{"id":4018,"date":"2023-06-10T12:00:17","date_gmt":"2023-06-10T03:00:17","guid":{"rendered":"https:\/\/www.bold.ne.jp\/engineer-club\/?p=4018"},"modified":"2025-11-19T11:11:21","modified_gmt":"2025-11-19T02:11:21","slug":"sql-max","status":"publish","type":"post","link":"https:\/\/www.bold.ne.jp\/engineer-club\/sql-max","title":{"rendered":"SQL\u306eMAX\u3068\u306f\uff1f\u6700\u5927\u5024\u3092\u53d6\u5f97\u3059\u308bMAX\u306e\u4f7f\u3044\u65b9"},"content":{"rendered":"<p>SQL\u3067<strong>\u6700\u5927\u5024\u3092\u53d6\u5f97\u3059\u308b\u5834\u5408\u306fMAX\u95a2\u6570\u3092\u4f7f\u7528<\/strong>\u3057\u307e\u3059\u3002\u672c\u8a18\u4e8b\u3067\u306f\u3001MAX\u95a2\u6570\u3092\u4f7f\u3063\u3066\u6700\u5927\u5024\u3092\u53d6\u5f97\u3059\u308b\u65b9\u6cd5\u306b\u3064\u3044\u3066\u89e3\u8aac\u3057\u307e\u3059\u3002\u307e\u305f\u3001\u4ee5\u4e0b\u306e\u30e6\u30fc\u30b6\u30fc\uff08<span>user<\/span>\uff09\u30c6\u30fc\u30d6\u30eb\u3092\u4f7f\u7528\u3057\u307e\u3059\u3002<\/p>\n<table style=\"border-collapse: collapse; width: 100%; height: 144px;\">\n<tbody>\n<tr style=\"height: 24px;\">\n<td style=\"width: 25%; height: 24px;\">ID<\/td>\n<td style=\"width: 25%; height: 24px;\">name<\/td>\n<td style=\"width: 25%; height: 24px;\">age<\/td>\n<td style=\"width: 25%; height: 24px;\">group_id<\/td>\n<\/tr>\n<tr style=\"height: 24px;\">\n<td style=\"width: 25%; height: 24px;\">1<\/td>\n<td style=\"width: 25%; height: 24px;\">User1<\/td>\n<td style=\"width: 25%; height: 24px;\">30<\/td>\n<td style=\"width: 25%; height: 24px;\">101<\/td>\n<\/tr>\n<tr style=\"height: 24px;\">\n<td style=\"width: 25%; height: 24px;\">2<\/td>\n<td style=\"width: 25%; height: 24px;\">User2<\/td>\n<td style=\"width: 25%; height: 24px;\">25<\/td>\n<td style=\"width: 25%; height: 24px;\">101<\/td>\n<\/tr>\n<tr style=\"height: 24px;\">\n<td style=\"width: 25%; height: 24px;\">3<\/td>\n<td style=\"width: 25%; height: 24px;\">User3<\/td>\n<td style=\"width: 25%; height: 24px;\">27<\/td>\n<td style=\"width: 25%; height: 24px;\">102<\/td>\n<\/tr>\n<tr style=\"height: 24px;\">\n<td style=\"width: 25%; height: 24px;\">4<\/td>\n<td style=\"width: 25%; height: 24px;\">User4<\/td>\n<td style=\"width: 25%; height: 24px;\">23<\/td>\n<td style=\"width: 25%; height: 24px;\">102<\/td>\n<\/tr>\n<tr style=\"height: 24px;\">\n<td style=\"width: 25%; height: 24px;\">5<\/td>\n<td style=\"width: 25%; height: 24px;\">User5<\/td>\n<td style=\"width: 25%; height: 24px;\">35<\/td>\n<td style=\"width: 25%; height: 