{"id":3383,"date":"2022-06-17T12:00:37","date_gmt":"2022-06-17T03:00:37","guid":{"rendered":"https:\/\/www.bold.ne.jp\/engineer-club\/?p=3383"},"modified":"2025-11-19T10:26:20","modified_gmt":"2025-11-19T01:26:20","slug":"sql-delete","status":"publish","type":"post","link":"https:\/\/www.bold.ne.jp\/engineer-club\/sql-delete","title":{"rendered":"SQL\u306eDELETE\u3068\u306f\uff1f\u30c7\u30fc\u30bf\u3092\u524a\u9664\u3059\u308bDELETE\u6587\u306e\u57fa\u672c\u7684\u306a\u4f7f\u3044\u65b9"},"content":{"rendered":"<p>SQL\u306eDELETE\u6587\u306f\u3001\u30c6\u30fc\u30d6\u30eb\u304b\u3089\u30c7\u30fc\u30bf\u3092\u524a\u9664\u3059\u308b\u3068\u304d\u306b\u4f7f\u3044\u307e\u3059\u3002\u672c\u8a18\u4e8b\u3067\u306f\u3001<strong><span class=\"f-marker-p\">DELETE\u6587\u306e\u57fa\u672c\u7684\u306a\u4f7f\u3044\u65b9<\/span><\/strong>\u3068\u3001<strong><span class=\"f-marker-p\">\u5b89\u5168\u306b\u30c7\u30fc\u30bf\u524a\u9664\u3092\u884c\u3046\u305f\u3081\u306e\u65b9\u6cd5<\/span><\/strong>\u3001\u6700\u5f8c\u306b<strong><span class=\"f-marker-p\">DELETE\u6587\u306e\u5fdc\u7528\u7684\u306a\u4f7f\u3044\u65b9<\/span><\/strong>\u306b\u3064\u3044\u3066\u89e3\u8aac\u3057\u307e\u3059\u3002<\/p>\n<div id=\"toc_container\" class=\"no_bullets\"><p class=\"toc_title\">\u76ee\u6b21<\/p><ul class=\"toc_list\"><li><a href=\"#SQLDELETE\">\uff11\uff0eSQL\u306eDELETE\u6587\u306e\u57fa\u672c\u7684\u306a\u4f7f\u3044\u65b9<\/a><ul><li><a href=\"#i\">\uff11-\uff11\uff0e\u7279\u5b9a\u306e\u6761\u4ef6\u3092\u6e80\u305f\u3059\u30c7\u30fc\u30bf\u3092\u524a\u9664\u3059\u308b<\/a><\/li><li><a href=\"#i-2\">\uff11-\uff12\uff0e\u5168\u30c7\u30fc\u30bf\u3092\u524a\u9664\u3059\u308b<\/a><\/li><\/ul><\/li><li><a href=\"#SQLDELETE-2\">\uff12\uff0eSQL\u306eDELETE\u6587\u3092\u5b89\u5168\u306b\u4f7f\u3046\u305f\u3081\u306e\u65b9\u6cd5<\/a><ul><li><a href=\"#SELECT\">\u30fbSELECT\u3068\u7d44\u307f\u5408\u308f\u305b\u3066\u4f7f\u3046<\/a><\/li><li><a href=\"#i-3\">\u30fb\u78ba\u5b9f\u6027\u306e\u9ad8\u3044\u6761\u4ef6\u3092\u3064\u3051\u308b<\/a><\/li><\/ul><\/li><li><a href=\"#DELETE\">\uff13\uff0eDELETE\u6587\u306e\u5fdc\u7528\u7684\u306a\u4f7f\u3044\u65b9<\/a><\/li><li><a href=\"#i-4\">\uff14\uff0e\u307e\u3068\u3081<\/a><\/li><\/ul><\/div>\n<h2><span id=\"SQLDELETE\">\uff11\uff0eSQL\u306eDELETE\u6587\u306e\u57fa\u672c\u7684\u306a\u4f7f\u3044\u65b9<\/span><\/h2>\n<p>\u307e\u305a\u306f<span>DELETE<\/span>\u6587\u306e\u57fa\u672c\u7684\u306a\u4f7f\u3044\u65b9\u306b\u3064\u3044\u3066\u3067\u3059\u3002<\/p>\n<h3><span id=\"i\"><span>\uff11-\uff11\uff0e<\/span>\u7279\u5b9a\u306e\u6761\u4ef6\u3092\u6e80\u305f\u3059\u30c7\u30fc\u30bf\u3092\u524a\u9664\u3059\u308b<\/span><\/h3>\n<p>\u00a0\u7279\u5b9a\u306e\u30c7\u30fc\u30bf\u3060\u3051\u3092\u524a\u9664\u3059\u308b\u3068\u304d\u306f\u3001<span>WHERE<\/span>\u53e5\u3092\u4f7f\u3063\u3066\u5bfe\u8c61\u306e\u30ec\u30b3\u30fc\u30c9\u3092\u6307\u5b9a\u3057\u307e\u3059\u3002<\/p>\n<pre