{"id":177408,"date":"2023-05-31T23:32:03","date_gmt":"2023-05-31T22:32:03","guid":{"rendered":"https:\/\/datascientest.com\/de\/?p=177408"},"modified":"2023-10-30T09:59:40","modified_gmt":"2023-10-30T08:59:40","slug":"sql-group-by-der-unverzichtbare-sql-befehl-fuer-data-analysts","status":"publish","type":"post","link":"https:\/\/datascientest.com\/de\/sql-group-by-der-unverzichtbare-sql-befehl-fuer-data-analysts","title":{"rendered":"SQL GROUP BY: Der unverzichtbare SQL-Befehl f\u00fcr Data Analysts"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"177408\" class=\"elementor elementor-177408\" data-elementor-post-type=\"post\">\n\t\t\t\t\t\t\t<div class=\"elementor-element elementor-element-697503b e-flex e-con-boxed e-con\" data-id=\"697503b\" data-element_type=\"container\" data-settings=\"{&quot;content_width&quot;:&quot;boxed&quot;}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-6a801ed elementor-widget elementor-widget-heading\" data-id=\"6a801ed\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<style>\/*! elementor - v3.15.0 - 02-08-2023 *\/\n.elementor-heading-title{padding:0;margin:0;line-height:1}.elementor-widget-heading .elementor-heading-title[class*=elementor-size-]>a{color:inherit;font-size:inherit;line-height:inherit}.elementor-widget-heading .elementor-heading-title.elementor-size-small{font-size:15px}.elementor-widget-heading .elementor-heading-title.elementor-size-medium{font-size:19px}.elementor-widget-heading .elementor-heading-title.elementor-size-large{font-size:29px}.elementor-widget-heading .elementor-heading-title.elementor-size-xl{font-size:39px}.elementor-widget-heading .elementor-heading-title.elementor-size-xxl{font-size:59px}<\/style><h2 class=\"elementor-heading-title elementor-size-default\">Einer der n\u00fctzlichsten SQL-Befehle f\u00fcr Datenanalysten ist SQL GROUP BY. Er erm\u00f6glicht es, auf einfache Weise erweiterte Statistiken aus Kategorien zu erstellen. Dies ist einer der 10 Befehle, die du am h\u00e4ufigsten verwenden wirst.<\/h2>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-26bbb00 e-flex e-con-boxed e-con\" data-id=\"26bbb00\" data-element_type=\"container\" data-settings=\"{&quot;content_width&quot;:&quot;boxed&quot;}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-b362c7f elementor-widget elementor-widget-text-editor\" data-id=\"b362c7f\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<style>\/*! elementor - v3.15.0 - 02-08-2023 *\/\n.elementor-widget-text-editor.elementor-drop-cap-view-stacked .elementor-drop-cap{background-color:#69727d;color:#fff}.elementor-widget-text-editor.elementor-drop-cap-view-framed .elementor-drop-cap{color:#69727d;border:3px solid;background-color:transparent}.elementor-widget-text-editor:not(.elementor-drop-cap-view-default) .elementor-drop-cap{margin-top:8px}.elementor-widget-text-editor:not(.elementor-drop-cap-view-default) .elementor-drop-cap-letter{width:1em;height:1em}.elementor-widget-text-editor .elementor-drop-cap{float:left;text-align:center;line-height:1;font-size:50px}.elementor-widget-text-editor .elementor-drop-cap-letter{display:inline-block}<\/style>\t\t\t\t<p>Die St\u00e4rken von <a href=\"https:\/\/www.microsoft.com\/en-us\/sql-server\/sql-server-downloads\">SQL<\/a> sind unbestritten. Diese Sprache bietet ein unvergleichliches Abstraktionsniveau, um gro\u00dfe Informationsmengen zu analysieren. Unabh\u00e4ngig von der verwendeten Datenbanksoftware (MySQL, Ingres, Oracle Database, Microsoft SQL Server, PostgreSQL, SQLite, Firebird&#8230;) wei\u00df der <a href=\"https:\/\/datascientest.com\/de\/weiterbildung-data-analyst\">Datenanalyst<\/a>, dass er das gew\u00fcnschte Ergebnis erh\u00e4lt, ohne die genaue Logik programmieren zu m\u00fcssen.