br>
001 001 001 002<br>
001 002 001 002<br>
002 001 002 002<br>
002 002 002 002<br>
002 001 002 002<br>
002 002 002 002<br>
001 001 001 001<br>
002 001 001 001<br>
001 002 001 002<br>
002 002 001 002<br>
001 002 002 002<br>
002 002 002 002<br>
001 002 002 002<br>
002 002 002 002<br>
049/output01.txt
david@intel-compute-stick:~\$ mkdir /var/www/html/049
david@intel-compute-stick:~\$ cd /var/www/html/049
david@intel-compute-stick:/var/www/html/049\$ mysql -u root -p
Enter password:
ERROR 1698 (28000): Access denied for user 'root'@'localhost'
david@intel-compute-stick:/var/www/html/049\$ mysql -u root -p
Enter password:
Welcome to the MariaDB monitor.  Commands end with ; or g.
Your MariaDB connection id is 103
Server version: 10.5.12-MariaDB-0+deb11u1 Debian 11

Copyright (c) 2000, 2018, Oracle, MariaDB Corporation Ab and others.

Type 'help;' or 'h' for help. Type 'c' to clear the current input statement.

MariaDB [(none)]> CREATE DATABASE test049;
Query OK, 1 row affected (0.029 sec)

MariaDB [(none)]> USE test049
Database changed
MariaDB [test049]> CREATE TABLE abc (name1 VARCHAR (32), name2 VARCHAR (32));
Query OK, 0 rows affected (0.182 sec)

MariaDB [test049]> CREATE TABLE def (name3 VARCHAR (32), name4 VARCHAR (32));
Query OK, 0 rows affected (0.087 sec)

MariaDB [test049]> INSERT INTO abc VALUES ("001", "001");
Query OK, 1 row affected (0.047 sec)

MariaDB [test049]> INSERT INTO abc (name2, name1) VALUES ("002", "001");
Query OK, 1 row affected (0.033 sec)

MariaDB [test049]> INSERT INTO abc (name1, name2) VALUES ("002", "001");
Query OK, 1 row affected (0.029 sec)

MariaDB [test049]> INSERT INTO abc (name1, name2) VALUES ("002", "002");
Query OK, 1 row affected (0.032 sec)

MariaDB [test049]> INSERT INTO def (name3, name4) VALUES ("001", "001");
Query OK, 1 row affected (0.036 sec)

MariaDB [test049]> INSERT INTO def VALUES ("001", "002");
Query OK, 1 row affected (0.030 sec)

MariaDB [test049]> INSERT INTO def VALUES ("abc", "abc");
Query OK, 1 row affected (0.029 sec)

MariaDB [test049]> SELECT * FROM abc;
+-------+-------+
| name1 | name2 |
+-------+-------+
| 001   | 001   |
| 001   | 002   |
| 002   | 001   |
| 002   | 002   |
+-------+-------+
4 rows in set (0.001 sec)

MariaDB [test049]> SELECT * FROM def;
+-------+-------+
| name3 | name4 |
+-------+-------+
| 001   | 001   |
| 001   | 002   |
| abc   | abc   |
+-------+-------+
3 rows in set (0.001 sec)

MariaDB [test049]> SELECT * FROM abc JOIN def;
+-------+-------+-------+-------+
| name1 | name2 | name3 | name4 |
+-------+-------+-------+-------+
| 001   | 001   | 001   | 001   |
| 001   | 001   | 001   | 002   |
| 001   | 001   | abc   | abc   |
| 001   | 002   | 001   | 001   |
| 001   | 002   | 001   | 002   |
| 001   | 002   | abc   | abc   |
| 002   | 001   | 001   | 001   |
| 002   | 001   | 001   | 002   |
| 002   | 001   | abc   | abc   |
| 002   | 002   | 001   | 001   |
| 002   | 002   | 001   | 002   |
| 002   | 002   | abc   | abc   |
+-------+-------+-------+-------+
12 rows in set (0.002 sec)

MariaDB [test049]> SELECT * FROM abc INNER JOIN def ON abc.name1 = def.name3;
+-------+-------+-------+-------+
| name1 | name2 | name3 | name4 |
+-------+-------+-------+-------+
| 001   | 001   | 001   | 001   |
| 001   | 001   | 001   | 002   |
| 001   | 002   | 001   | 001   |
| 001   | 002   | 001   | 002   |
+-------+-------+-------+-------+
4 rows in set (0.032 sec)

MariaDB [test049]> SELECT * FROM abc LEFT JOIN def ON abc.name1 = def.name3;
+-------+-------+-------+-------+
| name1 | name2 | name3 | name4 |
+-------+-------+-------+-------+
| 001   | 001   | 001   | 001   |
| 001   | 002   | 001   | 001   |
| 001   | 001   | 001   | 002   |
| 001   | 002   | 001   | 002   |
| 002   | 001   | NULL  | NULL  |
| 002   | 002   | NULL  | NULL  |
+-------+-------+-------+-------+
6 rows in set (0.024 sec)

MariaDB [test049]> SELECT * FROM abc RIGHT JOIN def ON abc.name2 = def.name4;
+-------+-------+-------+-------+
| name1 | name2 | name3 | name4 |
+-------+-------+-------+-------+
| 001   | 001   | 001   | 001   |
| 001   | 002   | 001   | 002   |
| 002   | 001   | 001   | 001   |
| 002   | 002   | 001   | 002   |
| NULL  | NULL  | abc   | abc   |
+-------+-------+-------+-------+
5 rows in set (0.002 sec)

MariaDB [test049]> QUIT
Bye
david@intel-compute-stick:/var/www/html/049\$ php database.php > output01.txt
PHP Warning:  mysql_fetch_row() expects parameter 1 to be resource, boolean given in /var/www/html/049/database.php on line 14
david@intel-compute-stick:/var/www/html/049\$ php database.php > output01.txt
david@intel-compute-stick:/var/www/html/049\$ http localhost 80
bash: http: Kommando nicht gefunden.
david@intel-compute-stick:/var/www/html/049\$ telnet localhost 80
Trying ::1...
Connected to localhost.
Escape character is '\^]'.
POST /049/form1.php HTTP/1.1
host: localhost
Content-Type: application/x-www-form-urlencoded
Content-Length: 21

text1=DIES_IST_TEXT49
HTTP/1.1 200 OK
Date: Sat, 21 May 2022 15:55:01 GMT
Server: Apache/2.4.52 (Debian)
Set-Cookie: PHPSESSID=c1ekbufpsv5p0vnlkl13t97ht4; path=/
Expires: Thu, 19 Nov 1981 08:52:00 GMT
Cache-Control: no-store, no-cache, must-revalidate, post-check=0, pre-check=0
Pragma: no-cache
Set-Cookie: Cookie49=DAS_IST_COOKIE_49; expires=Sat, 21-May-2022 16:55:02 GMT; Max-Age=3600
Vary: Accept-Encoding
Content-Length: 184
Content-Type: text/html; charset=UTF-8


<form method="POST" action="./form1.php">
<input type="text" name="text1"></input>
<input type="submit"></input>
</form>

c1ekbufpsv5p0vnlkl13t97ht4<br>
<br>
<br>
DIES_IST_TEXT49<br>

Connection closed by foreign host.
david@intel-compute-stick:/var/www/html/049\$ telnet localhost 80
Trying ::1...
Connected to localhost.
Escape character is '\^]'.
POST /049/form1.php HTTP/1.1
host: localhost
Content-Type: application/x-www-form-urlencoded
Content-Length: 21
Cookie: Cookie49a=HALLO_COOKIE49a

text1=DIES_IST_TEXT49
HTTP/1.1 200 OK
Date: Sat, 21 May 2022 15:55:25 GMT
Server: Apache/2.4.52 (Debian)
Set-Cookie: PHPSESSID=1cjnknmqoblbbco3k7bsphtbd7; path=/
Expires: Thu, 19 Nov 1981 08:52:00 GMT
Cache-Control: no-store, no-cache, must-revalidate, post-check=0, pre-check=0
Pragma: no-cache
Set-Cookie: Cookie49=DAS_IST_COOKIE_49; expires=Sat, 21-May-2022 16:55:26 GMT; Max-Age=3600
Vary: Accept-Encoding
Content-Length: 199
Content-Type: text/html; charset=UTF-8


<form method="POST" action="./form1.php">
<input type="text" name="text1"></input>
<input type="submit"></input>
</form>

1cjnknmqoblbbco3k7bsphtbd7<br>
<br>
HALLO_COOKIE49a<br>
DIES_IST_TEXT49<br>

Connection closed by foreign host.
david@intel-compute-stick:/var/www/html/049\$

049/output02.txt
127<br>
93<br>
88<br>
5<br>
77<br>
4<br>
15<br>
47<br>
57<br>
74<br>
8<br>
78<br>
91<br>
109<br>
0<br>
75<br>
27<br>
85<br>
120<br>
16<br>
71<br>
2<br>
76<br>
73<br>
32<br>
61<br>
50<br>
110<br>
98<br>
59<br>
64<br>
13<br>
17<br>
33<br>
80<br>
9<br>
83<br>
<br><br>

127<br>
93<br>
88<br>
5<br>
77<br>
4<br>
15<br>
47<br>
57<br>
74<br>
8<br>
78<br>
91<br>
109<br>
0<br>
75<br>
27<br>
85<br>
120<br>
70<br>
13<br>
18<br>
80<br>
53<br>
69<br>
37<br>
3<br>
36<br>
41<br>
<br><br>

16<br>
71<br>
2<br>
76<br>
73<br>
32<br>
61<br>
50<br>
110<br>
5<br>
98<br>
59<br>
64<br>
13<br>
17<br>
33<br>
80<br>
9<br>
83<br>
70<br>
18<br>
75<br>
57<br>
8<br>
27<br>
53<br>
69<br>
15<br>
91<br>
37<br>
3<br>
36<br>
41<br>
<br><br>

5<br>
<br><br>

15<br>
57<br>
8<br>
91<br>
75<br>
27<br>
<br><br>

13<br>
80<br>
<br><br>

8<br>
13<br>
15<br>
27<br>
57<br>
75<br>
80<br>
91<br>
<br><br>

8<br>
13<br>
15<br>
27<br>
57<br>
75<br>
80<br>
91<br>
<br><br>

5<br>
13<br>
80<br>
<br><br>

5<br>
13<br>
80<br>
<br><br>

5<br>
8<br>
15<br>
27<br>
57<br>
75<br>
91<br>
<br><br>

5<br>
8<br>
15<br>
27<br>
57<br>
75<br>
91<br>
<br><br>


049/output03.txt
<?php
include ('/home/david/mysqldata.php');

\$handle = mysql_connect ("localhost", \$MYSQL_NAME, \$MYSQL_PASSWORD);

mysql_query ("CREATE DATABASE quantity049", \$handle);

mysql_select_db ("quantity049", \$handle);

mysql_query ("CREATE TABLE a (x INTEGER)", \$handle);
mysql_query ("CREATE TABLE b (x INTEGER)", \$handle);
mysql_query ("CREATE TABLE c (x INTEGER)", \$handle);

for (\$i = 0;  \$i < 20;  \$i++) {
    mysql_query ("INSERT INTO a VALUES ("" . rand () % 128 . "")", \$handle);
    mysql_query ("INSERT INTO b VALUES ("" . rand () % 128 . "")", \$handle);
    mysql_query ("INSERT INTO c VALUES ("" . rand () % 128 . "")", \$handle);
}

/*
a OR b
a OR c
b OR c
*/

\$result = mysql_query ("SELECT x FROM (SELECT x FROM a UNION SELECT x FROM b) x", \$handle);
while (\$row = mysql_fetch_row (\$result))
    echo \$row [0] . "<br>n";
echo "<br><br>nn";
\$result = mysql_query ("SELECT x FROM (SELECT x FROM a UNION SELECT x FROM c) x", \$handle);
while (\$row = mysql_fetch_row (\$result))
    echo \$row [0] . "<br>n";
echo "<br><br>nn";
\$result = mysql_query ("SELECT x FROM (SELECT x FROM b UNION SELECT x FROM c) x", \$handle);
while (\$row = mysql_fetch_row (\$result))
    echo \$row [0] . "<br>n";
echo "<br><br>nn";

/*
a AND b
a AND c
b AND c
*/

\$result = mysql_query ("SELECT x FROM (SELECT x FROM a INTERSECT SELECT x FROM b) x", \$handle);
while (\$row = mysql_fetch_row (\$result))
    echo \$row [0] . "<br>n";
echo "<br><br>nn";
\$result = mysql_query ("SELECT x FROM (SELECT x FROM a INTERSECT SELECT x FROM c) x", \$handle);
while (\$row = mysql_fetch_row (\$result))
    echo \$row [0] . "<br>n";
echo "<br><br>nn";
\$result = mysql_query ("SELECT x FROM (SELECT x FROM b INTERSECT SELECT x FROM c) x", \$handle);
while (\$row = mysql_fetch_row (\$result))
    echo \$row [0] . "<br>n";
echo "<br><br>nn";


/*
(a OR b) AND c = a AND c OR b AND c
*/

\$result = mysql_query ("SELECT x FROM (
    SELECT x FROM (SELECT x FROM a UNION SELECT x FROM b) x
    INTERSECT
    SELECT x FROM c
) x ORDER BY x", \$handle);
while (\$row = mysql_fetch_row (\$result))
    echo \$row [0] . "<br>n";
echo "<br><br>nn";

\$result = mysql_query ("SELECT x FROM (
    SELECT x FROM (SELECT x FROM a INTERSECT SELECT x FROM c) x
    UNION
    SELECT x FROM (SELECT x FROM b INTERSECT SELECT x FROM c) x
) x ORDER BY x", \$handle);
while (\$row = mysql_fetch_row (\$result))
    echo \$row [0] . "<br>n";
echo "<br><br>nn";

/*
(a OR c) AND b = a AND b OR c AND b
*/

\$result = mysql_query ("SELECT x FROM (
    SELECT x FROM (SELECT x FROM a UNION SELECT x FROM c) x
    INTERSECT
    SELECT x FROM b
) x ORDER BY x", \$handle);
while (\$row = mysql_fetch_row (\$result))
    echo \$row [0] . "<br>n";
echo "<br><br>nn";

\$result = mysql_query ("SELECT x FROM (
    SELECT x FROM (SELECT x FROM a INTERSECT SELECT x FROM b) x
    UNION
    SELECT x FROM (SELECT x FROM c INTERSECT SELECT x FROM b) x
) x ORDER BY x", \$handle);
while (\$row = mysql_fetch_row (\$result))
    echo \$row [0] . "<br>n";
echo "<br><br>nn";

/*
(b OR c) AND a = b AND a OR c AND a
*/

\$result = mysql_query ("SELECT x FROM (
    SELECT x FROM (SELECT x FROM b UNION SELECT x FROM c) x
    INTERSECT
    SELECT x FROM a
) x ORDER BY x", \$handle);
while (\$row = mysql_fetch_row (\$result))
    echo \$row [0] . "<br>n";
echo "<br><br>nn";

\$result = mysql_query ("SELECT x FROM (
    SELECT x FROM (SELECT x FROM b INTERSECT SELECT x FROM a) x
    UNION
    SELECT x FROM (SELECT x FROM c INTERSECT SELECT x FROM a) x
) x ORDER BY x", \$handle);
while (\$row = mysql_fetch_row (\$result))
    echo \$row [0] . "<br>n";
echo "<br><br>nn";

mysql_close (\$handle);
?>

049/quantity.php
<?php
include ('/home/david/mysqldata.php');

\$handle = mysql_connect ("localhost", \$MYSQL_NAME, \$MYSQL_PASSWORD);

mysql_select_db ("test050", \$handle);

mysql_query ("INSERT INTO def ("002", "002")", \$handle);

\$result = mysql_query ("SELECT * FROM abc INNER JOIN def ON abc.name1 = def.name3", \$handle);
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["name1"] . " " . \$row ["name2"] . " " . \$row ["name3"] . " " . \$row ["name4"] . "<br>n";

\$result = mysql_query ("SELECT * FROM abc LEFT JOIN def ON abc.name2 = def.name4", \$handle);
while (\$row = mysql_fetch_row  (\$result))
    echo \$row [0] . " " . \$row [1] . " " . \$row [2] . " " . \$row [3] . "<br>n";

mysql_close (\$handle);
?>
050/database.php
<?php
session_start ();
?>

<form method="POST" action="./form1.php">
<input type="text" name="text1"></input>
<input type="submit"></input>
</form>