class=\"prettyprint lang:default decode:true\">DELETE FROM [\u30c6\u30fc\u30d6\u30eb\u540d]\u3000WHERE [\u6761\u4ef6];<\/pre>\n<p>DELETE\u6587\u3067\u4f7f\u7528\u3059\u308b<span>WHERE<\/span>\u53e5\u306e\u8003\u3048\u65b9\u306f\u3001<span>SELECT<\/span>\u6587\u3067\u4f7f\u7528\u3059\u308b<span>WHERE<\/span>\u53e5\u306e\u8003\u3048\u65b9\u3068\u540c\u3058\u3067\u3059\u3002<\/p>\n<p>(\u4f8b) user\u30c6\u30fc\u30d6\u30eb\u306e <span>id <\/span>\u304c <span>5 <\/span>\u306e\u30c7\u30fc\u30bf\u3092\u524a\u9664\u3059\u308b\u5834\u5408<\/p>\n<pre class=\"prettyprint lang:default decode:true\">DELETE FROM user WHERE id = 5;<\/pre>\n<h3><span id=\"i-2\">\uff11-\uff12\uff0e\u5168\u30c7\u30fc\u30bf\u3092\u524a\u9664\u3059\u308b<\/span><\/h3>\n<p>\u30c6\u30fc\u30d6\u30eb\u306e\u30c7\u30fc\u30bf\u3092\u5168\u3066\u524a\u9664\u3059\u308b\u3068\u304d\u306f\u3001<span>DELETE FROM<\/span>\u306e\u5f8c\u306b\u30c6\u30fc\u30d6\u30eb\u540d\u3092\u66f8\u304f\u3060\u3051\u3067\u3059\u3002<\/p>\n<pre class=\"prettyprint lang:default decode:true\">DELETE FROM [\u30c6\u30fc\u30d6\u30eb\u540d];<\/pre>\n<p>\u3053\u306e\u30b3\u30de\u30f3\u30c9\u3092\u6295\u3052\u308b\u3068\u3001\u6307\u5b9a\u3057\u305f\u30c6\u30fc\u30d6\u30eb\u306e\u5168\u3066\u306e\u30c7\u30fc\u30bf\u3092\u524a\u9664\u3057\u307e\u3059\u3002<\/p>\n<p>(\u4f8b) user\u30c6\u30fc\u30d6\u30eb\u5185\u306e\u5168\u30c7\u30fc\u30bf\u3092\u524a\u9664\u3059\u308b\u5834\u5408<\/p>\n<pre class=\"prettyprint lang:default decode:true\">DELETE FROM user;<\/pre>\n<h2><span id=\"SQLDELETE-2\">\uff12\uff0eSQL\u306eDELETE\u6587\u3092\u5b89\u5168\u306b\u4f7f\u3046\u305f\u3081\u306e\u65b9\u6cd5<\/span><\/h2>\n<p>\u3053\u3053\u307e\u3067\u898b\u3066\u304d\u305f\u3088\u3046\u306b<span>DELETE<\/span>\u306f\u30c7\u30fc\u30bf\u3092\u524a\u9664\u3059\u308b\u30b3\u30de\u30f3\u30c9\u3067\u3059\u3002\u305d\u306e\u305f\u3081\u3001\u4f7f\u7528\u306b\u306f\u7d30\u5fc3\u306e\u6ce8\u610f\u3092\u6255\u3044\u307e\u3057\u3087\u3046\u3002\u3053\u3053\u3067\u306f\u3001\u3088\u308a\u5b89\u5168\u306b\u30c7\u30fc\u30bf\u524a\u9664\u3092\u884c\u3046\u305f\u3081\u306e\u65b9\u6cd5\u306b\u3064\u3044\u3066\u89e3\u8aac\u3057\u307e\u3059\u3002<\/p>\n<h3><span id=\"SELECT\"><strong><span class=\"f-marker-p\">\u30fbSELECT\u3068\u7d44\u307f\u5408\u308f\u305b\u3066\u4f7f\u3046<\/span><\/strong><\/span><\/h3>\n<p>DELETE\u3092\u304b\u3051\u308b\u524d\u306b\u3001\u307e\u305a<span>SELECT<\/span>\u3067\u53d6\u5f97\u3057\u305f\u7d50\u679c\u3092\u78ba\u8a8d\u3057\u307e\u3057\u3087\u3046\u3002\u53d6\u5f97\u7d50\u679c\u3092\u78ba\u8a8d\u5f8c\u3001\u554f\u984c\u304c\u306a\u3051\u308c\u3070<span>DELETE<\/span>\u3092\u304b\u3051\u308b\u3088\u3046\u306b\u3057\u307e\u3057\u3087\u3046\u3002<\/p>\n<h3><span