<\/p><p>\u00a0<\/p><p>\ud83d\udca1Auch interessant:<\/p><table dir=\"ltr\" border=\"1\" cellspacing=\"0\" cellpadding=\"0\"><colgroup><col width=\"268\" \/><\/colgroup><tbody><tr><td data-sheets-value=\"{&quot;1&quot;:2,&quot;2&quot;:&quot;SQL Joins&quot;}\" data-sheets-hyperlink=\"https:\/\/datascientest.com\/de\/alles-uber-sql-joins-verstehen\"><a class=\"in-cell-link\" href=\"https:\/\/datascientest.com\/de\/alles-uber-sql-joins-verstehen\" target=\"_blank\" rel=\"noopener\">SQL Joins<\/a><\/td><\/tr><tr><td data-sheets-value=\"{&quot;1&quot;:2,&quot;2&quot;:&quot;SQL Count Tutorial&quot;}\" data-sheets-hyperlink=\"https:\/\/datascientest.com\/de\/sql-count-unser-tutorial\"><a class=\"in-cell-link\" href=\"https:\/\/datascientest.com\/de\/sql-count-unser-tutorial\" target=\"_blank\" rel=\"noopener\">SQL Count Tutorial<\/a><\/td><\/tr><tr><td data-sheets-value=\"{&quot;1&quot;:2,&quot;2&quot;:&quot;SQL Datei \u00f6ffnen&quot;}\" data-sheets-hyperlink=\"https:\/\/datascientest.com\/de\/sql-datei-oeffnen-unser-tutorial\"><a class=\"in-cell-link\" href=\"https:\/\/datascientest.com\/de\/sql-datei-oeffnen-unser-tutorial\" target=\"_blank\" rel=\"noopener\">SQL Datei \u00f6ffnen<\/a><\/td><\/tr><tr><td data-sheets-value=\"{&quot;1&quot;:2,&quot;2&quot;:&quot;SQL vs. NOSQL&quot;}\" data-sheets-hyperlink=\"https:\/\/datascientest.com\/de\/sql-vs-nosql-unterschiede-anwendungen-vor-und-nachteile\"><a class=\"in-cell-link\" href=\"https:\/\/datascientest.com\/de\/sql-vs-nosql-unterschiede-anwendungen-vor-und-nachteile\" target=\"_blank\" rel=\"noopener\">SQL vs. NOSQL<\/a><\/td><\/tr><tr><td data-sheets-value=\"{&quot;1&quot;:2,&quot;2&quot;:&quot;noSQL nicht relationale Datenbanken&quot;}\" data-sheets-hyperlink=\"https:\/\/datascientest.com\/de\/no-sql-nicht-relationale-datenbanken\"><a class=\"in-cell-link\" href=\"https:\/\/datascientest.com\/de\/no-sql-nicht-relationale-datenbanken\" target=\"_blank\" rel=\"noopener\">noSQL nicht relationale Datenbanken<\/a><\/td><\/tr><tr><td data-sheets-value=\"{&quot;1&quot;:2,&quot;2&quot;:&quot;Alles \u00fcber SQL&quot;}\" data-sheets-hyperlink=\"https:\/\/datascientest.com\/de\/sql-alles-uber-die-datenbanksprache\"><a class=\"in-cell-link\" href=\"https:\/\/datascientest.com\/de\/sql-alles-uber-die-datenbanksprache\" target=\"_blank\" rel=\"noopener\">Alles \u00fcber SQL<\/a><\/td><\/tr><\/tbody><\/table>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-778dfc9 e-flex e-con-boxed e-con\" data-id=\"778dfc9\" data-element_type=\"container\" data-settings=\"{&quot;content_width&quot;:&quot;boxed&quot;}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-b606eaa elementor-widget elementor-widget-heading\" data-id=\"b606eaa\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">Wie gruppiert man die Informationen in einer Datenbank?<\/h3>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-1d478c6 elementor-widget elementor-widget-text-editor\" data-id=\"1d478c6\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p>Wenn es einen besonders wichtigen und n\u00fctzlichen Befehl gibt, dann ist es SQL GROUP BY. Er gruppiert Informationen aus einer Datenbank in einer bestimmten Spalte, von der aus du statistische Informationen erhalten kannst: Summe, Maximum, Minimum, Durchschnitt, etc.