<?php
echo session_id () . "<br>n";

setcookie ("Cookie50", "DIES_IST_COOKIE_50", time  () + 3600);

echo htmlentities (\$_POST ["text1"]) . "<br>n";
echo htmlentities (\$_COOKIE ["Cookie50"]) . "<br>n";
echo htmlentities (\$_COOKIE ["Cookie50a"]) . "<br>n";
?>
050/form1.php
POST /050/form1.php HTTP/1.1
host: localhost
Cookie: Cookie50a=DIES_IST_COOKIE_50a
Content-Type: application/x-www-form-urlencoded
Content-Length: 19

text1=HALLO_TEXT_50
050/httprequest01.txt
001 001 001 001<br>
001 001 001 002<br>
001 002 001 001<br>
001 002 001 002<br>
001 001 001 001<br>
002 001 001 001<br>
001 002 001 002<br>
002 002 001 002<br>
050/output01.txt
14<br>
8<br>
3<br>
22<br>
16<br>
21<br>
1<br>
0<br>
20<br>
9<br>
13<br>
19<br>
17<br>
28<br>
4<br>
29<br>
30<br>
5<br>
6<br>
10<br>
27<br>
<br><br>

14<br>
8<br>
3<br>
22<br>
16<br>
21<br>
1<br>
0<br>
20<br>
9<br>
13<br>
19<br>
17<br>
28<br>
4<br>
29<br>
6<br>
2<br>
27<br>
11<br>
25<br>
7<br>
24<br>
12<br>
<br><br>

22<br>
3<br>
9<br>
30<br>
5<br>
0<br>
21<br>
16<br>
6<br>
10<br>
27<br>
4<br>
2<br>
11<br>
25<br>
7<br>
28<br>
24<br>
1<br>
29<br>
19<br>
12<br>
<br><br>

3<br>
22<br>
16<br>
21<br>
0<br>
9<br>
4<br>
<br><br>

1<br>
19<br>
28<br>
4<br>
29<br>
<br><br>

6<br>
27<br>
4<br>
<br><br>

1<br>
4<br>
6<br>
19<br>
27<br>
28<br>
29<br>
<br><br>

1<br>
4<br>
6<br>
19<br>
27<br>
28<br>
29<br>
<br><br>

0<br>
3<br>
4<br>
6<br>
9<br>
16<br>
21<br>
22<br>
27<br>
<br><br>

0<br>
3<br>
4<br>
6<br>
9<br>
16<br>
21<br>
22<br>
27<br>
<br><br>

0<br>
1<br>
3<br>
4<br>
9<br>
16<br>
19<br>
21<br>
22<br>
28<br>
29<br>
<br><br>

0<br>
1<br>
3<br>
4<br>
9<br>
16<br>
19<br>
21<br>
22<br>
28<br>
29<br>
<br><br>

050/output02.txt
david@intel-compute-stick:~\$ mysql -u root -p
Enter password:
ERROR 1698 (28000): Access denied for user 'root'@'localhost'
david@intel-compute-stick:~\$ mysql -u root -p
Enter password:
ERROR 1698 (28000): Access denied for user 'root'@'localhost'
david@intel-compute-stick:~\$ mysql -u root -p
Enter password:
ERROR 1698 (28000): Access denied for user 'root'@'localhost'
david@intel-compute-stick:~\$ mysql -u root -p
Enter password:
Welcome to the MariaDB monitor.  Commands end with ; or g.
Your MariaDB connection id is 145
Server version: 10.5.12-MariaDB-0+deb11u1 Debian 11

Copyright (c) 2000, 2018, Oracle, MariaDB Corporation Ab and others.

Type 'help;' or 'h' for help. Type 'c' to clear the current input statement.

MariaDB [(none)]> CREATE DATABASE test050;
Query OK, 1 row affected (0.002 sec)

MariaDB [(none)]> USE test050;
Database changed
MariaDB [test050]> CREATE TABLE abc (name1 VARCHAR (32), name2 VARCHAR (32));
Query OK, 0 rows affected (0.051 sec)

MariaDB [test050]> CREATE TABLE def (name3 VARCHAR (32), name4 VARCHAR (32));
Query OK, 0 rows affected (0.053 sec)

MariaDB [test050]> INSERT INTO abc VALUES ("001", "001");
Query OK, 1 row affected (0.028 sec)

MariaDB [test050]> INSERT INTO abc (name1, name2) VALUES ("001", "002");
Query OK, 1 row affected (0.032 sec)

MariaDB [test050]> INSERT INTO abc (name2, name1) VALUES ("001", "002");
Query OK, 1 row affected (0.033 sec)

MariaDB [test050]> INSERT INTO abc VALUES ("002", "002");
Query OK, 1 row affected (0.030 sec)

MariaDB [test050]> INSERT INTOO def VALUES ("001", "001");
ERROR 1064 (42000): You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near 'def VALUES ("001", "001")' at line 1
MariaDB [test050]> INSERT INTO def VALUES ("001", "001");
Query OK, 1 row affected (0.035 sec)

MariaDB [test050]> INSERT INTO def VALUES ("001", "002");
Query OK, 1 row affected (0.031 sec)

MariaDB [test050]> INSERT INTO def VALUES ("abc", "abc");
Query OK, 1 row affected (0.027 sec)

MariaDB [test050]> SELECT * FROM abc;
+-------+-------+
| name1 | name2 |
+-------+-------+
| 001   | 001   |
| 001   | 002   |
| 002   | 001   |
| 002   | 002   |
+-------+-------+
4 rows in set (0.001 sec)

MariaDB [test050]> SELECT * FROM def;
+-------+-------+
| name3 | name4 |
+-------+-------+
| 001   | 001   |
| 001   | 002   |
| abc   | abc   |
+-------+-------+
3 rows in set (0.001 sec)

MariaDB [test050]> SELECT * FROM abc JOIN def;
+-------+-------+-------+-------+
| name1 | name2 | name3 | name4 |
+-------+-------+-------+-------+
| 001   | 001   | 001   | 001   |
| 001   | 001   | 001   | 002   |
| 001   | 001   | abc   | abc   |
| 001   | 002   | 001   | 001   |
| 001   | 002   | 001   | 002   |
| 001   | 002   | abc   | abc   |
| 002   | 001   | 001   | 001   |
| 002   | 001   | 001   | 002   |
| 002   | 001   | abc   | abc   |
| 002   | 002   | 001   | 001   |
| 002   | 002   | 001   | 002   |
| 002   | 002   | abc   | abc   |
+-------+-------+-------+-------+
12 rows in set (0.002 sec)

MariaDB [test050]> SELECT * FROM abc INNER JOIN def ON abc.name1 = def.name3;
+-------+-------+-------+-------+
| name1 | name2 | name3 | name4 |
+-------+-------+-------+-------+
| 001   | 001   | 001   | 001   |
| 001   | 001   | 001   | 002   |
| 001   | 002   | 001   | 001   |
| 001   | 002   | 001   | 002   |
+-------+-------+-------+-------+
4 rows in set (0.002 sec)

MariaDB [test050]> SELECT * FROM abc LEFT JOIN def ON abc.name1 = def.name3;
+-------+-------+-------+-------+
| name1 | name2 | name3 | name4 |
+-------+-------+-------+-------+
| 001   | 001   | 001   | 001   |
| 001   | 002   | 001   | 001   |
| 001   | 001   | 001   | 002   |
| 001   | 002   | 001   | 002   |
| 002   | 001   | NULL  | NULL  |
| 002   | 002   | NULL  | NULL  |
+-------+-------+-------+-------+
6 rows in set (0.002 sec)

MariaDB [test050]> SELECT * FROM abc RIGHT JOIN def ON abc.name1 = def.name3;
+-------+-------+-------+-------+
| name1 | name2 | name3 | name4 |
+-------+-------+-------+-------+
| 001   | 001   | 001   | 001   |
| 001   | 001   | 001   | 002   |
| 001   | 002   | 001   | 001   |
| 001   | 002   | 001   | 002   |
| NULL  | NULL  | abc   | abc   |
+-------+-------+-------+-------+
5 rows in set (0.002 sec)

MariaDB [test050]> QUIT
Bye
david@intel-compute-stick:~\$ cd /var/www/html/050
david@intel-compute-stick:/var/www/html/050\$ php database.php > output01.txt
david@intel-compute-stick:/var/www/html/050\$ telnet 127.0.0.1 80
Trying 127.0.0.1...
Connected to 127.0.0.1.
Escape character is '\^]'.
POST /050/form1.php HTTP/1.1
host: localhost
Cookie: Cookie50a=DIES_IST_COOKIE_50a
Content-Type: application/x-www-form-urlencoded
Content-Length: 19

text1=HALLO_TEXT_50
HTTP/1.1 200 OK
Date: Sun, 22 May 2022 14:45:05 GMT
Server: Apache/2.4.52 (Debian)
Set-Cookie: PHPSESSID=c861vm0spht7bspidko88j10j7; path=/
Expires: Thu, 19 Nov 1981 08:52:00 GMT
Cache-Control: no-store, no-cache, must-revalidate, post-check=0, pre-check=0
Pragma: no-cache
Set-Cookie: Cookie50=DIES_IST_COOKIE_50; expires=Sun, 22-May-2022 15:45:06 GMT; Max-Age=3600
Vary: Accept-Encoding
Content-Length: 201
Content-Type: text/html; charset=UTF-8


<form method="POST" action="./form1.php">
<input type="text" name="text1"></input>
<input type="submit"></input>
</form>

c861vm0spht7bspidko88j10j7<br>
HALLO_TEXT_50<br>
<br>
DIES_IST_COOKIE_50a<br>

Connection closed by foreign host.
david@intel-compute-stick:/var/www/html/050\$ php quantity.php > output01.txt
database.php       form1.php          httprequest01.txt  output01.txt       quantity.php
david@intel-compute-stick:/var/www/html/050\$ php quantity.php > output02.txt
david@intel-compute-stick:/var/www/html/050\$ cat *

050/output03.txt
<?php
include ('/home/david/mysqldata.php');

\$handle = mysql_connect ("localhost", \$MYSQL_NAME, \$MYSQL_PASSWORD);

mysql_query ("CREATE DATABASE quantity50", \$handle);

mysql_select_db ("quantity50", \$handle);

mysql_query ("CREATE TABLE a (x INTEGER)", \$handle);
mysql_query ("CREATE TABLE b (x INTEGER)", \$handle);
mysql_query ("CREATE TABLE c (x INTEGER)", \$handle);

for (\$i = 0;  \$i < 20;  \$i++) {
    mysql_query ("INSERT INTO a VALUES ("" . rand () % 32 . "")", \$handle);
    mysql_query ("INSERT INTO b VALUES ("" . rand () % 32 . "")", \$handle);
    mysql_query ("INSERT INTO c VALUES ("" . rand () % 32 . "")", \$handle);
}

/*
a OR b
a OR c
b OR c
*/

\$result = mysql_query ("SELECT x FROM (SELECT x FROM a UNION SELECT x FROM b) x", \$handle);
while (\$row = mysql_fetch_row (\$result))
    echo \$row [0] . "<br>n";
echo "<br><br>nn";
\$result = mysql_query ("SELECT x FROM (SELECT x FROM a UNION SELECT x FROM c) x", \$handle);
while (\$row = mysql_fetch_row (\$result))
    echo \$row [0] . "<br>n";
echo "<br><br>nn";
\$result = mysql_query ("SELECT x FROM (SELECT x FROM b UNION SELECT x FROM c) x", \$handle);
while (\$row = mysql_fetch_row (\$result))
    echo \$row [0] . "<br>n";
echo "<br><br>nn";

/*
a AND b
a AND c
b AND c
*/

\$result = mysql_query ("SELECT x FROM (SELECT x FROM a INTERSECT SELECT x FROM b) x", \$handle);
while (\$row = mysql_fetch_row (\$result))
    echo \$row [0] . "<br>n";
echo "<br><br>nn";
\$result = mysql_query ("SELECT x FROM (SELECT x FROM a INTERSECT SELECT x FROM c) x", \$handle);
while (\$row = mysql_fetch_row (\$result))
    echo \$row [0] . "<br>n";
echo "<br><br>nn";
\$result = mysql_query ("SELECT x FROM (SELECT x FROM b INTERSECT SELECT x FROM c) x", \$handle);
while (\$row = mysql_fetch_row (\$result))
    echo \$row [0] . "<br>n";
echo "<br><br>nn";

/*
(a OR b) AND c = a AND c OR b AND c
*/

\$result = mysql_query ("SELECT x FROM (
    SELECT x FROM (SELECT x FROM a UNION SELECT x FROM b) x
    INTERSECT
    SELECT x FROM c
) x ORDER BY x", \$handle);
while (\$row = mysql_fetch_row (\$result))
    echo \$row [0] . "<br>n";
echo "<br><br>nn";

\$result = mysql_query ("SELECT x FROM (
    SELECT x FROM (SELECT x FROM a INTERSECT SELECT x FROM c) x
    UNION
    SELECT x FROM (SELECT x FROM b INTERSECT SELECT x FROM c) x
) x ORDER BY x", \$handle);
while (\$row = mysql_fetch_row (\$result))
    echo \$row [0] . "<br>n";
echo "<br><br>nn";

/*
(a OR c) AND b = a AND b OR c AND b
*/
\$result = mysql_query ("SELECT x FROM (
    SELECT x FROM (SELECT x FROM a UNION SELECT x FROM c) x
    INTERSECT
    SELECT x FROM b
) x ORDER BY x", \$handle);
while (\$row = mysql_fetch_row (\$result))
    echo \$row [0] . "<br>n";
echo "<br><br>nn";

\$result = mysql_query ("SELECT x FROM (
    SELECT x FROM (SELECT x FROM a INTERSECT SELECT x FROM b) x
    UNION
    SELECT x FROM (SELECT x FROM c INTERSECT SELECT x FROM b) x
) x ORDER BY x", \$handle);
while (\$row = mysql_fetch_row (\$result))
    echo \$row [0] . "<br>n";
echo "<br><br>nn";

/*
(b OR c) AND a = b AND a OR c AND a
*/
\$result = mysql_query ("SELECT x FROM (
    SELECT x FROM (SELECT x FROM b UNION SELECT x FROM c) x
    INTERSECT
    SELECT x FROM a
) x ORDER BY x", \$handle);
while (\$row = mysql_fetch_row (\$result))
    echo \$row [0] . "<br>n";
echo "<br><br>nn";

\$result = mysql_query ("SELECT x FROM (
    SELECT x FROM (SELECT x FROM b INTERSECT SELECT x FROM a) x
    UNION
    SELECT x FROM (SELECT x FROM c INTERSECT SELECT x FROM a) x
) x ORDER BY x", \$handle);
while (\$row = mysql_fetch_row (\$result))
    echo \$row [0] . "<br>n";
echo "<br><br>nn";
?>
050/quantity.php
<?php
include ('/home/david/mysqldata.php');

\$handle = mysql_connect ("localhost", \$MYSQL_NAME, \$MYSQL_PASSWORD);

mysql_select_db ("test051", \$handle);

\$result = mysql_query ("SELECT * FROM abc INNER JOIN def ON abc.name1 = def.name3", \$handle);
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["name1"] . " " . \$row ["name2"] . " " . \$row ["name3"] . " " . \$row ["name4"] . "<br>n";

\$result = mysql_query ("SELECT * FROM abc RIGHT JOIN def ON abc.name2 = def.name4", \$handle);
while (\$row = mysql_fetch_row (\$result))
    echo \$row [0] . " " . \$row [1] . " " . \$row [2] . " " . \$row [3] . "<br>n";

mysql_close (\$handle);
?>
051/database.php
<?php
session_start ();
?>

<form method="POST" action="./form1.php">
<input type="password" name="password1"></input>
<input type="submit"></input>
</form>

<?php
echo session_id () . "<br>n";

echo htmlentities (\$_POST ["password1"]) . "<br>n";
echo htmlentities (\$_COOKIE ["Cookie51a"]) . "<br>n";

setcookie ("Cookie51", "DIES_IST_COOKIE_51", time () + 3600);

echo htmlentities (\$_COOKIE ["Cookie51"]) . "<br>n";

session_destroy ();
?>
051/form1.php
POST /051/form1.php HTTP/1.1
host: localhost
Cookie: Cookie51a=HALLO_DIES_IST_COOKIE_51a
Content-Type: application/x-www-form-urlencoded
Content-Length: 32

password1=HALLO_HIER_PASSWORT_51
051/httprequest01.txt
001 001 001 001<br>
001 002 001 001<br>
001 001 001 002<br>
001 002 001 002<br>
002 001 002 002<br>
002 002 002 002<br>
001 001 001 001<br>
001 002 001 002<br>
001 002 002 002<br>
002 001 001 001<br>
002 002 001 002<br>
002 002 002 002<br>
  abc def<br>
051/output01.txt
david@intel-compute-stick:~\$ mysql -u root -p
Enter password:
Welcome to the MariaDB monitor.  Commands end with ; or g.
Your MariaDB connection id is 324
Server version: 10.5.12-MariaDB-0+deb11u1 Debian 11

Copyright (c) 2000, 2018, Oracle, MariaDB Corporation Ab and others.