24px;\">103<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<div id=\"toc_container\" class=\"no_bullets\"><p class=\"toc_title\">\u76ee\u6b21<\/p><ul class=\"toc_list\"><li><a href=\"#SQLMAX\">\uff11\uff0eSQL\u306eMAX\u95a2\u6570\u306e\u57fa\u672c\u7684\u306a\u4f7f\u3044\u65b9<\/a><\/li><li><a href=\"#SQLMAX-2\">\uff12\uff0eSQL\u306eMAX\u95a2\u6570\u306e\u5fdc\u7528\u7684\u306a\u4f7f\u3044\u65b9<\/a><ul><li><a href=\"#i\">\uff12-\uff11\uff0e\u30b0\u30eb\u30fc\u30d7\u5316\u3057\u3066\u6700\u5927\u5024\u3092\u53d6\u5f97\u3059\u308b<\/a><\/li><li><a href=\"#i-2\">\uff12-\uff12\uff0e\u6700\u5927\u5024\u306e\u30ec\u30b3\u30fc\u30c9\u3092\u53d6\u5f97\u3059\u308b<\/a><\/li><\/ul><\/li><li><a href=\"#i-3\">\uff13\uff0e\u307e\u3068\u3081<\/a><\/li><\/ul><\/div>\n<h2><span id=\"SQLMAX\">\uff11\uff0eSQL\u306eMAX\u95a2\u6570\u306e\u57fa\u672c\u7684\u306a\u4f7f\u3044\u65b9<\/span><\/h2>\n<p>\u305d\u308c\u3067\u306f\u307e\u305a<span>MAX<\/span>\u95a2\u6570\u306e\u57fa\u672c\u7684\u306a\u4f7f\u3044\u65b9\u306b\u3064\u3044\u3066\u898b\u3066\u3044\u304d\u307e\u3057\u3087\u3046\u3002<\/p>\n<p>\u57fa\u672c\u69cb\u6587\u306b\u3064\u3044\u3066\u306f\u4ee5\u4e0b\u306e\u901a\u308a\u3067\u3059\u3002<\/p>\n<pre class=\"prettyprint lang:default decode:true\">SELECT MAX(\u30ab\u30e9\u30e0\u540d) FROM \u30c6\u30fc\u30d6\u30eb\u540d;\r\n\r\n<\/pre>\n<p>\u4e0a\u8a18\u306e\u901a\u308a\u8a18\u8f09\u3059\u308b\u3053\u3068\u3067\u3001\u6307\u5b9a\u3057\u305f\u30c6\u30fc\u30d6\u30eb\u306e\u4e2d\u304b\u3089\u3001\u6307\u5b9a\u3057\u305f\u30ab\u30e9\u30e0\u306e\u6700\u5927\u5024\u3092\u53d6\u5f97\u3059\u308b\u3053\u3068\u304c\u51fa\u6765\u307e\u3059\u3002<\/p>\n<p>\u4f8b\u3068\u3057\u3066\u3001\u30e6\u30fc\u30b6\u30fc\uff08<span>user<\/span>\uff09\u30c6\u30fc\u30d6\u30eb\u304b\u3089\u5e74\u9f62\uff08<span>age<\/span>\uff09\u306e\u6700\u5927\u5024\u3092\u53d6\u5f97\u3059\u308b\u5834\u5408\u306f\u4ee5\u4e0b\u306e\u901a\u308a\u3068\u306a\u308a\u307e\u3059\u3002<\/p>\n<p>\u4f8b\uff09\u30e6\u30fc\u30b6\u30fc\uff08<span>user<\/span>\uff09\u30c6\u30fc\u30d6\u30eb\u304b\u3089\u5e74\u9f62\uff08<span>age<\/span>\uff09\u306e\u6700\u5927\u5024\u3092\u53d6\u5f97\u3059\u308b\u5834\u5408<\/p>\n<pre class=\"prettyprint lang:default decode:true\">SELECT MAX(age) FROM user;<\/pre>\n<p><strong><span class=\"f-marker-w\">\u25bd\u5b9f\u884c\u7d50\u679c<\/span><\/strong><\/p>\n<table style=\"border-collapse: collapse; width: 100%;\">\n<tbody>\n<tr>\n<td style=\"width: 100%;\">MAX(age)<\/td>\n<\/tr>\n<tr>\n<td style=\"width: 