id=\"i-3\"><strong><span class=\"f-marker-y\">\u30fb\u78ba\u5b9f\u6027\u306e\u9ad8\u3044\u6761\u4ef6\u3092\u3064\u3051\u308b<\/span><\/strong><\/span><\/h3>\n<p>\u524a\u9664\u5bfe\u8c61\u306e\u30c7\u30fc\u30bf\u306e\u307f\u3092\u524a\u9664\u3059\u308b\u305f\u3081\u306b\u3001<span>DELETE<\/span>\u3092\u304b\u3051\u308b\u969b\u306f\u6975\u529b\u6761\u4ef6\u3092\u7d5e\u308a\u8fbc\u3080\u3068\u3088\u308a\u5b89\u5168\u306b\u30c7\u30fc\u30bf\u524a\u9664\u304c\u884c\u3048\u307e\u3059\u3002\u4f8b\u3048\u3070\u3001<span>user<\/span>\u30c6\u30fc\u30d6\u30eb\u306e<span>id<\/span>\u304c<span>3<\/span>\u3001<span>userName<\/span>\u304c<span>\u2018user03\u2019<\/span>\u306e\u30c7\u30fc\u30bf\u3092\u524a\u9664\u3057\u305f\u3044\u5834\u5408\u3001<span>id<\/span>\u304b<span>userName<\/span>\u306e\u3069\u3061\u3089\u304b\u4e00\u65b9\u306e\u307f\u3067\u30c7\u30fc\u30bf\u3092\u7d5e\u308a\u8fbc\u3080\u306e\u3067\u306f\u306a\u304f\u3001<span>id<\/span>\u3068<span>userName<\/span>\u3069\u3061\u3089\u3082\u4f7f\u3063\u3066\u6761\u4ef6\u3092\u7d5e\u308a\u8fbc\u307f\u307e\u3057\u3087\u3046\u3002<\/p>\n<p>(\u4f8b) user\u30c6\u30fc\u30d6\u30eb\u306e id\u304c<span>3<\/span>\u3001<span>userName<\/span>\u304c<span>\u2018user03\u2019<\/span>\u306e\u30c7\u30fc\u30bf\u3092\u524a\u9664\u3059\u308b\u5834\u5408<\/p>\n<pre class=\"prettyprint lang:default decode:true\">DELETE FROM user WHERE id = 3 AND username = \u2018user03\u2019;<\/pre>\n<p>\u307e\u305f\u3001\u4f8b\u3048\u3070\u30c7\u30fc\u30bf\u304c<span>1<\/span>\u4ef6\u3057\u304b\u524a\u9664\u3055\u308c\u306a\u3044\u3053\u3068\u304c\u78ba\u5b9a\u3057\u3066\u3044\u308b\u5834\u5408\u306f\u3001\u4ee5\u4e0b\u306e\u3088\u3046\u306b<span>LIMIT<\/span>\u3092\u7528\u3044\u308b\u3068\u3001\u4eee\u306b\u6761\u4ef6\u30df\u30b9\u3067\u5168\u524a\u9664\u3068\u306a\u3063\u3066\u3057\u307e\u3063\u305f\u5834\u5408\u3067\u3082\u3001\u524a\u9664\u30c7\u30fc\u30bf\u4ef6\u6570\u3092<span>1<\/span>\u4ef6\u306b\u6291\u3048\u308b\u3053\u3068\u304c\u51fa\u6765\u307e\u3059\u3002<\/p>\n<p>(\u4f8b) \u524a\u9664\u5bfe\u8c61\u30c7\u30fc\u30bf\uff08user\u30c6\u30fc\u30d6\u30eb\u306e id\u304c<span>3<\/span>\u3001<span>userName<\/span>\u304c<span>\u2018user03\u2019<\/span>\u306e\u30c7\u30fc\u30bf\uff09\u306e\u4ef6\u6570\u304c1\u4ef6\u306e\u5834\u5408<\/p>\n<pre class=\"prettyprint lang:default decode:true\">DELETE FROM user WHERE id = 3 AND username = \u2018user03\u2019 LIMIT 1;<\/pre>\n<h2><span id=\"DELETE\">\uff13\uff0eDELETE\u6587\u306e\u5fdc\u7528\u7684\u306a\u4f7f\u3044\u65b9<\/span><\/h2>\n<p>\u3053\u308c\u307e\u3067\u306f<span>DELETE<\/span>\u6587\u306e\u57fa\u672c\u7684\u306a\u4f7f\u3044\u65b9\u3001\u5b89\u5168\u306b\u30c7\u30fc\u30bf\u524a\u9664\u3092\u884c\u3046\u65b9\u6cd5\u306b\u3064\u3044\u3066\u89e3\u8aac\u3057\u3066\u304d\u307e\u3057\u305f\u3002\u3053\u3053\u3067\u306f<span>DELETE<\/span>\u6587\u306e\u5fdc\u7528\u7684\u306a\u4f7f\u3044\u65b9\u306b\u3064\u3044\u3066\u898b\u3066\u3044\u304d\u307e\u3057\u3087\u3046\u3002<\/p>\n<p><strong><span