Type 'help;' or 'h' for help. Type 'c' to clear the current input statement.

MariaDB [(none)]> CREATE DATABASE test051
    -> ;
Query OK, 1 row affected (0.029 sec)

MariaDB [(none)]> USE test051;
Database changed
MariaDB [test051]> CREATE TABLE abc (name1 VARCHAR (32), name2 VARCHAR (32));
Query OK, 0 rows affected (0.070 sec)

MariaDB [test051]> CREATE TABLE def (name3 VARCHAR (32), name4 VARCHAR (32));
Query OK, 0 rows affected (0.077 sec)

MariaDB [test051]> INSERT INTO abc VALUES ("001", "001");
Query OK, 1 row affected (0.029 sec)

MariaDB [test051]> INSERT INTO abc (name1, name2) VALUES ("001", "002");
Query OK, 1 row affected (0.035 sec)

MariaDB [test051]> INSERT INTO abc (name2, name1) VALUES ("001", "002");
Query OK, 1 row affected (0.032 sec)

MariaDB [test051]> INSERT INTO abc (name1, name2) VALUES ("002", "002");
Query OK, 1 row affected (0.027 sec)

MariaDB [test051]> INSERT INTO def (name3, name4) VALUES ("001", "001");
Query OK, 1 row affected (0.029 sec)

MariaDB [test051]> INSERT INTO def (name3, name4) VALUES ("001", "002");
Query OK, 1 row affected (0.029 sec)

MariaDB [test051]> INSERT INTO def (name3, name4) VALUES ("002", "002");
Query OK, 1 row affected (0.028 sec)

MariaDB [test051]> INSERT INTO def (name3, name4) VALUES ("abc", "def");
Query OK, 1 row affected (0.030 sec)

MariaDB [test051]> SELECT * FROM abc;
+-------+-------+
| name1 | name2 |
+-------+-------+
| 001   | 001   |
| 001   | 002   |
| 002   | 001   |
| 002   | 002   |
+-------+-------+
4 rows in set (0.001 sec)

MariaDB [test051]> SELECT * FROM def;
+-------+-------+
| name3 | name4 |
+-------+-------+
| 001   | 001   |
| 001   | 002   |
| 002   | 002   |
| abc   | def   |
+-------+-------+
4 rows in set (0.001 sec)

MariaDB [test051]> SELECT * FROM abc JOIN def;
+-------+-------+-------+-------+
| name1 | name2 | name3 | name4 |
+-------+-------+-------+-------+
| 001   | 001   | 001   | 001   |
| 001   | 002   | 001   | 001   |
| 002   | 001   | 001   | 001   |
| 002   | 002   | 001   | 001   |
| 001   | 001   | 001   | 002   |
| 001   | 002   | 001   | 002   |
| 002   | 001   | 001   | 002   |
| 002   | 002   | 001   | 002   |
| 001   | 001   | 002   | 002   |
| 001   | 002   | 002   | 002   |
| 002   | 001   | 002   | 002   |
| 002   | 002   | 002   | 002   |
| 001   | 001   | abc   | def   |
| 001   | 002   | abc   | def   |
| 002   | 001   | abc   | def   |
| 002   | 002   | abc   | def   |
+-------+-------+-------+-------+
16 rows in set (0.001 sec)

MariaDB [test051]> SELECT * FROM abc LEFT JOIN def ON abc.name1 = def.name3;
+-------+-------+-------+-------+
| name1 | name2 | name3 | name4 |
+-------+-------+-------+-------+
| 001   | 001   | 001   | 001   |
| 001   | 002   | 001   | 001   |
| 001   | 001   | 001   | 002   |
| 001   | 002   | 001   | 002   |
| 002   | 001   | 002   | 002   |
| 002   | 002   | 002   | 002   |
+-------+-------+-------+-------+
6 rows in set (0.002 sec)

MariaDB [test051]> SELECT * FROM abc RIGHT JOIN def ON abc.name2 = def.name4;
+-------+-------+-------+-------+
| name1 | name2 | name3 | name4 |
+-------+-------+-------+-------+
| 001   | 001   | 001   | 001   |
| 001   | 002   | 001   | 002   |
| 001   | 002   | 002   | 002   |
| 002   | 001   | 001   | 001   |
| 002   | 002   | 001   | 002   |
| 002   | 002   | 002   | 002   |
| NULL  | NULL  | abc   | def   |
+-------+-------+-------+-------+
7 rows in set (0.002 sec)

MariaDB [test051]> QUIT
Bye
david@intel-compute-stick:~\$ cd /var/www/html/0
001/  004/  007/  010/  013/  015/  018/  021/  024/  027/  031/  034/  037/  040/  043/  046/  049/
002/  005/  008/  011/  014/  016/  019/  022/  025/  028/  032/  035/  038/  041/  044/  047/  050/
003/  006/  009/  012/  014a/ 017/  020/  023/  026/  030/  033/  036/  039/  042/  045/  048/  051/
david@intel-compute-stick:~\$ cd /var/www/html/0
001/  004/  007/  010/  013/  015/  018/  021/  024/  027/  031/  034/  037/  040/  043/  046/  049/
002/  005/  008/  011/  014/  016/  019/  022/  025/  028/  032/  035/  038/  041/  044/  047/  050/
003/  006/  009/  012/  014a/ 017/  020/  023/  026/  030/  033/  036/  039/  042/  045/  048/  051/
david@intel-compute-stick:~\$ cd /var/www/html/051/
david@intel-compute-stick:/var/www/html/051\$ php database.php > output01.txt
david@intel-compute-stick:/var/www/html/051\$ telnet 127.0.0.1 80
Trying 127.0.0.1...
Connected to 127.0.0.1.
Escape character is '\^]'.
POST /051/form1.php HTTP/1.1
host: localhost
Cookie: Cookie51a=HALLO_DIES_IST_COOKIE_51a
Content-Type: application/x-www-form-urlencoded
Content-Length: 32

password1=HALLO_HIER_PASSWORT_51
HTTP/1.1 200 OK
Date: Wed, 25 May 2022 14:37:36 GMT
Server: Apache/2.4.52 (Debian)
Set-Cookie: PHPSESSID=h94d0r5568vsbig97u6bs7hlf3; path=/
Expires: Thu, 19 Nov 1981 08:52:00 GMT
Cache-Control: no-store, no-cache, must-revalidate, post-check=0, pre-check=0
Pragma: no-cache
Set-Cookie: Cookie51=DIES_IST_COOKIE_51; expires=Wed, 25-May-2022 15:37:37 GMT; Max-Age=3600
Vary: Accept-Encoding
Content-Length: 224
Content-Type: text/html; charset=UTF-8


<form method="POST" action="./form1.php">
<input type="password" name="password1"></input>
<input type="submit"></input>
</form>

h94d0r5568vsbig97u6bs7hlf3<br>
HALLO_HIER_PASSWORT_51<br>
HALLO_DIES_IST_COOKIE_51a<br>
<br>

Connection closed by foreign host.
david@intel-compute-stick:/var/www/html/051\$

051/output02.txt
75<br>
30<br>
69<br>
111<br>
123<br>
42<br>
74<br>
115<br>
45<br>
53<br>
114<br>
49<br>
43<br>
100<br>
47<br>
85<br>
89<br>
101<br>
57<br>
96<br>
35<br>
103<br>
40<br>
62<br>
5<br>
54<br>
120<br>
22<br>
91<br>
70<br>
112<br>
58<br>
46<br>
16<br>
<br><br>

75<br>
30<br>
69<br>
111<br>
123<br>
42<br>
74<br>
115<br>
45<br>
53<br>
114<br>
49<br>
43<br>
100<br>
47<br>
85<br>
89<br>
101<br>
57<br>
63<br>
121<br>
38<br>
4<br>
12<br>
102<br>
110<br>
104<br>
80<br>
120<br>
54<br>
27<br>
32<br>
86<br>
62<br>
107<br>
<br><br>

96<br>
35<br>
103<br>
40<br>
62<br>
100<br>
5<br>
54<br>
45<br>
120<br>
22<br>
91<br>
75<br>
70<br>
112<br>
58<br>
46<br>
16<br>
63<br>
121<br>
57<br>
38<br>
4<br>
12<br>
102<br>
110<br>
101<br>
69<br>
104<br>
80<br>
27<br>
32<br>
86<br>
107<br>
<br><br>

75<br>
45<br>
100<br>
<br><br>

75<br>
69<br>
101<br>
57<br>
<br><br>

62<br>
54<br>
120<br>
75<br>
<br><br>

54<br>
57<br>
62<br>
69<br>
75<br>
101<br>
120<br>
<br><br>

30<br>
42<br>
43<br>
45<br>
47<br>
49<br>
53<br>
57<br>
69<br>
74<br>
75<br>
85<br>
89<br>
100<br>
101<br>
111<br>
114<br>
115<br>
123<br>
<br><br>

45<br>
54<br>
62<br>
75<br>
100<br>
120<br>
<br><br>

45<br>
54<br>
62<br>
75<br>
100<br>
120<br>
<br><br>

<br><br>

45<br>
57<br>
69<br>
75<br>
100<br>
101<br>
<br><br>


051/output03.txt
<?php
include ('/home/david/mysqldata.php');

\$handle = mysql_connect ("localhost", \$MYSQL_NAME, \$MYSQL_PASSWORD);

mysql_query ("CREATE DATABASE quantity051", \$handle);

mysql_select_db ("quantity051", \$handle);

mysql_query ("CREATE TABLE a (x INTEGER)", \$handle);
mysql_query ("CREATE TABLE b (x INTEGER)", \$handle);
mysql_query ("CREATE TABLE c (x INTEGER)", \$handle);

for (\$i = 0;  \$i < 20;  \$i++) {
    mysql_query ("INSERT INTO a VALUES ("" . rand () % 128 . "")", \$handle);
    mysql_query ("INSERT INTO b VALUES ("" . rand () % 128 . "")", \$handle);
    mysql_query ("INSERT INTO c VALUES ("" . rand () % 128 . "")", \$handle);
}

/*
a OR b
a OR c
b OR c
*/

\$result = mysql_query ("SELECT x FROM (SELECT x FROM a UNION SELECT x FROM b) x", \$handle);
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br><br>nn";
\$result = mysql_query ("SELECT x FROM (SELECT x FROM a UNION SELECT x FROM c) x", \$handle);
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br><br>nn";
\$result = mysql_query ("SELECT x FROM (SELECT x FROM b UNION SELECT x FROM c) x", \$handle);
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br><br>nn";

/*
a AND b
a AND c
b AND c
*/

\$result = mysql_query ("SELECT x FROM (SELECT x FROM a INTERSECT SELECT x FROM b) x", \$handle);
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br><br>nn";
\$result = mysql_query ("SELECT x FROM (SELECT x FROM a INTERSECT SELECT x FROM c) x", \$handle);
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br><br>nn";
\$result = mysql_query ("SELECT x FROM (SELECT x FROM b INTERSECT SELECT x FROM c) x", \$handle);
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br><br>nn";

/*
(a OR b) AND c = a AND c OR b AND c
*/
\$result = mysql_query ("SELECT x FROM (
    SELECT x FROM (SELECT x FROM a INTERSECT SELECT x FROM c) x
    UNION
    SELECT x FROM (SELECT x FROM b INTERSECT SELECT x FROM c) x
) x ORDER BY x", \$handle);
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br><br>nn";

\$result = mysql_query ("SELECT x FROM (
    SELECT x FROM (SELECT x FROM a UNION SELECT x FROM b) x
    INTERSECT
    SELECT x FROM a
) x ORDER BY x", \$handle);
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br><br>nn";

/*
(a OR c) AND b = a AND b OR c AND b
*/
\$result = mysql_query ("SELECT x FROM (
    SELECT x FROM (SELECT x FROM a UNION SELECT x FROM c) x
    INTERSECT
    SELECT x FROM b
) x ORDER BY x", \$handle);
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br><br>nn";

\$result = mysql_query ("SELECT x FROM (
    SELECT x FROM (SELECT x FROM a INTERSECT SELECT x FROM b) x
    UNION
    SELECT x FROM (SELECT x FROM c INTERSECT SELECT x FROM b) x
) x ORDER BY x", \$handle);
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br><br>nn";

/*
(b OR c) AND a = b AND a OR c AND a
*/
\$result = mysql_query ("SELECT x FROM (
    SELECT x FROM (SELECT FROM b INTERSECT SELECT x FROM a) x
    UNION
    SELECT x FROM (SELECT FROM c INTERSECT SELECT x FROM a) x
) x ORDER BY x", \$handle);
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br><br>nn";

\$result = mysql_query ("SELECT x FROM (
    SELECT x FROM (SELECT x FROM b UNION SELECT x FROM c) x
    INTERSECT
    SELECT x FROM a
) x ORDER BY x", \$handle);
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br><br>nn";

mysql_close (\$handle);
?>

051/quantity051.php
<?php
include ('/home/david/mysqldata.php');

\$handle = mysql_connect ("localhost", \$MYSQL_NAME, \$MYSQL_PASSWORD);

mysql_query ("USE test052", \$handle);

\$result = mysql_query ("SELECT * FROM abc INNER JOIN def ON abc.name1 = def.name3", \$handle);
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["name1"] . " " . \$row ["name2"] . " " . \$row ["name3"] . " " . \$row ["name4"] . "<br>n";

\$result = mysql_query ("SELECT * FROM abc RIGHT JOIN def ON abc.name2 = def.name4", \$handle);
while (\$row = mysql_fetch_row (\$result))
    echo \$row [0] . " " . \$row [1] . " " . \$row [2] . " " . \$row [3] . "<br>n";

mysql_close (\$handle);
?>
052/database.php
<?php
session_id ();
?>

<form method="POST" action="./form1.php">
<input type="text" name="text1"></input>
<input type="submit"></input>
</form>

<?php
echo session_id () . "<br>n";

setcookie ("Cookie52", "THIS_IS_COOKIE_52", time () + 3600);

echo htmlentities (\$_COOKIE ["Cookie52"]) . "<br>n";
echo htmlentities (\$_COOKIE ["Cookie52a"]) . "<br>n";
echo htmlentities (\$_POST ["text1"]) . "<br>n";

session_destroy ();
?>
052/form1.php
POST /052/form1.php HTTP/1.1
host: localhost
Cookie: Cookie52a=THIS_IS_COOKIE_52a
Content-Type: application/x-www-form-urlencoded
Content-Length: 20

text1=THIS_IS_TEXT52
052/httprequest01.txt
david@intel-compute-stick:~\$ mysql -u root -p
Enter password:
Welcome to the MariaDB monitor.  Commands end with ; or g.
Your MariaDB connection id is 406
Server version: 10.5.12-MariaDB-0+deb11u1 Debian 11

Copyright (c) 2000, 2018, Oracle, MariaDB Corporation Ab and others.

Type 'help;' or 'h' for help. Type 'c' to clear the current input statement.