100%;\">35<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\u3053\u306e\u3088\u3046\u306b\u3057\u3066\u3001\u6307\u5b9a\u3057\u305f\u30ab\u30e9\u30e0\u306e\u6700\u5927\u5024\u3092\u53d6\u5f97\u3057\u307e\u3059\u3002\u4ee5\u4e0a\u304c<span>MAX<\/span>\u95a2\u6570\u306e\u57fa\u672c\u7684\u306a\u4f7f\u3044\u65b9\u3068\u306a\u308a\u307e\u3059\u3002\u305d\u308c\u3067\u306f\u6b21\u306b<span>MAX<\/span>\u95a2\u6570\u306e\u5fdc\u7528\u7684\u306a\u4f7f\u3044\u65b9\u306b\u3064\u3044\u3066\u898b\u3066\u3044\u304d\u307e\u3057\u3087\u3046\u3002<\/p>\n<h2><span id=\"SQLMAX-2\">\uff12\uff0eSQL\u306eMAX\u95a2\u6570\u306e\u5fdc\u7528\u7684\u306a\u4f7f\u3044\u65b9<\/span><\/h2>\n<p>\u305d\u308c\u3067\u306f<span>MAX<\/span>\u95a2\u6570\u306e\u5fdc\u7528\u7684\u306a\u4f7f\u3044\u65b9\u306b\u3064\u3044\u3066\u3067\u3059\u3002<\/p>\n<h3><span id=\"i\">\uff12-\uff11\uff0e\u30b0\u30eb\u30fc\u30d7\u5316\u3057\u3066\u6700\u5927\u5024\u3092\u53d6\u5f97\u3059\u308b<\/span><\/h3>\n<p>\u3067\u306f\u307e\u305a\u30b0\u30eb\u30fc\u30d7\u5316\u3057\u3066\u6700\u5927\u5024\u3092\u53d6\u5f97\u3059\u308b\u65b9\u6cd5\u306b\u3064\u3044\u3066\u898b\u3066\u3044\u304d\u307e\u3059\u3002\u30b0\u30eb\u30fc\u30d7\u5316\u3057\u3066\u3001\u30b0\u30eb\u30fc\u30d7\u3054\u3068\u306e\u6700\u5927\u5024\u3092\u53d6\u5f97\u3059\u308b\u306b\u306f<span>GROUP BY<\/span>\u53e5\u3092\u7528\u3044\u307e\u3059\u3002\u4f8b\u3068\u3057\u3066\u3001\u30e6\u30fc\u30b6\u30fc\uff08<span>user<\/span>\uff09\u30c6\u30fc\u30d6\u30eb\u304b\u3089\u30b0\u30eb\u30fc\u30d7<span>ID<\/span>\uff08<span>group_id<\/span>\uff09\u3054\u3068\u306b\u6700\u5e74\u9577\u3067\u3042\u308b\uff08\u5e74\u9f62<span>(age)<\/span>\u306e\u5024\u304c\u6700\u3082\u5927\u304d\u3044\uff09\u30ec\u30b3\u30fc\u30c9\u3092\u53d6\u5f97\u3059\u308b\u5834\u5408\u306f\u4ee5\u4e0b\u306e\u901a\u308a\u3068\u306a\u308a\u307e\u3059\u3002<\/p>\n<p>\u4f8b\uff09\u30e6\u30fc\u30b6\u30fc\uff08<span>user<\/span>\uff09\u30c6\u30fc\u30d6\u30eb\u304b\u3089\u30b0\u30eb\u30fc\u30d7<span>ID<\/span>\uff08<span>group_id<\/span>\uff09\u3054\u3068\u306b\u6700\u5e74\u9577\u3067\u3042\u308b\uff08\u5e74\u9f62<span>(age)<\/span>\u306e\u5024\u304c\u6700\u3082\u5927\u304d\u3044\uff09\u30ec\u30b3\u30fc\u30c9\u3092\u53d6\u5f97\u3059\u308b\u5834\u5408<\/p>\n<pre class=\"prettyprint lang:default decode:true\">SELECT group_id, MAX(age) FROM user GROUP BY group_id;<\/pre>\n<p><strong><span class=\"f-marker-w\">\u25bd\u5b9f\u884c\u7d50\u679c<\/span><\/strong><\/p>\n<table style=\"border-collapse: collapse; width: 100%;\">\n<tbody>\n<tr>\n<td style=\"width: 50%;\">group id<\/td>\n<td style=\"width: 50%;\">MAX(age)<\/td>\n<\/tr>\n<tr>\n<td style=\"width: 50%;\">101<\/td>\n<td style=\"width: 50%;\">30<\/td>\n<\/tr>\n<tr>\n<td style=\"width: 50%;\">102<\/td>\n<td style=\"width: 50%;\">27<\/td>\n<\/tr>\n<tr>\n<td style=\"width: 50%;\">103<\/td>\n<td style=\"width: 50%;\">35<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\u3053\u306e\u3088\u3046\u306b\u3057\u3066\u3001\u30b0\u30eb\u30fc\u30d7\u3054\u3068\u306e\u6700\u5927\u5024\u3092\u53d6\u5f97\u3057\u307e\u3059\u3002\u305d\u308c\u3067\u306f\u6b21\u306b\u6700\u5927\u5024\u306e\u30ec\u30b3\u30fc\u30c9\u3092\u53d6\u5f97\u3059\u308b\u65b9\u6cd5\u306b\u3064\u3044\u3066\u898b\u3066\u3044\u304d\u307e\u3059\u3002<\/p>\n<h3><span id=\"i-2\"><span>\uff12-\uff12\uff0e<\/span>\u6700\u5927\u5024\u306e\u30ec\u30b3\u30fc\u30c9\u3092\u53d6\u5f97\u3059\u308b<\/span><\/h3>\n<p>\u7279\u5b9a\u306e\u30ab\u30e9\u30e0\u306e\u5024\u304c\u6700\u5927\u5024\u3068\u306a\u308b\u30ec\u30b3\u30fc\u30c9\u3092\u53d6\u5f97\u3059\u308b\u5834\u5408\u306f\u5c11\u3057\u5de5\u592b\u304c\u5fc5\u8981\u3067\u3059\u3002\u4f8b\u3068\u3057\u3066\u3001\u30e6\u30fc\u30b6\u30fc\uff08<span>user<\/span>\uff09\u30c6\u30fc\u30d6\u30eb\u304b\u3089\u5e74\u9f62\uff08<span>age<\/span>\uff09\u304c\u6700\u5927\u5024\u3068\u306a\u308b\u30ec\u30b3\u30fc\u30c9\u3092\u53d6\u5f97\u3059\u308b\u5834\u5408\u306f\u4ee5\u4e0b\u306e\u901a\u308a\u3068\u306a\u308a\u307e\u3059\u3002<\/p>\n<p>\u4f8b\uff09\u30e6\u30fc\u30b6\u30fc\uff08<span>user<\/span>\uff09\u30c6\u30fc\u30d6\u30eb\u304b\u3089\u5e74\u9f62\uff08<span>age<\/span>\uff09\u304c\u6700\u5927\u5024\u3068\u306a\u308b\u30ec\u30b3\u30fc\u30c9\u3092\u53d6\u5f97\u3059\u308b\u5834\u5408<\/p>\n<pre class=\"prettyprint lang:default decode:true\">SELECT * FROM user WHERE age = (SELECT MAX(age) FROM user);\r\n\r\n<\/pre>\n<p><strong><span class=\"f-marker-w\">\u25bd\u5b9f\u884c\u7d50\u679c<\/span><\/strong><\/p>\n<table style=\"border-collapse: collapse; width: 100%;\">\n<tbody>\n<tr>\n<td style=\"width: 25%;\">ID<\/td>\n<td style=\"width: 25%;\">name<\/td>\n<td style=\"width: 25%;\">age<\/td>\n<td style=\"width: 25%;\">grouo id<\/td>\n<\/tr>\n<tr>\n<td style=\"width: 25%;\">5<\/td>\n<td style=\"width: 25%;\">User5<\/td>\n<td style=\"width: 25%;\">35<\/td>\n<td style=\"width: 