<\/p><p>Um dieses Konzept besser zu verstehen, ist es am einfachsten, von einem Beispiel auszugehen. Hier ist ein Auszug aus einer Tabelle namens &#8222;Personal&#8220;.<\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-1073908 elementor-widget elementor-widget-html\" data-id=\"1073908\" data-element_type=\"widget\" data-widget_type=\"html.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<style type=\"text\/css\">\r\n.tg  {border-collapse:collapse;border-spacing:0;}\r\n.tg td{border-color:black;border-style:solid;border-width:1px;font-family:Arial, sans-serif;font-size:14px;\r\n  overflow:hidden;padding:10px 5px;word-break:normal;}\r\n.tg th{border-color:black;border-style:solid;border-width:1px;font-family:Arial, sans-serif;font-size:14px;\r\n  font-weight:normal;overflow:hidden;padding:10px 5px;word-break:normal;}\r\n.tg .tg-8a1x{background-color:#6665cd;color:#efefef;font-family:Tahoma, Geneva, sans-serif !important;font-size:20px;\r\n  font-weight:bold;text-align:center;vertical-align:top}\r\n.tg .tg-r3ey{font-family:Tahoma, Geneva, sans-serif !important;font-size:100%;text-align:center;vertical-align:top}\r\n<\/style>\r\n<table class=\"tg\" style=\"undefined;table-layout: fixed; width: 300px\">\r\n<colgroup>\r\n<col style=\"width: 100px\">\r\n<col style=\"width: 100px\">\r\n<col style=\"width: 100px\">\r\n<\/colgroup>\r\n<thead>\r\n  <tr>\r\n    <th class=\"tg-8a1x\">Name<\/th>\r\n    <th class=\"tg-8a1x\">Abteilung<\/th>\r\n    <th class=\"tg-8a1x\">Gehalt<\/th>\r\n  <\/tr>\r\n<\/thead>\r\n<tbody>\r\n  <tr>\r\n    <td class=\"tg-r3ey\">Paul<\/td>\r\n    <td class=\"tg-r3ey\">Finanzen<\/td>\r\n    <td class=\"tg-r3ey\">3 000<\/td>\r\n  <\/tr>\r\n  <tr>\r\n    <td class=\"tg-r3ey\">Ray<\/td>\r\n    <td class=\"tg-r3ey\">Verkauf<\/td>\r\n    <td class=\"tg-r3ey\">2 500<\/td>\r\n  <\/tr>\r\n  <tr>\r\n    <td class=\"tg-r3ey\">Julia<\/td>\r\n    <td class=\"tg-r3ey\">Finanzen<\/td>\r\n    <td class=\"tg-r3ey\">3 200<\/td>\r\n  <\/tr>\r\n  <tr>\r\n    <td class=\"tg-r3ey\">Dan<\/td>\r\n    <td class=\"tg-r3ey\">Marketing<\/td>\r\n    <td class=\"tg-r3ey\">4 300<\/td>\r\n  <\/tr>\r\n  <tr>\r\n    <td class=\"tg-r3ey\">Josie<\/td>\r\n    <td class=\"tg-r3ey\">Verkauf<\/td>\r\n    <td class=\"tg-r3ey\">2 200<\/td>\r\n  <\/tr>\r\n  <tr>\r\n    <td class=\"tg-r3ey\">Donna<\/td>\r\n    <td class=\"tg-r3ey\">Finanzen<\/td>\r\n    <td class=\"tg-r3ey\">2 700<\/td>\r\n  <\/tr>\r\n<\/tbody>\r\n<\/table>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-2498844 elementor-widget elementor-widget-text-editor\" data-id=\"2498844\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p>Wenn es einen besonders wichtigen und n\u00fctzlichen Befehl gibt, dann ist es GROUP BY. Er gruppiert Informationen aus einer Datenbank in einer bestimmten Spalte, von der aus du statistische Informationen erhalten kannst: Summe, Maximum, Minimum, Durchschnitt, etc.<\/p><p>Um dieses Konzept besser zu verstehen, ist es am einfachsten, von einem Beispiel auszugehen. Hier ist ein Auszug aus einer Tabelle namens &#8222;Personal&#8220;.<\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-d2e407a elementor-widget elementor-widget-text-editor\" data-id=\"d2e407a\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p>In diesem Beispiel gruppieren wir die Tabelle nach der Spalte Abteilung und fragen nach der Summe der Geh\u00e4lter f\u00fcr jede dieser Abteilungen.<\/p><p>Wir w\u00fcrden als Antwort &#8211; bei der oben angegebenen Stichprobe &#8211; erhalten :<\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-e0cd6e9 elementor-widget elementor-widget-html\" data-id=\"e0cd6e9\" data-element_type=\"widget\" data-widget_type=\"html.