MariaDB [(none)]> SHOW DATABASES;
+--------------------+
| Database           |
+--------------------+
| information_schema |
| menge001           |
| menge002           |
| menge003           |
| menge004           |
| menge006           |
| menge007           |
| menge008           |
| mysoc1             |
| mysocial_database  |
| mysql              |
| mytest             |
| performance_schema |
| quantity001        |
| quantity002        |
| quantity003        |
| quantity004        |
| quantity007        |
| quantity008        |
| quantity035        |
| quantity035a       |
| quantity036        |
| quantity037        |
| quantity038        |
| quantity038a       |
| quantity039        |
| quantity040        |
| quantity041        |
| quantity043        |
| quantity044        |
| quantity045        |
| quantity047        |
| quantity048        |
| quantity049        |
| quantity051        |
| quantity30         |
| quantity31         |
| quantity50         |
| taadsasda          |
| test001            |
| test002            |
| test003            |
| test004            |
| test005            |
| test006            |
| test007            |
| test008            |
| test009            |
| test010            |
| test011            |
| test012            |
| test013            |
| test014            |
| test015            |
| test016            |
| test019            |
| test020            |
| test021            |
| test022            |
| test023            |
| test024            |
| test025            |
| test026            |
| test027            |
| test028            |
| test030            |
| test031            |
| test032            |
| test033            |
| test034            |
| test035            |
| test036            |
| test037            |
| test038            |
| test039            |
| test040            |
| test041            |
| test042            |
| test043            |
| test044            |
| test045            |
| test046            |
| test047            |
| test048            |
| test049            |
| test050            |
| test051            |
+--------------------+
87 rows in set (0.033 sec)

MariaDB [(none)]> CREATE DATABASE test052;
Query OK, 1 row affected (0.002 sec)

MariaDB [(none)]> USE test052;
Database changed
MariaDB [test052]> CREATE TABLE abc (name1 VARCHAR (32), name2 VARCHAR (32));
Query OK, 0 rows affected (0.058 sec)

MariaDB [test052]> CREATE TABLE def (name3 VARCHAR (32), name4 VARCHAR (32));
Query OK, 0 rows affected (0.051 sec)

MariaDB [test052]> INSERT INTO abc VALUES ("001", "001");
Query OK, 1 row affected (0.025 sec)

MariaDB [test052]> INSERT INTO abc VALUES ("001", "002");
Query OK, 1 row affected (0.031 sec)

MariaDB [test052]> INSERT INTO abc VALUES ("002", "001");
Query OK, 1 row affected (0.026 sec)

MariaDB [test052]> INSERT INTO abc VALUES ("002", "002");
Query OK, 1 row affected (0.029 sec)

MariaDB [test052]> INSERT INTO def VALUES ("001", "001");
Query OK, 1 row affected (0.030 sec)

MariaDB [test052]> INSERT INTO def VALUES ("001", "002");
Query OK, 1 row affected (0.027 sec)

MariaDB [test052]> INSERT INTO def VALUES ("002", "001");
Query OK, 1 row affected (0.028 sec)

MariaDB [test052]> SELECT * FROM abc;
+-------+-------+
| name1 | name2 |
+-------+-------+
| 001   | 001   |
| 001   | 002   |
| 002   | 001   |
| 002   | 002   |
+-------+-------+
4 rows in set (0.001 sec)

MariaDB [test052]> SELECT * FROM def;
+-------+-------+
| name3 | name4 |
+-------+-------+
| 001   | 001   |
| 001   | 002   |
| 002   | 001   |
+-------+-------+
3 rows in set (0.001 sec)

MariaDB [test052]> SELECT * FROM abc INNER JOIN def ON abc.name1 = def.name3;
+-------+-------+-------+-------+
| name1 | name2 | name3 | name4 |
+-------+-------+-------+-------+
| 001   | 001   | 001   | 001   |
| 001   | 001   | 001   | 002   |
| 001   | 002   | 001   | 001   |
| 001   | 002   | 001   | 002   |
| 002   | 001   | 002   | 001   |
| 002   | 002   | 002   | 001   |
+-------+-------+-------+-------+
6 rows in set (0.002 sec)

MariaDB [test052]> SELECT * FROM abc JOIN def;
+-------+-------+-------+-------+
| name1 | name2 | name3 | name4 |
+-------+-------+-------+-------+
| 001   | 001   | 001   | 001   |
| 001   | 001   | 001   | 002   |
| 001   | 001   | 002   | 001   |
| 001   | 002   | 001   | 001   |
| 001   | 002   | 001   | 002   |
| 001   | 002   | 002   | 001   |
| 002   | 001   | 001   | 001   |
| 002   | 001   | 001   | 002   |
| 002   | 001   | 002   | 001   |
| 002   | 002   | 001   | 001   |
| 002   | 002   | 001   | 002   |
| 002   | 002   | 002   | 001   |
+-------+-------+-------+-------+
12 rows in set (0.002 sec)

MariaDB [test052]> SELECT * FROM abc RIGHT JOIN def ON abc.name1 = def.name3;
+-------+-------+-------+-------+
| name1 | name2 | name3 | name4 |
+-------+-------+-------+-------+
| 001   | 001   | 001   | 001   |
| 001   | 001   | 001   | 002   |
| 001   | 002   | 001   | 001   |
| 001   | 002   | 001   | 002   |
| 002   | 001   | 002   | 001   |
| 002   | 002   | 002   | 001   |
+-------+-------+-------+-------+
6 rows in set (0.002 sec)

MariaDB [test052]> SELECT * FROM abc LEFT JOIN def ON abc.name2 = def.name4;
+-------+-------+-------+-------+
| name1 | name2 | name3 | name4 |
+-------+-------+-------+-------+
| 001   | 001   | 001   | 001   |
| 002   | 001   | 001   | 001   |
| 001   | 002   | 001   | 002   |
| 002   | 002   | 001   | 002   |
| 001   | 001   | 002   | 001   |
| 002   | 001   | 002   | 001   |
+-------+-------+-------+-------+
6 rows in set (0.002 sec)

MariaDB [test052]> QUIT
Bye
david@intel-compute-stick:~\$

052/output01.txt
001 001 001 001<br>
001 001 001 002<br>
001 002 001 001<br>
001 002 001 002<br>
002 001 002 001<br>
002 002 002 001<br>
001 001 001 001<br>
001 001 002 001<br>
001 002 001 002<br>
002 001 001 001<br>
002 001 002 001<br>
002 002 001 002<br>
052/output02.txt
david@intel-compute-stick:/var/www/html/052\$ telnet localhost 80
Trying ::1...
Connected to localhost.
Escape character is '\^]'.
POST /052/form1.php HTTP/1.1
host: localhost
Cookie: Cookie52a=THIS_IS_COOKIE_52a
Content-Type: application/x-www-form-urlencoded
Content-Length: 20

text1=THIS_IS_TEXT52
HTTP/1.1 200 OK
Date: Thu, 26 May 2022 17:25:42 GMT
Server: Apache/2.4.52 (Debian)
Set-Cookie: Cookie52=THIS_IS_COOKIE_52; expires=Thu, 26-May-2022 18:25:42 GMT; Max-Age=3600
Vary: Accept-Encoding
Content-Length: 175
Content-Type: text/html; charset=UTF-8


<form method="POST" action="./form1.php">
<input type="text" name="text1"></input>
<input type="submit"></input>
</form>

<br>
<br>
THIS_IS_COOKIE_52a<br>
THIS_IS_TEXT52<br>


Connection closed by foreign host.
david@intel-compute-stick:/var/www/html/052\$

052/output03.txt
81<br>
42<br>
90<br>
50<br>
69<br>
47<br>
71<br>
74<br>
120<br>
126<br>
73<br>
114<br>
58<br>
10<br>
103<br>
12<br>
115<br>
98<br>
30<br>
75<br>
20<br>
4<br>
31<br>
63<br>
24<br>
26<br>
14<br>
40<br>
57<br>
36<br>
62<br>
49<br>
54<br>
38<br>
45<br>
56<br>
48<br>
46<br>
<br><br>

81<br>
42<br>
90<br>
50<br>
69<br>
47<br>
71<br>
74<br>
120<br>
126<br>
73<br>
114<br>
58<br>
10<br>
103<br>
12<br>
115<br>
98<br>
30<br>
75<br>
41<br>
72<br>
80<br>
93<br>
37<br>
111<br>
59<br>
45<br>
89<br>
60<br>
123<br>
83<br>
15<br>
99<br>
<br><br>

20<br>
4<br>
31<br>
63<br>
24<br>
26<br>
14<br>
40<br>
57<br>
36<br>
62<br>
49<br>
54<br>
38<br>
45<br>
56<br>
48<br>
46<br>
41<br>
72<br>
80<br>
93<br>
37<br>
103<br>
111<br>
59<br>
69<br>
89<br>
60<br>
123<br>
83<br>
15<br>
99<br>
12<br>
<br><br>

<br><br>

69<br>
103<br>
12<br>
<br><br>

45<br>
<br><br>

103<br>
12<br>
45<br>
69<br>
<br><br>

103<br>
12<br>
45<br>
69<br>
<br><br>

45<br>
<br><br>

45<br>
<br><br>

103<br>
12<br>
69<br>
<br><br>

103<br>
12<br>
69<br>
<br><br>

052/output04.txt
<?php
include ('/home/david/mysqldata.php');

\$handle = mysql_connect ("localhost", \$MYSQL_NAME, \$MYSQL_PASSWORD);

mysql_query ("CREATE DATABASE quantity052", \$handle);

mysql_select_db ("quantity052", \$handle);

mysql_query ("CREATE TABLE a (x VARCHAR (4))", \$handle);
mysql_query ("CREATE TABLE b (x VARCHAR (4))", \$handle);
mysql_query ("CREATE TABLE c (x VARCHAR (4))", \$handle);

for (\$i = 0;  \$i < 20;  \$i++) {
    mysql_query ("INSERT INTO a VALUES ("" . rand () % 128 . "")", \$handle);
    mysql_query ("INSERT INTO b VALUES ("" . rand () % 64 . "")", \$handle);
    mysql_query ("INSERT INTO c VALUES ("" . rand () % 128 . "")", \$handle);
}

/*
a OR b
a OR c
b OR c
*/

\$result = mysql_query ("SELECT x FROM (SELECT x FROM a UNION SELECT x FROM b) x", \$handle);
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br><br>nn";
\$result = mysql_query ("SELECT x FROM (SELECT x FROM a UNION SELECT x FROM c) x", \$handle);
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br><br>nn";
\$result = mysql_query ("SELECT x FROM (SELECT x FROM b UNION SELECT x FROM c) x", \$handle);
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br><br>nn";

/*
a AND b
a AND c
b AND c
*/

\$result = mysql_query ("SELECT x FROM (SELECT x FROM a INTERSECT SELECT x FROM b) x", \$handle);
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br><br>nn";
\$result = mysql_query ("SELECT x FROM (SELECT x FROM a INTERSECT SELECT x FROM c) x", \$handle);
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br><br>nn";
\$result = mysql_query ("SELECT x FROM (SELECT x FROM b INTERSECT SELECT x FROM c) x", \$handle);
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br><br>nn";

/*
(a OR b) AND c = a AND c OR b AND c
*/

\$result = mysql_query ("SELECT x FROM (
    SELECT x FROM (SELECT x FROM a UNION SELECT x FROM b) x
    INTERSECT
    SELECT x FROM c
) x ORDER BY x", \$handle);
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br><br>nn";


\$result = mysql_query ("SELECT x FROM (
    SELECT x FROM (SELECT x FROM a INTERSECT SELECT x FROM c) x
    UNION
    SELECT x FROM (SELECT x FROM b INTERSECT SELECT x FROM c) x
) x ORDER BY x", \$handle);
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br><br>nn";

/*
(a OR c) AND b = a AND b OR c AND b
*/

\$result = mysql_query ("SELECT x FROM (
    SELECT x FROM (SELECT x FROM a INTERSECT SELECT x FROM b) x
    UNION
    SELECT x FROM (SELECT x FROM c INTERSECT SELECT x FROM b) x
) x ORDER BY x", \$handle);
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br><br>nn";

\$result = mysql_query ("SELECT x FROM (
    SELECT x FROM (SELECT x FROM a UNION SELECT x FROM c) x
    INTERSECT
    SELECT x FROM b
) x ORDER BY x", \$handle);
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br><br>nn";

/*
(b OR c) AND a = b AND a OR c AND a
*/

\$result = mysql_query ("SELECT x FROM (
    SELECT x FROM (SELECT x FROM b UNION SELECT x FROM c) x
    INTERSECT
    SELECT x FROM a
) x ORDER BY x", \$handle);
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br><br>nn";

\$result = mysql_query ("SELECT x FROM (
    SELECT x FROM (SELECT x FROM b INTERSECT SELECT x FROM a) x
    UNION
    SELECT x FROM (SELECT x FROM c INTERSECT SELECT x FROM a) x
) x ORDER BY x", \$handle);
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br><br>nn";

mysql_close (\$handle);
?>
052/quantity.php
<?php
include ('/home/david/mysqldata.php');

\$handle = mysql_connect ("localhost", \$MYSQL_NAME, \$MYSQL_PASSWORD);

mysql_select_db ("test053", \$handle);

mysql_query ("INSERT INTO def VALUES ("002", "002"", \$handle);

\$result = mysql_query ("SELECT * FROM abc INNER JOIN def ON abc.name1 = def.name3", \$handle);
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["name1"] . " " . \$row ["name2"] . " " . \$row ["name3"] . " " . \$row ["name4"] . "<br>n";

\$result = mysql_query ("SELECT * FROM abc LEFT JOIN def ON abc.name2 = def.name4", \$handle);
while (\$row = mysql_fetch_row (\$result))
    echo \$row [0] . " " . \$row [1] . " " . \$row [2] . " " . \$row [3] . "<br>n";

mysql_close (\$handle);
?>
053/database.php
<?php
session_start ();
?>

<form method="POST" action="./form1.php">
<input type="text" name="text1"></input>
<input type="submit"></input>
</form>

<?php

setcookie ("Cookie53", "THIS_IS_COOKIE_53", time () + 3600);

echo session_id () . "<br>n";
echo htmlentities (\$_COOKIE ["Cookie53"]) . "<br>n";
echo htmlentities (\$_COOKIE ["Cookie53a"]) . "<br>n";
echo htmlentities (\$_POST ["text1"]) . "<br>n";

session_destroy ()
?>
053/form1.php
POST /053/form1.php HTTP/1.1
host: localhost
Cookie: Cookie53a=<br>Hallo, Cookie 53a<br>
Content-Length: 20
Content-Type: application/x-www-form-urlencoded

text1=<br>Text53<br>
053/httprequest01.txt
david@intel-compute-stick:~\$ mysql -u root -p
Enter password:
Welcome to the MariaDB monitor.  Commands end with ; or g.
Your MariaDB connection id is 436
Server version: 10.5.12-MariaDB-0+deb11u1 Debian 11

Copyright (c) 2000, 2018, Oracle, MariaDB Corporation Ab and others.

Type 'help;' or 'h' for help. Type 'c' to clear the current input statement.

MariaDB [(none)]> SHOW DATABASES;
+--------------------+
| Database           |
+--------------------+
| information_schema |
| menge001           |
| menge002           |
| menge003           |
| menge004           |
| menge006           |
| menge007           |
| menge008           |
| mysoc1             |
| mysocial_database  |
| mysql              |
| mytest             |
| performance_schema |
| quantity001        |
| quantity002        |
| quantity003        |
| quantity004        |
| quantity007        |
| quantity008        |
| quantity035        |
| quantity035a       |
| quantity036        |
| quantity037        |
| quantity038        |
| quantity038a       |
| quantity039        |
| quantity040        |
| quantity041        |
| quantity043        |
| quantity044        |
| quantity045        |
| quantity047        |
| quantity048        |
| quantity049        |
| quantity051        |
| quantity052        |
| quantity30         |
| quantity31         |
| quantity50         |
| taadsasda          |
| test001            |
| test002            |
| test003            |
| test004            |
| test005            |
| test006            |
| test007            |
| test008            |
| test009            |
| test010            |
| test011            |
| test012            |
| test013            |
| test014            |
| test015            |
| test016            |
| test019            |
| test020            |
| test021            |
| test022            |
| test023            |
| test024            |
| test025            |
| test026            |
| test027            |
| test028            |
| test030            |
| test031            |
| test032            |
| test033            |
| test034            |
| test035            |
| test036            |
| test037            |
| test038            |
| test039            |
| test040            |
| test041            |
| test042            |
| test043            |
| test044            |
| test045            |
| test046            |
| test047            |
| test048            |
| test049            |
| test050            |
| test051            |
| test052            |
+--------------------+
89 rows in set (0.044 sec)

MariaDB [(none)]> CREATE DATABASE test053;
Query OK, 1 row affected (0.002 sec)

MariaDB [(none)]> USE test053;
Database changed
MariaDB [test053]> CREATE TABLE abc (name1 VARCHAR (32), name2 VARCHAR (32));
Query OK, 0 rows affected (0.059 sec)

MariaDB [test053]> INSERT INTO abc VALUES ("001", "001");
Query OK, 1 row affected (0.030 sec)

MariaDB [test053]> INSERT INTO abc VALUES ("001", "002");
Query OK, 1 row affected (0.033 sec)

MariaDB [test053]> INSERT INTO abc VALUES ("002", "001");
Query OK, 1 row affected (0.031 sec)

MariaDB [test053]> INSERT INTO abc (name1, name2) VALUES ("002", "002");
Query OK, 1 row affected (0.025 sec)

MariaDB [test053]> CREATE TABLE def (name3 VARCHAR (32), name4 VARCHAR (32));
Query OK, 0 rows affected (0.059 sec)

MariaDB [test053]> INSERT INTO def VALUES ("001", "001");
Query OK, 1 row affected (0.029 sec)

MariaDB [test053]> INSERT INTO def (name4, name3) VALUES ("002", "001");
Query OK, 1 row affected (0.028 sec)