25%;\">103<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\u3053\u306e\u3088\u3046\u306b\u3057\u3066\u3001\u7279\u5b9a\u306e\u30ab\u30e9\u30e0\u306e\u5024\u304c\u6700\u5927\u5024\u3068\u306a\u308b\u30ec\u30b3\u30fc\u30c9\u3092\u53d6\u5f97\u3057\u307e\u3059\u3002\u4ee5\u4e0a\u304c<span>MAX<\/span>\u95a2\u6570\u306e\u5fdc\u7528\u7684\u306a\u4f7f\u3044\u65b9\u3068\u306a\u308a\u307e\u3059\u3002<\/p>\n<h2><span id=\"i-3\">\uff13\uff0e\u307e\u3068\u3081<\/span><\/h2>\n<p>\u4ee5\u4e0a\u3001<span>SQL<\/span>\u3067<span>MAX<\/span>\u95a2\u6570\u3092\u7528\u3044\u3066\u6700\u5927\u5024\u3092\u53d6\u5f97\u3059\u308b\u65b9\u6cd5\u306b\u3064\u3044\u3066\u89e3\u8aac\u3057\u3066\u304d\u307e\u3057\u305f\u3002\u6700\u5927\u5024\u3068\u306a\u308b\u30c7\u30fc\u30bf\u3092\u53d6\u5f97\u3059\u308b\u5834\u5408\u306f\u662f\u975e\u53c2\u8003\u306b\u3057\u3066\u307f\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>SQL\u3067\u6700\u5927\u5024\u3092\u53d6\u5f97\u3059\u308b\u5834\u5408\u306fMAX\u95a2\u6570\u3092\u4f7f\u7528\u3057\u307e\u3059\u3002\u672c\u8a18\u4e8b\u3067\u306f\u3001MAX\u95a2\u6570\u3092\u4f7f\u3063\u3066\u6700\u5927\u5024\u3092\u53d6\u5f97\u3059\u308b\u65b9\u6cd5\u306b\u3064\u3044\u3066\u89e3\u8aac\u3057\u307e\u3059\u3002\u307e\u305f\u3001\u4ee5\u4e0b\u306e\u30e6\u30fc\u30b6\u30fc\uff08user\uff09\u30c6\u30fc\u30d6\u30eb\u3092\u4f7f\u7528\u3057\u307e\u3059\u3002 ID name age group_id [&hellip;]<\/p>\n","protected":false},"author":21,"featured_media":4020,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[17],"acf":[],"_links":{"self":[{"href":"https:\/\/www.bold.ne.jp\/engineer-club\/wp-json\/wp\/v2\/posts\/4018"}],"collection":[{"href":"https:\/\/www.bold.ne.jp\/engineer-club\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.bold.ne.jp\/engineer-club\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.bold.ne.jp\/engineer-club\/wp-json\/wp\/v2\/users\/21"}],"replies":[{"embeddable":true,"href":"https:\/\/www.bold.ne.jp\/engineer-club\/wp-json\/wp\/v2\/comments?post=4018"}],"version-history":[{"count":6,"href":"https:\/\/www.bold.ne.jp\/engineer-club\/wp-json\/wp\/v2\/posts\/4018\/revisions"}],"predecessor-version":[{"id":6132,"href":"https:\/\/www.bold.ne.jp\/engineer-club\/wp-json\/wp\/v2\/posts\/4018\/revisions\/6132"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.bold.ne.jp\/engineer-club\/wp-json\/wp\/v2\/media\/4020"}],"wp:attachment":[{"href":"https:\/\/www.bold.ne.jp\/engineer-club\/wp-json\/wp\/v2\/media?parent=4018"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.bold.ne.jp\/engineer-club\/wp-json\/wp\/v2\/categories?post=4018"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}