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<style type=\"text\/css\">\r\n.tg  {border-collapse:collapse;border-spacing:0;}\r\n.tg td{border-color:black;border-style:solid;border-width:1px;font-family:Arial, sans-serif;font-size:14px;\r\n  overflow:hidden;padding:10px 5px;word-break:normal;}\r\n.tg th{border-color:black;border-style:solid;border-width:1px;font-family:Arial, sans-serif;font-size:14px;\r\n  font-weight:normal;overflow:hidden;padding:10px 5px;word-break:normal;}\r\n.tg .tg-r3ey{font-family:Tahoma, Geneva, sans-serif !important;font-size:100%;text-align:center;vertical-align:top}\r\n<\/style>\r\n<table class=\"tg\" style=\"undefined;table-layout: fixed; width: 200px\">\r\n<colgroup>\r\n<col style=\"width: 100px\">\r\n<col style=\"width: 100px\">\r\n<\/colgroup>\r\n<thead>\r\n  <tr>\r\n    <th class=\"tg-r3ey\">Finanzen<\/th>\r\n    <th class=\"tg-r3ey\">8 900<\/th>\r\n  <\/tr>\r\n<\/thead>\r\n<tbody>\r\n  <tr>\r\n    <td class=\"tg-r3ey\">Marketing<\/td>\r\n    <td class=\"tg-r3ey\">4 300<\/td>\r\n  <\/tr>\r\n  <tr>\r\n    <td class=\"tg-r3ey\">Verkauf<\/td>\r\n    <td class=\"tg-r3ey\">4 700<\/td>\r\n  <\/tr>\r\n<\/tbody>\r\n<\/table>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-af7ebde e-flex e-con-boxed e-con\" data-id=\"af7ebde\" data-element_type=\"container\" data-settings=\"{&quot;content_width&quot;:&quot;boxed&quot;}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-709b324 elementor-widget elementor-widget-heading\" data-id=\"709b324\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">Comment utiliser la clause HAVING BY ?<\/h3>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-a16af50 elementor-widget elementor-widget-text-editor\" data-id=\"a16af50\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p>HAVING BY erg\u00e4nzt den Befehl GROUP BY, indem es die M\u00f6glichkeit er\u00f6ffnet, eine Bedingung anzugeben. So wollen wir im folgenden Beispiel den Durchschnitt der Geh\u00e4lter (die Funktion AVG) anzeigen, aber nur, wenn dieser Durchschnitt gr\u00f6\u00dfer als 2500 ist:<\/p><p>SELECT Abteilung, AVG(Gehalt)<\/p><p>FROM Personal<\/p><p>GROUP BY Abteilung<\/p><p>HAVING AVG(Gehalt) &gt; 2500<\/p><p>ORDER BY Service;<\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-c8b3edb elementor-widget elementor-widget-text-editor\" data-id=\"c8b3edb\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p><span style=\"font-weight: 400;\">Wir erhalten als Ergebnis :<\/span><\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-ac24b2f elementor-widget elementor-widget-html\" data-id=\"ac24b2f\" data-element_type=\"widget\" data-widget_type=\"html.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<style type=\"text\/css\">\r\n.tg  {border-collapse:collapse;border-spacing:0;}\r\n.tg td{border-color:black;border-style:solid;border-width:1px;font-family:Arial, sans-serif;font-size:14px;\r\n  overflow:hidden;padding:10px 5px;word-break:normal;}\r\n.tg th{border-color:black;border-style:solid;border-width:1px;font-family:Arial, sans-serif;font-size:14px;\r\n  font-weight:normal;overflow:hidden;padding:10px 5px;word-break:normal;}\r\n.tg .tg-r3ey{font-family:Tahoma, Geneva, sans-serif !important;font-size:100%;text-align:center;vertical-align:top}\r\n<\/style>\r\n<table class=\"tg\" style=\"undefined;table-layout: fixed; width: 200px\">\r\n<colgroup>\r\n<col style=\"width: 100px\">\r\n<col style=\"width: 100px\">\r\n<\/colgroup>\r\n<thead>\r\n  <tr>\r\n    <th class=\"tg-r3ey\">Finanzen<\/th>\r\n    <th class=\"tg-r3ey\">2 967<\/th>\r\n  <\/tr>\r\n<\/thead>\r\n<tbody>\r\n  <tr>\r\n    <td class=\"tg-r3ey\">Marketing<\/td>\r\n    <td class=\"tg-r3ey\">4 300<\/td>\r\n  <\/tr>\r\n<\/tbody>\r\n<\/table>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-c2f1fe5 elementor-widget elementor-widget-text-editor\" data-id=\"c2f1fe5\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p><span style=\"font-weight: 400;\">So geht&#8217;s! So einfach ist das. Die Leichtigkeit, mit der solche Operationen durchgef\u00fchrt werden k\u00f6nnen, zeugt von den Qualit\u00e4ten der SQL-Sprache.<\/span><\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-9518e67 elementor-align-center button-principale elementor-widget elementor-widget-button\" data-id=\"9518e67\" data-element_type=\"widget\" data-widget_type=\"button.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<div class=\"elementor-button-wrapper\">\n\t\t\t<a class=\"elementor-button elementor-button-link elementor-size-sm elementor-animation-grow\" href=\"https:\/\/datascientest.com\/de\/unsere-aus-und-weiterbildungen\">\n\t\t\t\t\t\t<span class=\"elementor-button-content-wrapper\">\n\t\t\t\t\t\t<span class=\"elementor-button-text\">SQL lernen<\/span>\n\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-7d628d4 elementor-widget elementor-widget-html\" data-id=\"7d628d4\" data-element_type=\"widget\" data-widget_type=\"html.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<script type=\"application\/ld+json\">.\n{\n  \"@context\": \"https:\/\/schema.org\",\n  \"@type\": \"FAQPage\",\n  \"mainEntity\": [{{\n    \"@type\": \"Frage\",\n    \"name\": \"Wie verwende ich die HAVING BY-Klausel?\",\n    \"acceptedAnswer\": {\n      \"@type\": \"Answer\",\n      \"text\": \"HAVING BY erg\u00e4nzt den GROUP BY-Befehl, indem es die M\u00f6glichkeit bietet, eine Bedingung anzugeben.\"\n    }\n  },{\n    \"@type\": \"Question\",\n    \"name\": \"Wie kann man Informationen in einer Datenbank gruppieren?\",\n    \"acceptedAnswer\": {\n      \"@type\": \"Answer\",\n      \"text\": \"Wenn es einen besonders wichtigen und n\u00fctzlichen Befehl gibt, dann ist es GROUP BY. Er gruppiert Informationen aus einer Datenbank nach einer bestimmten Spalte, aus der man statistische Informationen abrufen kann: Summe, Maximum, Minimum, Durchschnitt usw.\".\n    }\n  }]\n}\n<\/script>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>Einer der n\u00fctzlichsten SQL-Befehle f\u00fcr Datenanalysten ist SQL GROUP BY. Er erm\u00f6glicht es, auf einfache Weise erweiterte Statistiken aus Kategorien zu erstellen. Dies ist einer der 10 Befehle, die du am h\u00e4ufigsten verwenden wirst. Die St\u00e4rken von SQL sind unbestritten. Diese Sprache bietet ein unvergleichliches Abstraktionsniveau, um gro\u00dfe Informationsmengen zu analysieren. Unabh\u00e4ngig von der verwendeten [&hellip;]<\/p>\n","protected":false},"author":67,"featured_media":177409,"comment_status":"open","ping_status":"open","sticky":false,"template":"elementor_theme","format":"standard","meta":{"content-type":"","inline_featured_image":false},"categories":[2454],"tags":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v21.7 (Yoast SEO v21.7) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>SQL GROUP BY: Der unverzichtbare SQL-Befehl f\u00fcr Data Analysts<\/title>\n<meta name=\"description\" content=\"SQL GROUP BY: Der unverzichtbare SQL-Befehl f\u00fcr Data Analysts ? 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