MariaDB [test053]> INSERT INTO def VALUES ("abc", "def");
Query OK, 1 row affected (0.025 sec)

MariaDB [test053]> SELECT * FROM abc;
+-------+-------+
| name1 | name2 |
+-------+-------+
| 001   | 001   |
| 001   | 002   |
| 002   | 001   |
| 002   | 002   |
+-------+-------+
4 rows in set (0.001 sec)

MariaDB [test053]> SELECT * FROM def;
+-------+-------+
| name3 | name4 |
+-------+-------+
| 001   | 001   |
| 001   | 002   |
| abc   | def   |
+-------+-------+
3 rows in set (0.001 sec)

MariaDB [test053]> SELECT * FROM abc JOIN def;
+-------+-------+-------+-------+
| name1 | name2 | name3 | name4 |
+-------+-------+-------+-------+
| 001   | 001   | 001   | 001   |
| 001   | 001   | 001   | 002   |
| 001   | 001   | abc   | def   |
| 001   | 002   | 001   | 001   |
| 001   | 002   | 001   | 002   |
| 001   | 002   | abc   | def   |
| 002   | 001   | 001   | 001   |
| 002   | 001   | 001   | 002   |
| 002   | 001   | abc   | def   |
| 002   | 002   | 001   | 001   |
| 002   | 002   | 001   | 002   |
| 002   | 002   | abc   | def   |
+-------+-------+-------+-------+
12 rows in set (0.001 sec)

MariaDB [test053]> SELECT * FROM abc INNER JOIN def ON abc.name1 = def.name3;
+-------+-------+-------+-------+
| name1 | name2 | name3 | name4 |
+-------+-------+-------+-------+
| 001   | 001   | 001   | 001   |
| 001   | 001   | 001   | 002   |
| 001   | 002   | 001   | 001   |
| 001   | 002   | 001   | 002   |
+-------+-------+-------+-------+
4 rows in set (0.002 sec)

MariaDB [test053]> SELECT * FROM abc RIGHT JOIN def ON abc.name2 = def.name4;
+-------+-------+-------+-------+
| name1 | name2 | name3 | name4 |
+-------+-------+-------+-------+
| 001   | 001   | 001   | 001   |
| 001   | 002   | 001   | 002   |
| 002   | 001   | 001   | 001   |
| 002   | 002   | 001   | 002   |
| NULL  | NULL  | abc   | def   |
+-------+-------+-------+-------+
5 rows in set (0.002 sec)

MariaDB [test053]> SELECT * FROM abc LEFT JOIN def ON abc.name1 = def.name3;
+-------+-------+-------+-------+
| name1 | name2 | name3 | name4 |
+-------+-------+-------+-------+
| 001   | 001   | 001   | 001   |
| 001   | 002   | 001   | 001   |
| 001   | 001   | 001   | 002   |
| 001   | 002   | 001   | 002   |
| 002   | 001   | NULL  | NULL  |
| 002   | 002   | NULL  | NULL  |
+-------+-------+-------+-------+
6 rows in set (0.002 sec)

MariaDB [test053]> QUIT
Bye
david@intel-compute-stick:~\$

053/output01.txt
001 001 001 001<br>
001 001 001 002<br>
001 002 001 001<br>
001 002 001 002<br>
001 001 001 001<br>
002 001 001 001<br>
001 002 001 002<br>
002 002 001 002<br>
053/output02.txt
david@intel-compute-stick:~\$ cd /var/www/html/053
david@intel-compute-stick:/var/www/html/053\$ php database.php > output02.txt
david@intel-compute-stick:/var/www/html/053\$ telnet 127.0.0.1 80
Trying 127.0.0.1...
Connected to 127.0.0.1.
Escape character is '\^]'.
POST /053/form1.php HTTP/1.1
host: localhost
Cookie: Cookie53a=<br>Hallo, Cookie 53a<br>
Content-Length: 20
Content-Type: application/x-www-form-urlencoded

text1=<br>Text53<br>
HTTP/1.1 200 OK
Date: Fri, 27 May 2022 14:19:31 GMT
Server: Apache/2.4.52 (Debian)
Set-Cookie: PHPSESSID=i5pmafv6t77721r4dk8halslp0; path=/
Expires: Thu, 19 Nov 1981 08:52:00 GMT
Cache-Control: no-store, no-cache, must-revalidate, post-check=0, pre-check=0
Pragma: no-cache
Set-Cookie: Cookie53=THIS_IS_COOKIE_53; expires=Fri, 27-May-2022 15:19:33 GMT; Max-Age=3599
Vary: Accept-Encoding
Content-Length: 232
Content-Type: text/html; charset=UTF-8


<form method="POST" action="./form1.php">
<input type="text" name="text1"></input>
<input type="submit"></input>
</form>

i5pmafv6t77721r4dk8halslp0<br>
<br>
\&amp;lt;br\&amp;gt;Hallo, Cookie 53a\&amp;lt;br\&amp;gt;<br>
\&amp;lt;br\&amp;gt;Text53\&amp;lt;br\&amp;gt;<br>

Connection closed by foreign host.
david@intel-compute-stick:/var/www/html/053\$

053/output03.txt
29<br>
28<br>
13<br>
18<br>
3<br>
6<br>
9<br>
2<br>
25<br>
22<br>
17<br>
16<br>
8<br>
4<br>
7<br>
10<br>
15<br>
24<br>
19<br>
23<br>
0<br>
<br><br>

17<br>
10<br>
18<br>
4<br>
25<br>
29<br>
13<br>
3<br>
15<br>
24<br>
22<br>
19<br>
16<br>
23<br>
0<br>
2<br>
27<br>
31<br>
30<br>
26<br>
11<br>
28<br>
20<br>
21<br>
14<br>
12<br>
<br><br>

29<br>
28<br>
13<br>
18<br>
3<br>
6<br>
9<br>
2<br>
25<br>
22<br>
17<br>
16<br>
8<br>
4<br>
7<br>
27<br>
31<br>
30<br>
26<br>
11<br>
20<br>
21<br>
14<br>
12<br>
<br><br>

29<br>
13<br>
18<br>
3<br>
2<br>
25<br>
22<br>
17<br>
16<br>
4<br>
<br><br>

29<br>
28<br>
18<br>
3<br>
2<br>
25<br>
16<br>
4<br>
<br><br>

18<br>
4<br>
25<br>
29<br>
3<br>
16<br>
2<br>
<br><br>

2<br>
3<br>
4<br>
16<br>
18<br>
25<br>
28<br>
29<br>
<br><br>

2<br>
3<br>
4<br>
16<br>
18<br>
25<br>
28<br>
29<br>
<br><br>

2<br>
3<br>
4<br>
13<br>
16<br>
17<br>
18<br>
22<br>
25<br>
29<br>
<br><br>

2<br>
3<br>
4<br>
13<br>
16<br>
17<br>
18<br>
22<br>
25<br>
29<br>
<br><br>

2<br>
3<br>
4<br>
13<br>
16<br>
17<br>
18<br>
22<br>
25<br>
28<br>
29<br>
<br><br>

2<br>
3<br>
4<br>
13<br>
16<br>
17<br>
18<br>
22<br>
25<br>
28<br>
29<br>
<br><br>

053/output04.txt
<?php
include ('/home/david/mysqldata.php');

\$handle = mysql_connect ("localhost", \$MYSQL_NAME, \$MYSQL_PASSWORD);

mysql_query ("CREATE DATABASE quantity53", \$handle);

mysql_select_db ("quantity53", \$handle);

mysql_query ("CREATE TABLE a (x INTEGER)", \$handle);
mysql_query ("CREATE TABLE b (x INTEGER)", \$handle);
mysql_query ("CREATE TABLE c (x INTEGER)", \$handle);

for (\$i = 0;  \$i < 20;  \$i++) {
    mysql_query ("INSERT INTO a VALUES ("" . rand () % 32 . "")", \$handle);
    mysql_query ("INSERT INTO b VALUES ("" . rand () % 32 . "")", \$handle);
    mysql_query ("INSERT INTO c VALUES ("" . rand () % 32 . "")", \$handle);
}

/*
a OR b
b OR c
a OR c
*/

\$result = mysql_query ("SELECT x FROM (SELECT x FROM a UNION SELECT x FROM b) x", \$handle);
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br><br>nn";
\$result = mysql_query ("SELECT x FROM (SELECT x FROM b UNION SELECT x FROM c) x", \$handle);
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br><br>nn";
\$result = mysql_query ("SELECT x FROM (SELECT x FROM a UNION SELECT x FROM c) x", \$handle);
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br><br>nn";

/*
a AND b
a AND c
b AND c
*/

\$result = mysql_query ("SELECT x FROM (SELECT x FROM a INTERSECT SELECT x FROM b) x", \$handle);
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br><br>nn";
\$result = mysql_query ("SELECT x FROM (SELECT x FROM a INTERSECT SELECT x FROM c) x", \$handle);
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br><br>nn";
\$result = mysql_query ("SELECT x FROM (SELECT x FROM b INTERSECT SELECT x FROM c) x", \$handle);
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br><br>nn";

/* (a OR b) AND c = a AND c OR b AND c */
\$result = mysql_query ("SELECT x FROM (
    SELECT x FROM (SELECT x FROM a UNION SELECT x FROM b) x
    INTERSECT
    SELECT x FROM c
) x ORDER BY x", \$handle);
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br><br>nn";

\$result = mysql_query ("SELECT x FROM (
    SELECT x FROM (SELECT x FROM a INTERSECT SELECT x FROM c) x
    UNION
    SELECT x FROM (SELECT x FROM b INTERSECT SELECT x FROM c) x
) x ORDER BY x", \$handle);
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br><br>nn";
/* (a OR c) AND b = a AND b OR c AND b */
\$result = mysql_query ("SELECT x FROM (
    SELECT x FROM (SELECT x FROM a UNION SELECT x FROM c) x
    INTERSECT
    SELECT x FROM b
) x ORDER BY x", \$handle);
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br><br>nn";


\$result = mysql_query ("SELECT x FROM (
    SELECT x FROM (SELECT x FROM a INTERSECT SELECT x FROM b) x
    UNION
    SELECT x FROM (SELECT x FROM c INTERSECT SELECT x FROM b) x
) x ORDER BY x", \$handle);
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br><br>nn";
/* (b OR c) AND a = b AND a OR c AND a */
\$result = mysql_query ("SELECT x FROM (
    SELECT x FROM (SELECT x FROM b UNION SELECT x FROM c) x
    INTERSECT
    SELECT x FROM a
) x ORDER BY x", \$handle);
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br><br>nn";


\$result = mysql_query ("SELECT x FROM (
    SELECT x FROM (SELECT x FROM b INTERSECT SELECT x FROM a) x
    UNION
    SELECT x FROM (SELECT x FROM c INTERSECT SELECT x FROM a) x
) x ORDER BY x", \$handle);
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br><br>nn";

mysql_close (\$handle);
?>
053/quantity.php
<?php
include ('/home/david/mysqldata.php');

\$handle = mysql_connect ("127.0.0.1", \$MYSQL_NAME, \$MYSQL_PASSWORD);

mysql_select_db ("test054", \$handle);

mysql_query ("INSERT INTO def VALUES ("001", "002")", \$handle);

\$result = mysql_query ("SELECT * FROM abc INNER JOIN def ON abc.name1 = def.name3", \$handle);

while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["name1"] . " " . \$row ["name2"] . " " . \$row ["name3"] . " " . \$row ["name4"] . "<br>n";

mysql_close (\$handle);
?>
054/database.php
<?php
session_start ();
?>

<form method="POST" action="./form1.php">
<input type="password" name="password1"></input>
<input type="submit"></input>
</form>

<?php

echo session_id ()  . "<br>n";

setcookie ("Cookie54", "THIS_IS_COOKIE54", time () + 2400);

echo htmlentities (\$_COOKIE ["Cookie54"]) . "<br>n";
echo htmlentities (\$_COOKIE ["Cookie54a"]) . "<br>n";
echo htmlentities (\$_POST ["password1"]) . "<br>n";


?>
054/form1.php
POST /054/form1.php HTTP/1.1
host: localhost
Cookie: Cookie54a=DIES_IST_COOKIE54a
Content-Type: application/x-www-form-urlencoded
Content-Length: 20

password1=PASSWORD54
054/httprequest01.txt
david@intel-compute-stick:~\$ mysql -u root -p
Enter password:
Welcome to the MariaDB monitor.  Commands end with ; or g.
Your MariaDB connection id is 488
Server version: 10.5.12-MariaDB-0+deb11u1 Debian 11

Copyright (c) 2000, 2018, Oracle, MariaDB Corporation Ab and others.

Type 'help;' or 'h' for help. Type 'c' to clear the current input statement.

MariaDB [(none)]> SHOW DATABASES;
+--------------------+
| Database           |
+--------------------+
| information_schema |
| menge001           |
| menge002           |
| menge003           |
| menge004           |
| menge006           |
| menge007           |
| menge008           |
| mysoc1             |
| mysocial_database  |
| mysql              |
| mytest             |
| performance_schema |
| quantity001        |
| quantity002        |
| quantity003        |
| quantity004        |
| quantity007        |
| quantity008        |
| quantity035        |
| quantity035a       |
| quantity036        |
| quantity037        |
| quantity038        |
| quantity038a       |
| quantity039        |
| quantity040        |
| quantity041        |
| quantity043        |
| quantity044        |
| quantity045        |
| quantity047        |
| quantity048        |
| quantity049        |
| quantity051        |
| quantity052        |
| quantity30         |
| quantity31         |
| quantity50         |
| quantity53         |
| taadsasda          |
| test001            |
| test002            |
| test003            |
| test004            |
| test005            |
| test006            |
| test007            |
| test008            |
| test009            |
| test010            |
| test011            |
| test012            |
| test013            |
| test014            |
| test015            |
| test016            |
| test019            |
| test020            |
| test021            |
| test022            |
| test023            |
| test024            |
| test025            |
| test026            |
| test027            |
| test028            |
| test030            |
| test031            |
| test032            |
| test033            |
| test034            |
| test035            |
| test036            |
| test037            |
| test038            |
| test039            |
| test040            |
| test041            |
| test042            |
| test043            |
| test044            |
| test045            |
| test046            |
| test047            |
| test048            |
| test049            |
| test050            |
| test051            |
| test052            |
| test053            |
+--------------------+
91 rows in set (0.049 sec)

MariaDB [(none)]> CREATE DATABASE test054;
Query OK, 1 row affected (0.002 sec)

MariaDB [(none)]> USE test054;
Database changed
MariaDB [test054]> CREATE TABLE abc (name1 VARCHAR (16), name2 VARCHAR (16));
Query OK, 0 rows affected (0.057 sec)

MariaDB [test054]> CREATE TABLE def (name3 VARCHAR (16), name4 VARCHAR (16));
Query OK, 0 rows affected (0.063 sec)

MariaDB [test054]> INSERT INTO abc VALUES ("001", "001");
Query OK, 1 row affected (0.029 sec)

MariaDB [test054]> INSERT INTO abc (name1, name2) VALUES ("001", "002");
Query OK, 1 row affected (0.032 sec)

MariaDB [test054]> INSERT INTO abc (name2, name1) VALUES ("001", "002");
Query OK, 1 row affected (0.032 sec)

MariaDB [test054]> INSERT INTO abc VALUES ("002", "002");
Query OK, 1 row affected (0.027 sec)

MariaDB [test054]> INSERT INTO def VALUES ("001", "001");
Query OK, 1 row affected (0.032 sec)

MariaDB [test054]> INSERT INTO def VALUES ("002", "002");
Query OK, 1 row affected (0.030 sec)

MariaDB [test054]> INSERT INTO def VALUES ("abc", "def");
Query OK, 1 row affected (0.031 sec)

MariaDB [test054]> SELECT * FROM abc
    -> ;
+-------+-------+
| name1 | name2 |
+-------+-------+
| 001   | 001   |
| 001   | 002   |
| 002   | 001   |
| 002   | 002   |
+-------+-------+
4 rows in set (0.001 sec)

MariaDB [test054]> SELECT * FROM def;
+-------+-------+
| name3 | name4 |
+-------+-------+
| 001   | 001   |
| 002   | 002   |
| abc   | def   |
+-------+-------+
3 rows in set (0.001 sec)

MariaDB [test054]> SELECT * FROM abc JOIN def;
+-------+-------+-------+-------+
| name1 | name2 | name3 | name4 |
+-------+-------+-------+-------+
| 001   | 001   | 001   | 001   |
| 001   | 001   | 002   | 002   |
| 001   | 001   | abc   | def   |
| 001   | 002   | 001   | 001   |
| 001   | 002   | 002   | 002   |
| 001   | 002   | abc   | def   |
| 002   | 001   | 001   | 001   |
| 002   | 001   | 002   | 002   |
| 002   | 001   | abc   | def   |
| 002   | 002   | 001   | 001   |
| 002   | 002   | 002   | 002   |
| 002   | 002   | abc   | def   |
+-------+-------+-------+-------+
12 rows in set (0.001 sec)

MariaDB [test054]> SELECT * FROM abc INNER JOIN def ON abc.name1 = def.name3;
+-------+-------+-------+-------+
| name1 | name2 | name3 | name4 |
+-------+-------+-------+-------+
| 001   | 001   | 001   | 001   |
| 001   | 002   | 001   | 001   |
| 002   | 001   | 002   | 002   |
| 002   | 002   | 002   | 002   |
+-------+-------+-------+-------+
4 rows in set (0.002 sec)

MariaDB [test054]> SELECT * FROM abc LEFT JOIN def ON abc.name1 = def.name3;
+-------+-------+-------+-------+
| name1 | name2 | name3 | name4 |
+-------+-------+-------+-------+
| 001   | 001   | 001   | 001   |
| 001   | 002   | 001   | 001   |
| 002   | 001   | 002   | 002   |
| 002   | 002   | 002   | 002   |
+-------+-------+-------+-------+
4 rows in set (0.002 sec)

MariaDB [test054]> SELECT * FROM abc RIGHT JOIN def ON abc.name2 = def.name4;
+-------+-------+-------+-------+
| name1 | name2 | name3 | name4 |
+-------+-------+-------+-------+
| 001   | 001   | 001   | 001   |
| 001   | 002   | 002   | 002   |
| 002   | 001   | 001   | 001   |
| 002   | 002   | 002   | 002   |
| NULL  | NULL  | abc   | def   |
+-------+-------+-------+-------+
5 rows in set (0.002 sec)

MariaDB [test054]> QUIT
Bye
david@intel-compute-stick:~\$

054/output01.txt
001 001 001 001<br>
001 002 001 001<br>
002 001 002 002<br>
002 002 002 002<br>
001 001 001 002<br>
001 002 001 002<br>
054/output02.txt
david@intel-compute-stick:/var/www/html/054\$ telnet 127.0.0.1 80
Trying 127.0.0.1...
Connected to 127.0.0.1.
Escape character is '\^]'.
POST /054/form1.php HTTP/1.1
host: localhost
Cookie: Cookie54a=DIES_IST_COOKIE54a
Content-Type: application/x-www-form-urlencoded
Content-Length: 20

password1=PASSWORD54
HTTP/1.1 200 OK
Date: Sat, 28 May 2022 15:33:36 GMT
Server: Apache/2.4.52 (Debian)
Set-Cookie: PHPSESSID=r0o5imq5bro2ltp6h2nhsfek40; path=/
Expires: Thu, 19 Nov 1981 08:52:00 GMT
Cache-Control: no-store, no-cache, must-revalidate, post-check=0, pre-check=0
Pragma: no-cache
Set-Cookie: Cookie54=THIS_IS_COOKIE54; expires=Sat, 28-May-2022 16:13:37 GMT; Max-Age=2400
Vary: Accept-Encoding
Content-Length: 205
Content-Type: text/html; charset=UTF-8


<form method="POST" action="./form1.php">
<input type="password" name="password1"></input>
<input type="submit"></input>
</form>

r0o5imq5bro2ltp6h2nhsfek40<br>
<br>
DIES_IST_COOKIE54a<br>
PASSWORD54<br>

Connection closed by foreign host.
david@intel-compute-stick:/var/www/html/054\$

054/output03.txt
79<br>
12<br>
18<br>
13<br>
16<br>
121<br>
82<br>
123<br>
112<br>
23<br>
11<br>
24<br>
88<br>
55<br>
29<br>
27<br>
120<br>
4<br>
45<br>
106<br>
85<br>
10<br>
2<br>
60<br>
46<br>
21<br>
74<br>
80<br>
25<br>
104<br>
116<br>
6<br>
20<br>
36<br>
111<br>
90<br>
114<br>
<br><br>

79<br>
13<br>
11<br>
<br><br>

3<br>
5<br>
11<br>
13<br>
32<br>
41<br>
57<br>
61<br>
64<br>
65<br>
79<br>
91<br>
93<br>
94<br>
101<br>
102<br>
111<br>
126<br>
<br><br>

11<br>
13<br>
79<br>
111<br>
<br><br>

054/output04.txt
<?php
include ('/home/david/mysqldata.php');

\$handle = mysql_connect ("localhost", \$MYSQL_NAME, \$MYSQL_PASSWORD);

mysql_query ("CREATE DATABASE quantity54", \$handle);
mysql_select_db ("quantity54", \$handle);

mysql_query ("CREATE TABLE a (x INTEGER)", \$handle);
mysql_query ("CREATE TABLE b (x INTEGER)", \$handle);
mysql_query ("CREATE TABLE c (x INTEGER)", \$handle);

for (\$i = 0;  \$i < 20;  \$i++) {
    mysql_query ("INSERT INTO a VALUES ("" . rand () % 128 . "")", \$handle);
    mysql_query ("INSERT INTO b VALUES ("" . rand () % 128 . "")", \$handle);
    mysql_query ("INSERT INTO c VALUES ("" . rand () % 128 . "")", \$handle);

}

/* a OR b */
\$result = mysql_query ("SELECT x FROM (SELECT x FROM a UNION SELECT x FROM b) x", \$handle);
while (\$row = mysql_fetch_row (\$result))
    echo \$row [0] . "<br>n";
echo "<br><br>nn";
/* a AND c */
\$result = mysql_query ("SELECT x FROM (SELECT x FROM a INTERSECT SELECT x FROM c) x", \$handle);
while (\$row = mysql_fetch_row (\$result))
    echo \$row [0] . "<br>n";
echo "<br><br>nn";
/* (a OR b) AND c = a AND c OR b AND c*/
\$result = mysql_query ("SELECT x FROM (
    SELECT x FROM (SELECT x FROM a INTERSECT SELECT x FROM c) x
    UNION
    SELECT x FROM (SELECT x FROM c INTERSECT SELECT x FROM c) x
) x ORDER BY x", \$handle);
while (\$row = mysql_fetch_row (\$result))
    echo \$row [0] . "<br>n";
echo "<br><br>nn";


\$result = mysql_query ("SELECT x FROM (
    SELECT x FROM (SELECT x FROM a UNION SELECT x FROM b) x
    INTERSECT
    SELECT x FROM c
) x ORDER BY x", \$handle);
while (\$row = mysql_fetch_row (\$result))
    echo \$row [0] . "<br>n";
echo "<br><br>nn";

mysql_close (\$handle);
?>
054/quantity.php
<?php

include ('/home/david/mysqldata.php');

\$handle = mysql_connect ("127.0.0.1", \$MYSQL_NAME, \$MYSQL_PASSWORD);

mysql_select_db ("test055", \$handle);

mysql_query ("INSERT INTO def VALUES ("003", "003")", \$handle);

\$result = mysql_query ("SELECT * FROM abc INNER JOIN def ON abc.name1 = def.name3", \$handle);
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["name1"] . " " . \$row ["name2"] . " " . \$row ["name3"] . " " . \$row ["name4"] . "<br>n";

\$result = mysql_query ("SELECT * FROM abc LEFT JOIN def ON abc.name2 = def.name4", \$handle);
while (\$row = mysql_fetch_row (\$result))
    echo \$row [0] . " " . \$row [1] . " " . \$row [2] . " " . \$row [3] . "<br>n";

mysql_close (\$handle);
?>
055/database.php
<?php
session_start ();
?>

<form method="POST" action="./form1.php">
<input type="password" name="password1"></input>
<input type="submit"></input>
</form>

<?php
echo session_id () . "<br>n";

setcookie ("Cookie55", "THIS_IS_COOKIE_55", time () + 2400);

echo htmlentities (\$_POST ["password1"]) . "<br>n";
echo htmlentities (\$_COOKIE ["Cookie55"]) . "<br>n";
echo htmlentities (\$_COOKIE ["Cookie55a"]) . "<br>n";

session_destroy ();
?>
055/form1.php
POST /055/form1.php HTTP/1.1
host: localhost
Cookie: Cookie55a=THIS_IS_COOKIE_55a
Content-Type: application/x-www-form-urlencoded
Content-Length: 29

password1=THIS_IS_PASSWORD_55
055/httprequest.txt
david@intel-compute-stick:~\$ mysql -u root -p
Enter password:
Welcome to the MariaDB monitor.  Commands end with ; or g.
Your MariaDB connection id is 539
Server version: 10.5.12-MariaDB-0+deb11u1 Debian 11

Copyright (c) 2000, 2018, Oracle, MariaDB Corporation Ab and others.

Type 'help;' or 'h' for help. Type 'c' to clear the current input statement.

MariaDB [(none)]> CREATE DATABASE test055;
Query OK, 1 row affected (0.001 sec)

MariaDB [(none)]> USE test055;
Database changed
MariaDB [test055]> CREATE TABLE abc (name1 VARCHAR (16, name2 VARCHAR (16));
ERROR 1064 (42000): You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near ' name2 VARCHAR (16))' at line 1
MariaDB [test055]> CREATE TABLE abc (name1 VARCHAR (16), name2 VARCHAR (16));
Query OK, 0 rows affected (0.072 sec)

MariaDB [test055]> CREATE TABLE def (name3 VARCHAR (16), name4 VARCHAR (16));
Query OK, 0 rows affected (0.062 sec)

MariaDB [test055]> INSERT INTO abc VALUES ("001", "001");
Query OK, 1 row affected (0.035 sec)

MariaDB [test055]> INSERT INTO abc (name1, name2) VALUES ("001", "002");
Query OK, 1 row affected (0.031 sec)

MariaDB [test055]> INSERT INTO abc (name2, name1) VALUES ("001", "002");
Query OK, 1 row affected (0.029 sec)

MariaDB [test055]> INSERT INTO abc (name1, name2) VALUES ("001", "003");
Query OK, 1 row affected (0.029 sec)

MariaDB [test055]> INSERT INTO abc (name1, name2) VALUES ("003", "003");
Query OK, 1 row affected (0.025 sec)

MariaDB [test055]> INSERT INTO def (name3, name4) VALUES ("001", "001");
Query OK, 1 row affected (0.034 sec)

MariaDB [test055]> INSERT INTO def (name3, name4) VALUES ("001", "002");
Query OK, 1 row affected (0.026 sec)

MariaDB [test055]> SELECT * FROM abc;
+-------+-------+
| name1 | name2 |
+-------+-------+
| 001   | 001   |
| 001   | 002   |
| 002   | 001   |
| 001   | 003   |
| 003   | 003   |
+-------+-------+
5 rows in set (0.002 sec)

MariaDB [test055]> SELECT * FROM def;
+-------+-------+
| name3 | name4 |
+-------+-------+
| 001   | 001   |
| 001   | 002   |
+-------+-------+
2 rows in set (0.001 sec)

MariaDB [test055]> SELECT * FROM abc JOIN def;
+-------+-------+-------+-------+
| name1 | name2 | name3 | name4 |
+-------+-------+-------+-------+
| 001   | 001   | 001   | 001   |
| 001   | 001   | 001   | 002   |
| 001   | 002   | 001   | 001   |
| 001   | 002   | 001   | 002   |
| 002   | 001   | 001   | 001   |
| 002   | 001   | 001   | 002   |
| 001   | 003   | 001   | 001   |
| 001   | 003   | 001   | 002   |
| 003   | 003   | 001   | 001   |
| 003   | 003   | 001   | 002   |
+-------+-------+-------+-------+
10 rows in set (0.001 sec)

MariaDB [test055]> SELECT * FROM abc INNER JOIN def ON abc.name1 = def.name3;
+-------+-------+-------+-------+
| name1 | name2 | name3 | name4 |
+-------+-------+-------+-------+
| 001   | 001   | 001   | 001   |
| 001   | 001   | 001   | 002   |
| 001   | 002   | 001   | 001   |
| 001   | 002   | 001   | 002   |
| 001   | 003   | 001   | 001   |
| 001   | 003   | 001   | 002   |
+-------+-------+-------+-------+
6 rows in set (0.002 sec)

MariaDB [test055]> SELECT * FROM abc RIGHT JOIN def ON abc.name2 = def.name4;
+-------+-------+-------+-------+
| name1 | name2 | name3 | name4 |
+-------+-------+-------+-------+
| 001   | 001   | 001   | 001   |
| 001   | 002   | 001   | 002   |
| 002   | 001   | 001   | 001   |
+-------+-------+-------+-------+
3 rows in set (0.002 sec)

MariaDB [test055]> SELECT * FROM abc LEFT JOIN def ON abc.name1 = def.name3;
+-------+-------+-------+-------+
| name1 | name2 | name3 | name4 |
+-------+-------+-------+-------+
| 001   | 001   | 001   | 001   |
| 001   | 002   | 001   | 001   |
| 001   | 003   | 001   | 001   |
| 001   | 001   | 001   | 002   |
| 001   | 002   | 001   | 002   |
| 001   | 003   | 001   | 002   |
| 002   | 001   | NULL  | NULL  |
| 003   | 003   | NULL  | NULL  |
+-------+-------+-------+-------+
8 rows in set (0.002 sec)

MariaDB [test055]> QUIT
Bye
david@intel-compute-stick:~\$

055/output01.txt
001 001 001 001<br>
001 001 001 002<br>
001 002 001 001<br>
001 002 001 002<br>
001 003 001 001<br>
001 003 001 002<br>
003 003 003 003<br>
001 001 001 001<br>
002 001 001 001<br>
001 002 001 002<br>
001 003 003 003<br>
003 003 003 003<br>
055/output02.txt
david@intel-compute-stick:/var/www/html/055\$ telnet localhost 80
Trying ::1...
Connected to localhost.
Escape character is '\^]'.
POST /055/form1.php HTTP/1.1
host: localhost
Cookie: Cookie55a=THIS_IS_COOKIE_55a
Content-Type: application/x-www-form-urlencoded
Content-Length: 29

password1=THIS_IS_PASSWORD_55
HTTP/1.1 200 OK
Date: Sun, 29 May 2022 14:51:35 GMT
Server: Apache/2.4.52 (Debian)
Set-Cookie: PHPSESSID=g6egmlreoj6aut39dndjt6e8t4; path=/
Expires: Thu, 19 Nov 1981 08:52:00 GMT
Cache-Control: no-store, no-cache, must-revalidate, post-check=0, pre-check=0
Pragma: no-cache
Set-Cookie: Cookie55=THIS_IS_COOKIE_55; expires=Sun, 29-May-2022 15:31:36 GMT; Max-Age=2400
Vary: Accept-Encoding
Content-Length: 214
Content-Type: text/html; charset=UTF-8


<form method="POST" action="./form1.php">
<input type="password" name="password1"></input>
<input type="submit"></input>
</form>

g6egmlreoj6aut39dndjt6e8t4<br>
THIS_IS_PASSWORD_55<br>
<br>
THIS_IS_COOKIE_55a<br>

Connection closed by foreign host.
david@intel-compute-stick:/var/www/html/055\$

055/output03.txt
30<br>
29<br>
4<br>
43<br>
11<br>
36<br>
17<br>
13<br>
41<br>
35<br>
16<br>
55<br>
7<br>
25<br>
52<br>
39<br>
6<br>
14<br>
40<br>
38<br>
47<br>
10<br>
59<br>
19<br>
24<br>
49<br>
28<br>
48<br>
15<br>
44<br>
27<br>
18<br>
53<br>
<br>

30<br>
29<br>
4<br>
43<br>
11<br>
36<br>
17<br>
13<br>
41<br>
35<br>
16<br>
55<br>
7<br>
25<br>
52<br>
39<br>
6<br>
14<br>
40<br>
18<br>
26<br>
51<br>
31<br>
63<br>
27<br>
61<br>
19<br>
24<br>
3<br>
12<br>
<br>

38<br>
47<br>
10<br>
59<br>
19<br>
24<br>
49<br>
28<br>
48<br>
15<br>
44<br>
27<br>
41<br>
18<br>
53<br>
39<br>
16<br>
26<br>
51<br>
31<br>
7<br>
63<br>
61<br>
35<br>
29<br>
43<br>
3<br>
52<br>
12<br>
40<br>
25<br>
<br>

41<br>
<br>

19<br>
24<br>
27<br>
18<br>
<br>

29<br>
43<br>
35<br>
16<br>
7<br>
25<br>
52<br>
39<br>
40<br>
<br>

7<br>
16<br>
18<br>
19<br>
24<br>
25<br>
27<br>
29<br>
35<br>
39<br>
40<br>
43<br>
52<br>
<br>

7<br>
16<br>
18<br>
19<br>
24<br>
25<br>
27<br>
29<br>
35<br>
39<br>
40<br>
43<br>
52<br>
<br>

18<br>
19<br>
24<br>
27<br>
41<br>
<br>

18<br>
19<br>
24<br>
27<br>
41<br>
<br>

7<br>
16<br>
25<br>
29<br>
35<br>
39<br>
40<br>
41<br>
43<br>
52<br>
<br>

7<br>
16<br>
25<br>
29<br>
35<br>
39<br>
40<br>
41<br>
43<br>
52<br>
<br>

055/output04.txt
<?php
include ('/home/david/mysqldata.php');

\$handle = mysql_connect ("localhost", \$MYSQL_NAME, \$MYSQL_PASSWORD);

mysql_query ("CREATE DATABASE quantity055", \$handle);

mysql_select_db ("quantity055", \$handle);

mysql_query ("CREATE TABLE a (x INTEGER)", \$handle);
mysql_query ("CREATE TABLE b (x INTEGER)", \$handle);
mysql_query ("CREATE TABLE c (x INTEGER)", \$handle);

for (\$i = 0;  \$i < 20;  \$i++) {
    mysql_query ("INSERT INTO a VALUES ("" . rand () % 64 . "")", \$handle);
    mysql_query ("INSERT INTO b VALUES ("" . rand () % 64 . "")", \$handle);
    mysql_query ("INSERT INTO c VALUES ("" . rand () % 64 . "")", \$handle);
}

/*
a OR b
a OR c
b OR c
*/

\$result = mysql_query ("SELECT x FROM (SELECT x FROM a UNION SELECT x FROM b) x", \$handle);
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br>nn";
\$result = mysql_query ("SELECT x FROM (SELECT x FROM a UNION SELECT x FROM c) x", \$handle);
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br>nn";
\$result = mysql_query ("SELECT x FROM (SELECT x FROM b UNION SELECT x FROM c) x", \$handle);
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br>nn";

/*
a AND b
b AND c
a AND c
*/

\$result = mysql_query ("SELECT x FROM (SELECT x FROM a INTERSECT SELECT x FROM b) x", \$handle);
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br>nn";
\$result = mysql_query ("SELECT x FROM (SELECT x FROM b INTERSECT SELECT x FROM c) x", \$handle);
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br>nn";
\$result = mysql_query ("SELECT x FROM (SELECT x FROM a INTERSECT SELECT x FROM c) x", \$handle);
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br>nn";

/*
(a OR b) AND c = a AND c OR b AND c
*/

\$result = mysql_query ("SELECT x FROM (
    SELECT x FROM (SELECT x FROM a UNION SELECT x FROM b) x
    INTERSECT
    SELECT x FROM c
) x ORDER BY x", \$handle);
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br>nn";

\$result = mysql_query ("SELECT x FROM (
    SELECT x FROM (SELECT x FROM a INTERSECT SELECT x FROM c) x
    UNION
    SELECT x FROM (SELECT x FROM b INTERSECT SELECT x FROM c) x
) x ORDER BY x", \$handle);
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br>nn";
/*
(a OR c) AND b = a AND b OR c AND b
*/

\$result = mysql_query ("SELECT x FROM (
    SELECT x FROM (SELECT x FROM a UNION SELECT x FROM c) x
    INTERSECT
    SELECT x FROM b
) x ORDER BY x", \$handle);
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br>nn";

\$result = mysql_query ("SELECT x FROM (
    SELECT x FROM (SELECT x FROM a INTERSECT SELECT x FROM b) x
    UNION
    SELECT x FROM (SELECT x FROM c INTERSECT SELECT x FROM b) x
) x ORDER BY x", \$handle);
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br>nn";

/*
(b OR c) AND a = b AND a OR c AND a
*/
\$result = mysql_query ("SELECT x FROM (
    SELECT x FROM (SELECT x FROM b INTERSECT SELECT x FROM a) x
    UNION
    SELECT x FROM (SELECT x FROM c INTERSECT SELECT x FROM a) x
) x ORDER BY x", \$handle);
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br>nn";

\$result = mysql_query ("SELECT x FROM (
    SELECT x FROM (SELECT x FROM b UNION SELECT x FROM c) x
    INTERSECT
    SELECT x FROM a
) x ORDER BY x", \$handle);
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br>nn";


mysql_close (\$handle);
?>
055/quantity.php
<?php
include ('/home/david/mysqldata.php');

\$handle = mysql_connect ("localhost", \$MYSQL_NAME, \$MYSQL_PASSWORD);

mysql_select_db ("test056", \$handle);

mysql_query ("INSERT INTO def VALUES ("002", "002")", \$handle);

\$result = mysql_query ("SELECT * FROM abc INNER JOIN def ON abc.name1 = def.name3", \$handle);
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["name1"] . " " . \$row ["name2"] . " " . \$row ["name3"] . " " . \$row ["name4"] . "<br>n";


\$result = mysql_query ("SELECT * FROM abc RIGHT JOIN def ON abc.name1 = def.name3", \$handle);
while (\$row = mysql_fetch_row (\$result))
    echo \$row [0] . " " . \$row [1] . " " . \$row [2] . " " . \$row [3] . "<br>n";

mysql_close (\$handle);
?>
056/database.php
<?php
session_start ();
?>

<form method="POST" action="./form1.php">
<input type="text" name="text1"></input>
<input type="submit"></input>
</form>

<?php
echo session_id () . "<br>n";

setcookie ("Cookie56", "COOKIE56", time () + 3600);

echo htmlentities (\$_POST ["text1"]) . "<br>n";
echo htmlentities (\$_COOKIE ["Cookie56"]) . "<br>n";
echo htmlentities (\$_COOKIE ["Cookie56a"]) . "<br>n";

session_destroy ();
?>
056/form1.php
POST /056/form1.php HTTP/1.1
host: localhost
Cookie: Cookie56a=COOKIE56a
Content-Type: application/x-www-form-urlencoded
Content-Length: 12

text1=TEXT56
056/httprequest.txt
david@intel-compute-stick:~\$ mysql -u root -p
Enter password:
Welcome to the MariaDB monitor.  Commands end with ; or g.
Your MariaDB connection id is 558
Server version: 10.5.12-MariaDB-0+deb11u1 Debian 11

Copyright (c) 2000, 2018, Oracle, MariaDB Corporation Ab and others.

Type 'help;' or 'h' for help. Type 'c' to clear the current input statement.

MariaDB [(none)]> SHOW DATABASES;
+--------------------+
| Database           |
+--------------------+
| information_schema |
| menge001           |
| menge002           |
| menge003           |
| menge004           |
| menge006           |
| menge007           |
| menge008           |
| mysoc1             |
| mysocial_database  |
| mysql              |
| mytest             |
| performance_schema |
| quantity001        |
| quantity002        |
| quantity003        |
| quantity004        |
| quantity007        |
| quantity008        |
| quantity035        |
| quantity035a       |
| quantity036        |
| quantity037        |
| quantity038        |
| quantity038a       |
| quantity039        |
| quantity040        |
| quantity041        |
| quantity043        |
| quantity044        |
| quantity045        |
| quantity047        |
| quantity048        |
| quantity049        |
| quantity051        |
| quantity052        |
| quantity055        |
| quantity30         |
| quantity31         |
| quantity50         |
| quantity53         |
| quantity54         |
| taadsasda          |
| test001            |
| test002            |
| test003            |
| test004            |
| test005            |
| test006            |
| test007            |
| test008            |
| test009            |
| test010            |
| test011            |
| test012            |
| test013            |
| test014            |
| test015            |
| test016            |
| test019            |
| test020            |
| test021            |
| test022            |
| test023            |
| test024            |
| test025            |
| test026            |
| test027            |
| test028            |
| test030            |
| test031            |
| test032            |
| test033            |
| test034            |
| test035            |
| test036            |
| test037            |
| test038            |
| test039            |
| test040            |
| test041            |
| test042            |
| test043            |
| test044            |
| test045            |
| test046            |
| test047            |
| test048            |
| test049            |
| test050            |
| test051            |
| test052            |
| test053            |
| test054            |
| test055            |
+--------------------+
95 rows in set (0.006 sec)

MariaDB [(none)]> CREATE DATABASE test056;
Query OK, 1 row affected (0.002 sec)

MariaDB [(none)]> USE test056;
Database changed
MariaDB [test056]> CREATE TABLE abc (name1 VARCHAR (8), name2 VARCHAR (8));
Query OK, 0 rows affected (0.063 sec)

MariaDB [test056]> CREATE TABLE def (name3 VARCHAR (8), name4 VARCHAR (8));
Query OK, 0 rows affected (0.056 sec)

MariaDB [test056]> INSERT INTO abc VALUES ("001", "001");
Query OK, 1 row affected (0.030 sec)

MariaDB [test056]> INSERT INTO abc VALUES ("001", "002");
Query OK, 1 row affected (0.030 sec)

MariaDB [test056]> INSERT INTO abc VALUES ("002", "001");
Query OK, 1 row affected (0.027 sec)

MariaDB [test056]> INSERT INTO abc VALUES ("002", "002");
Query OK, 1 row affected (0.028 sec)

MariaDB [test056]> INSERT INTO def VALUES ("001", "001");
Query OK, 1 row affected (0.032 sec)

MariaDB [test056]> INSERT INTO def VALUES ("001", "002");
Query OK, 1 row affected (0.025 sec)

MariaDB [test056]> SELECT * FROM abc;
+-------+-------+
| name1 | name2 |
+-------+-------+
| 001   | 001   |
| 001   | 002   |
| 002   | 001   |
| 002   | 002   |
+-------+-------+
4 rows in set (0.001 sec)

MariaDB [test056]> SELECT * FROM def;
+-------+-------+
| name3 | name4 |
+-------+-------+
| 001   | 001   |
| 001   | 002   |
+-------+-------+
2 rows in set (0.001 sec)

MariaDB [test056]> SELECT * FROM abc JOIN def;
+-------+-------+-------+-------+
| name1 | name2 | name3 | name4 |
+-------+-------+-------+-------+
| 001   | 001   | 001   | 001   |
| 001   | 001   | 001   | 002   |
| 001   | 002   | 001   | 001   |
| 001   | 002   | 001   | 002   |
| 002   | 001   | 001   | 001   |
| 002   | 001   | 001   | 002   |
| 002   | 002   | 001   | 001   |
| 002   | 002   | 001   | 002   |
+-------+-------+-------+-------+
8 rows in set (0.002 sec)

MariaDB [test056]> SELECT * FROM abc INNER JOIN def ON abc.name1 = def.name3;
+-------+-------+-------+-------+
| name1 | name2 | name3 | name4 |
+-------+-------+-------+-------+
| 001   | 001   | 001   | 001   |
| 001   | 001   | 001   | 002   |
| 001   | 002   | 001   | 001   |
| 001   | 002   | 001   | 002   |
+-------+-------+-------+-------+
4 rows in set (0.002 sec)

MariaDB [test056]> SELECT * FROM abc RIGHT JOIN def ON abc.name1 = def.name3;
+-------+-------+-------+-------+
| name1 | name2 | name3 | name4 |
+-------+-------+-------+-------+
| 001   | 001   | 001   | 001   |
| 001   | 001   | 001   | 002   |
| 001   | 002   | 001   | 001   |
| 001   | 002   | 001   | 002   |
+-------+-------+-------+-------+
4 rows in set (0.002 sec)

MariaDB [test056]> SELECT * FROM abc LEFT JOIN def ON abc.name2 = def.name4;
+-------+-------+-------+-------+
| name1 | name2 | name3 | name4 |
+-------+-------+-------+-------+
| 001   | 001   | 001   | 001   |
| 002   | 001   | 001   | 001   |
| 001   | 002   | 001   | 002   |
| 002   | 002   | 001   | 002   |
+-------+-------+-------+-------+
4 rows in set (0.002 sec)

MariaDB [test056]> QUIT
Bye
david@intel-compute-stick:~\$

056/output01.txt
001 001 001 001<br>
001 001 001 002<br>
001 002 001 001<br>
001 002 001 002<br>
002 001 002 002<br>
002 002 002 002<br>
001 001 001 001<br>
001 001 001 002<br>
001 002 001 001<br>
001 002 001 002<br>
002 001 002 002<br>
002 002 002 002<br>
056/output02.txt
david@intel-compute-stick:/var/www/html/056\$ telnet 127.0.0.1 80
Trying 127.0.0.1...
Connected to 127.0.0.1.
Escape character is '\^]'.
POST /056/form1.php HTTP/1.1
host: localhost
Cookie: Cookie56a=COOKIE56a
Content-Type: application/x-www-form-urlencoded
Content-Length: 12

text1=TEXT56
HTTP/1.1 200 OK
Date: Mon, 30 May 2022 13:45:42 GMT
Server: Apache/2.4.52 (Debian)
Set-Cookie: PHPSESSID=ri8e6pabjfpdg4u4m0oh37iap5; path=/
Expires: Thu, 19 Nov 1981 08:52:00 GMT
Cache-Control: no-store, no-cache, must-revalidate, post-check=0, pre-check=0
Pragma: no-cache
Set-Cookie: Cookie56=COOKIE56; expires=Mon, 30-May-2022 14:45:43 GMT; Max-Age=3600
Vary: Accept-Encoding
Content-Length: 184
Content-Type: text/html; charset=UTF-8


<form method="POST" action="./form1.php">
<input type="text" name="text1"></input>
<input type="submit"></input>
</form>

ri8e6pabjfpdg4u4m0oh37iap5<br>
TEXT56<br>
<br>
COOKIE56a<br>

Connection closed by foreign host.
david@intel-compute-stick:/var/www/html/056\$

056/output03.txt
45<br>
9<br>
36<br>
32<br>
41<br>
7<br>
4<br>
53<br>
1<br>
49<br>
52<br>
50<br>
3<br>
8<br>
6<br>
24<br>
55<br>
46<br>
17<br>
5<br>
16<br>
23<br>
21<br>
<br><br>

45<br>
9<br>
36<br>
32<br>
41<br>
7<br>
4<br>
53<br>
1<br>
49<br>
52<br>
50<br>
3<br>
51<br>
27<br>
25<br>
18<br>
42<br>
8<br>
31<br>
20<br>
13<br>
10<br>
<br><br>

45<br>
8<br>
6<br>
24<br>
55<br>
46<br>
17<br>
36<br>
5<br>
16<br>
52<br>
23<br>
32<br>
21<br>
51<br>
27<br>
25<br>
41<br>
18<br>
42<br>
31<br>
20<br>
13<br>
50<br>
10<br>
<br><br>

45<br>
36<br>
32<br>
52<br>
<br><br>

45<br>
41<br>
50<br>
<br><br>

45<br>
8<br>
<br><br>

8<br>
41<br>
45<br>
50<br>
<br><br>

8<br>
41<br>
45<br>
50<br>
<br><br>

8<br>
32<br>
36<br>
45<br>
52<br>
<br><br>

8<br>
32<br>
36<br>
45<br>
52<br>
<br><br>

32<br>
36<br>
41<br>
45<br>
50<br>
52<br>
<br><br>

32<br>
36<br>
41<br>
45<br>
50<br>
52<br>
<br><br>

056/output04.txt
<?php
include ('/home/david/mysqldata.php');

\$handle = mysql_connect ("localhost", \$MYSQL_NAME, \$MYSQL_PASSWORD);

mysql_query ("CREATE DATABASE quantity56", \$handle);

mysql_select_db ("quantity56", \$handle);

mysql_query ("CREATE TABLE a (x INTEGER)", \$handle);
mysql_query ("CREATE TABLE b (x INTEGER)", \$handle);
mysql_query ("CREATE TABLE c (x INTEGER)", \$handle);

for (\$i = 0;  \$i < 15;  \$i++) {
    mysql_query ("INSERT INTO a VALUES ("" . rand () % 56 . "")", \$handle);
    mysql_query ("INSERT INTO c VALUES ("" . rand () % 56 . "")", \$handle);
    mysql_query ("INSERT INTO b VALUES ("" . rand () % 56 . "")", \$handle);
}

/*
a OR b
a OR c
b OR c
*/

\$result = mysql_query ("SELECT x FROM (SELECT x FROM a UNION SELECT x FROM b) x", \$handle);
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br><br>nn";
\$result = mysql_query ("SELECT x FROM (SELECT x FROM a UNION SELECT x FROM c) x", \$handle);
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br><br>nn";
\$result = mysql_query ("SELECT x FROM (SELECT x FROM b UNION SELECT x FROM c) x", \$handle);
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br><br>nn";

/*
a AND b
a AND c
b AND c
*/

\$result = mysql_query ("SELECT x FROM (SELECT x FROM a INTERSECT SELECT x FROM b) x", \$handle);
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br><br>nn";
\$result = mysql_query ("SELECT x FROM (SELECT x FROM a INTERSECT SELECT x FROM c) x", \$handle);
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br><br>nn";
\$result = mysql_query ("SELECT x FROM (SELECT x FROM b INTERSECT SELECT x FROM c) x", \$handle);
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br><br>nn";

/*
(a OR b) AND c = a AND c OR b AND c
*/

\$result = mysql_query ("SELECT x FROM (
    SELECT x FROM (SELECT x FROM a INTERSECT SELECT x FROM c) x
    UNION
    SELECT x FROM (SELECT x FROM b INTERSECT SELECT x FROM c) x
) x ORDER BY x", \$handle);
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br><br>nn";

\$result = mysql_query ("SELECT x FROM (
    SELECT x FROM (SELECT x FROM a UNION SELECT x FROM b) x
    INTERSECT
    SELECT x FROM c
) x ORDER BY x", \$handle);
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br><br>nn";

/*
(a OR c) AND b = a AND b OR c AND b
*/
\$result = mysql_query ("SELECT x FROM (
    SELECT x FROM (SELECT x FROM a INTERSECT SELECT x FROM b) x
    UNION
    SELECT x FROM (SELECT x FROM c INTERSECT SELECT x FROM b) x
) x ORDER BY x", \$handle);
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br><br>nn";

\$result = mysql_query ("SELECT x FROM (
    SELECT x FROM (SELECT x FROM a UNION SELECT x FROM c) x
    INTERSECT
    SELECT x FROM b
) x ORDER BY x", \$handle);
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br><br>nn";
/*
(b OR c) AND a = b AND a OR c AND a
*/
\$result = mysql_query ("SELECT x FROM (
    SELECT x FROM (SELECT x FROM b INTERSECT SELECT x FROM a) x
    UNION
    SELECT x FROM (SELECT x FROM c INTERSECT SELECT x FROM a) x
) x ORDER BY x", \$handle);
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br><br>nn";

\$result = mysql_query ("SELECT x FROM (
    SELECT x FROM (SELECT x FROM b UNION SELECT x FROM c) x
    INTERSECT
    SELECT x FROM a
) x ORDER BY x", \$handle);
while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["x"] . "<br>n";
echo "<br><br>nn";

mysql_close (\$handle);
?>
056/quantity.php
<?php
include ('/home/david/mysqldata.php');

\$handle = mysql_connect ("localhost", \$MYSQL_NAME, \$MYSQL_PASSWORD);

mysql_select_db ("test057", \$handle);

mysql_query ("INSERT INTO def VALUES ("002", "002")", \$handle);

\$result = mysql_query ("SELECT * FROM abc INNER JOIN def ON abc.name1 = def.name3", \$handle);

while (\$row = mysql_fetch_assoc (\$result))
    echo \$row ["name1"] . " " . \$row ["name2"] . " " . \$row ["name3"] . " " . \$row ["name4"] . "<br>n";

\$result = mysql_query ("SELECT * FROM abc LEFT JOIN def ON abc.name2 = def.name4", \$handle);

while (\$row = mysql_fetch_row (\$result))
    echo \$row [0] . " " . \$row [1] . " " . \$row [2] . " " . \$row [3] . "<br>n";

mysql_close (\$handle);
?>
057/database.php
<?php
session_start ();
?>

<form method="POST" action="./form1.php">
<input type="password" name="pwd1"></input>
<input type="submit"></input>
</form>

<?php
echo session_id () . "<br>n";

setcookie ("Cookie57", "COOKIE57", time () + 60);

echo htmlentities (\$_POST ["pwd1"]) . "<br>n";
echo htmlentities (\$_COOKIE ["Cookie57"]) . "<br>n";
echo htmlentities (\$_COOKIE ["Cookie57a"]) . "<br>n";

session_destroy ();
?>
057/form1.php
POST /057/form1.php HTTP/1.1
host: localhost
Cookie: Cookie57a=COOOKIE57a
Content-Type: application/x-www-form-urlencoded
Content-Length: 15

pwd1=PASSWORD57
057/httprequest.txt
david@intel-compute-stick:~\$ mysql -u root -p
Enter password:
Welcome to the MariaDB monitor.  Commands end with ; or g.
Your MariaDB connection id is 595
Server version: 10.5.12-MariaDB-0+deb11u1 Debian 11

Copyright (c) 2000, 2018, Oracle, MariaDB Corporation Ab and others.

Type 'help;' or 'h' for help. Type 'c' to clear the current input statement.

MariaDB [(none)]> CREATE DATABASE test057;
Query OK, 1 row affected (0.030 sec)

MariaDB [(none)]> USE test057;
Database changed
MariaDB [test057]> CREATE TABLE abc (name1 VARCHAR (8, name2 VARCHAR (8));
ERROR 1064 (42000): You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near ' name2 VARCHAR (8))' at line 1
MariaDB [test057]> CREATE TABLE abc (name1 VARCHAR (8), name2 VARCHAR (8));
Query OK, 0 rows affected (0.055 sec)

MariaDB [test057]> CREATE TABLE def (name3 VARCHAR (8), name4 VARCHAR (8));
Query OK, 0 rows affected (0.056 sec)

MariaDB [test057]> INSERT INTO abc VALUES ("001", "001");
Query OK, 1 row affected (0.027 sec)

MariaDB [test057]> INSERT INTO abc VALUES ("001", "002");
Query OK, 1 row affected (0.033 sec)

MariaDB [test057]> INSERT INTO abc VALUES ("002", "001");
Query OK, 1 row affected (0.028 sec)

MariaDB [test057]> INSERT INTO abc VALUES ("002", "002");
Query OK, 1 row affected (0.028 sec)

MariaDB [test057]> INSERT INTO def VALUES ("001", "001");
Query OK, 1 row affected (0.030 sec)

MariaDB [test057]> INSERT INTO def VALUES ("001", "002");
Query OK, 1 row affected (0.027 sec)

MariaDB [test057]> SELECT * FROM abc;
+-------+-------+
| name1 | name2 |
+-------+-------+
| 001   | 001   |
| 001   | 002   |
| 002   | 001   |
| 002   | 002   |
+-------+-------+
4 rows in set (0.001 sec)

MariaDB [test057]> SELECT * FROM abc JOIN def;
+-------+-------+-------+-------+
| name1 | name2 | name3 | name4 |
+-------+-------+-------+-------+
| 001   | 001   | 001   | 001   |
| 001   | 001   | 001   | 002   |
| 001   | 002   | 001   | 001   |
| 001   | 002   | 001   | 002   |
| 002   | 001   | 001   | 001   |
| 002   | 001   | 001   | 002   |
| 002   | 002   | 001   | 001   |
| 002   | 002   | 001   | 002   |
+-------+-------+-------+-------+
8 rows in set (0.032 sec)

MariaDB [test057]> SELECT * FROM def;
+-------+-------+
| name3 | name4 |
+-------+-------+
| 001   | 001   |
| 001   | 002   |
+-------+-------+
2 rows in set (0.001 sec)

MariaDB [test057]> SELECT * FROM abc INNER JOIN def ON abc.name1 = def.name3;
+-------+-------+-------+-------+
| name1 | name2 | name3 | name4 |
+-------+-------+-------+-------+
| 001   | 001   | 001   | 001   |
| 001   | 001   | 001   | 002   |
| 001   | 002   | 001   | 001   |
| 001   | 002   | 001   | 002   |
+-------+-------+-------+-------+
4 rows in set (0.002 sec)

MariaDB [test057]> SELECT * FROM abc RIGHT JOIN def ON abc.name1 = def.name3;
+-------+-------+-------+-------+
| name1 | name2 | name3 | name4 |
+-------+-------+-------+-------+
| 001   | 001   | 001   | 001   |
| 001   | 001   | 001   | 002   |
| 001   | 002   | 001   | 001   |
| 001   | 002   | 001   | 002   |
+-------+-------+-------+-------+
4 rows in set (0.002 sec)

MariaDB [test057]> SELECT * FROM abc LEFT JOIN def ON abc.name2 = def.name4;
+-------+-------+-------+-------+
| name1 | name2 | name3 | name4 |
+-------+-------+-------+-------+
| 001   | 001   | 001   | 001   |
| 002   | 001   | 001   | 001   |
| 001   | 002   | 001   | 002   |
| 002   | 002   | 001   | 002   |
+-------+-------+-------+-------+
4 rows in set (0.002 sec)

MariaDB [test057]> QUIT
Bye
david@intel-compute-stick:~\$

057/output01.txt
001 001 001 001<br>
001 001 001 002<br>
001 002 001 001<br>
001 002 001 002<br>
002 001 002 002<br>
002 002 002 002<br>
001 001 001 001<br>
002 001 001 001<br>
001 002 001 002<br>
002 002 001 002<br>
001 002 002 002<br>
002 002 002 002<br>
057/output02.txt
david@intel-compute-stick:/var/www/html/057\$ telnet localhost 80
Trying ::1...
Connected to localhost.
Escape character is '\^]'.
POST /057/form1.php HTTP/1.1
host: localhost
Cookie: Cookie57a=COOOKIE57a
Content-Type: application/x-www-form-urlencoded
Content-Length: 15

pwd1=PASSWORD57
HTTP/1.1 200 OK
Date: Tue, 31 May 2022 10:36:39 GMT
Server: Apache/2.4.52 (Debian)
Set-Cookie: PHPSESSID=9tkeaqsv2f0egug5bs6sev2522; path=/
Expires: Thu, 19 Nov 1981 08:52:00 GMT
Cache-Control: no-store, no-cache, must-revalidate, post-check=0, pre-check=0
Pragma: no-cache
Set-Cookie: Cookie57=COOKIE57; expires=Tue, 31-May-2022 10:37:40 GMT; Max-Age=60
Vary: Accept-Encoding
Content-Length: 192
Content-Type: text/html; charset=UTF-8


<form method="POST" action="./form1.php">
<input type="password" name="pwd1"></input>
<input type="submit"></input>
</form>

9tkeaqsv2f0egug5bs6sev2522<br>
PASSWORD57<br>
<br>
COOOKIE57a<br>

Connection closed by foreign host.
david@intel-compute-stick:/var/www/html/057\$

057/output03.txt
41<br>
122<br>
103<br>
14<br>
68<br>
82<br>
125<br>
86<br>
53<br>
3<br>
20<br>
88<br>
101<br>
108<br>
99<br>
18<br>
105<br>
79<br>
104<br>
29<br>
30<br>
66<br>
16<br>
94<br>
51<br>
21<br>
126<br>
13<br>
123<br>
91<br>
19<br>
6<br>
31<br>
17<br>
52<br>
32<br>
117<br>
119<br>
58<br>
24<br>
49<br>
64<br>
106<br>
76<br>
35<br>
42<br>
4<br>
45<br>
40<br>
15<br>
98<br>
7<br>
60<br>
63<br>
84<br>
44<br>
89<br>
90<br>
59<br>
74<br>
114<br>
8<br>
111<br>
56<br>
55<br>
27<br>
46<br>
93<br>
<br><br>

41<br>
122<br>
103<br>
14<br>
68<br>
82<br>
125<br>
86<br>
53<br>
3<br>
20<br>
88<br>
101<br>
108<br>
99<br>
18<br>
105<br>
79<br>
104<br>
29<br>
30<br>
66<br>
16<br>
94<br>
51<br>
21<br>
126<br>
13<br>
123<br>
91<br>
19<br>
6<br>
31<br>
17<br>
52<br>
32<br>
117<br>
119<br>
58<br>
24<br>
49<br>
64<br>
106<br>
67<br>
7<br>
46<br>
113<br>
102<br>
25<br>
1<br>
36<br>
78<br>
5<br>
81<br>
4<br>
44<br>
59<br>
89<br>
77<br>
34<br>
85<br>
54<br>
15<br>
65<br>
124<br>
71<br>
120<br>
87<br>
<br><br>

76<br>
35<br>
42<br>
51<br>
4<br>
117<br>
86<br>
88<br>
41<br>
45<br>
40<br>
15<br>
29<br>
98<br>
52<br>
49<br>
7<br>
60<br>
63<br>
84<br>
44<br>
17<br>
125<br>
89<br>
90<br>
59<br>
74<br>
114<br>
101<br>
8<br>
111<br>
56<br>
55<br>
68<br>
27<br>
46<br>
104<br>
93<br>
67<br>
13<br>
119<br>
113<br>
102<br>
25<br>
1<br>
36<br>
78<br>
5<br>
123<br>
81<br>
82<br>
77<br>
34<br>
108<br>
85<br>
94<br>
99<br>
54<br>
105<br>
65<br>
124<br>
71<br>
120<br>
106<br>
79<br>
87<br>
122<br>
<br><br>

41<br>
68<br>
125<br>
86<br>
88<br>
101<br>
104<br>
29<br>
51<br>
17<br>
52<br>
117<br>
49<br>
<br><br>

41<br>
122<br>
82<br>
86<br>
101<br>
108<br>
99<br>
105<br>
79<br>
104<br>
94<br>
51<br>
13<br>
123<br>
52<br>
119<br>
106<br>
<br><br>

51<br>
4<br>
86<br>
41<br>
15<br>
52<br>
7<br>
44<br>
89<br>
59<br>
101<br>
46<br>
104<br>
<br><br>

4<br>
7<br>
13<br>
15<br>
41<br>
44<br>
46<br>
51<br>
52<br>
59<br>
79<br>
82<br>
86<br>
89<br>
94<br>
99<br>
101<br>
104<br>
105<br>
106<br>
108<br>
119<br>
122<br>
123<br>
<br><br>

4<br>
7<br>
13<br>
15<br>
41<br>
44<br>
46<br>
51<br>
52<br>
59<br>
79<br>
82<br>
86<br>
89<br>
94<br>
99<br>
101<br>
104<br>
105<br>
106<br>
108<br>
119<br>
122<br>
123<br>
<br><br>

4<br>
7<br>
15<br>
17<br>
29<br>
41<br>
44<br>
46<br>
49<br>
51<br>
52<br>
59<br>
68<br>
86<br>
88<br>
89<br>
101<br>
104<br>
117<br>
125<br>
<br><br>

4<br>
7<br>
15<br>
17<br>
29<br>
41<br>
44<br>
46<br>
49<br>
51<br>
52<br>
59<br>
68<br>
86<br>
88<br>
89<br>
101<br>
104<br>
117<br>
125<br>
<br><br>

17<br>
29<br>
41<br>
49<br>
51<br>
52<br>
68<br>
86<br>
88<br>
101<br>
104<br>
117<br>
125<br>
<br><br>

13<br>
17<br>
29<br>
41<br>
49<br>
51<br>
52<br>
68<br>
79<br>
82<br>
86<br>
88<br>
94<br>
99<br>
101<br>
104<br>
105<br>
106<br>
108<br>
117<br>
119<br>
122<br>
123<br>
125<br>
<br><br>

057/output04.txt
<?php
include ('/home/david/mysqldata.php');

\$handle = mysql_connect ("localhost", \$MYSQL_NAME, \$MYSQL_PASSWORD);

mysql_query ("CREATE DATABASE quantity57", \$handle);

mysql_select_db ("quantity57", \$handle);

mysql_query ("CREATE TABLE a (x INTEGER)", \$handle);
mysql_query ("CREATE TABLE b (x INTEGER)", \$handle);
mysql_query ("CREATE TABLE c (x INTEGER)", \$handle);

for (\$i = 0;  \$i < 24;  \$i++) {
    mysql_query ("INSERT INTO a VALUES ("" . rand () % 128 . "")", \$handle);
    mysql_query ("INSERT INTO b VALUES ("" . rand () % 128 . "")", \$handle);
    mysql_query ("INSERT INTO c VALUES ("" . rand () % 128 . "")", \$handle);
}
/*
a OR b
a OR c
b OR c
*/

\$result = mysql_query ("SELECT x FROM (SELECT x FROM a UNION SELECT x FROM b) x", \$handle);
while (\$row = mysql_fetch_row (\$result))
    echo \$row [0] . "<br>n";
echo "<br><br>nn";
\$result = mysql_query ("SELECT x FROM (SELECT x FROM a UNION SELECT x FROM c) x", \$handle);
while (\$row = mysql_fetch_row (\$result))
    echo \$row [0] . "<br>n";
echo "<br><br>nn";
\$result = mysql_query ("SEL