class=\"f-marker-w\">\u30fbwhere\u53e5\u306bLIKE\u53e5\u3092\u4f7f\u3046<\/span><\/strong><\/p>\n<p>SELECT\u6587\u3068\u540c\u3058\u3088\u3046\u306bDELETE\u6587\u3067\u3082LIKE\u53e5\u3092\u4f7f\u7528\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<br \/>\n(\u4f8b) user\u30c6\u30fc\u30d6\u30eb\u306e <span>userName <\/span>\u304c \u300cuser01\u300d\u3067\u59cb\u307e\u308b\u30ec\u30b3\u30fc\u30c9\u306e\u307f\u3092\u524a\u9664\u3059\u308b\u5834\u5408<\/p>\n<pre class=\"prettyprint lang:default decode:true\">DELETE FROM user WHERE userName LIKE \u2018user01%\u2019;<\/pre>\n<p><strong>\u30fb[\u88dc\u8db3] \u5168\u4ef6\u524a\u9664\u3059\u308b\u5834\u5408\u306f TRUNCATE\u6587 \u3092\u4f7f\u3046\u3053\u3068\u3082\u691c\u8a0e\u3059\u308b<\/strong><\/p>\n<p>\u30c7\u30fc\u30bf\u3092\u5168\u4ef6\u524a\u9664\u3059\u308b\u5834\u5408\u306f\u3001DELETE\u6587\u3067\u306f\u306a\u304fTRUNCATE\u6587\u3092\u4f7f\u3046\u3053\u3068\u3082\u691c\u8a0e\u3057\u307e\u3057\u3087\u3046\u3002DELETE\u6587\u3067\u30c7\u30fc\u30bf\u3092\u5168\u524a\u9664\u3059\u308b\u3088\u308aTRUNCATE\u6587\u3067\u30c7\u30fc\u30bf\u3092\u5168\u524a\u9664\u3059\u308b\u65b9\u304c\u3088\u308a\u901f\u304f\u524a\u9664\u51e6\u7406\u304c\u5b9f\u884c\u3067\u304d\u307e\u3059\u3002\u524a\u9664\u5bfe\u8c61\u306e\u30c7\u30fc\u30bf\u4ef6\u6570\u304c\u591a\u304f\u306a\u3063\u3066\u304f\u308b\u3068\u3001\u51e6\u7406\u901f\u5ea6\u306e\u5dee\u3082\u5927\u304d\u304f\u306a\u3063\u3066\u304d\u307e\u3059\u306e\u3067\u3001\u4ef6\u6570\u304c\u591a\u3044\u30c7\u30fc\u30bf\u3092\u5168\u524a\u9664\u3059\u308b\u5834\u5408\u306fTRUNCATE\u6587\u3092\u4f7f\u3046\u3053\u3068\u3092\u691c\u8a0e\u3057\u3066\u307f\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n<p>\u305f\u3060\u3057\u3001\u672c\u8a18\u4e8b\u3067\u306f\u7d30\u304b\u3044\u8aac\u660e\u306f\u7701\u304d\u307e\u3059\u304c\u3001\u300cDELETE\u6587\u3067\u306f\u30ed\u30fc\u30eb\u30d0\u30c3\u30af\u304c\u51fa\u6765\u308b\u304cTRUNCATE\u6587\u3000\u3067\u306f\u30ed\u30fc\u30eb\u30d0\u30c3\u30af\u304c\u51fa\u6765\u306a\u3044\u300d\u7b49\u3068\u3044\u3063\u305f\u9055\u3044\u3082\u3042\u308b\u306e\u3067\u3001\u7528\u9014\u306b\u5fdc\u3058\u3066\u4f7f\u3044\u5206\u3051\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<h2><span id=\"i-4\">\uff14\uff0e\u307e\u3068\u3081<\/span><\/h2>\n<p>\u4ee5\u4e0a\u3001DELETE\u6587\u306e\u4f7f\u3044\u65b9\u306b\u3064\u3044\u3066\u89e3\u8aac\u3057\u307e\u3057\u305f\u3002\u8aa4\u3063\u3066\u5927\u5207\u306a\u30c7\u30fc\u30bf\u3092\u524a\u9664\u3057\u3066\u3057\u307e\u3063\u305f\u3002\u3002\u3002\u306a\u3069\u3068\u306a\u3089\u306a\u3044\u3088\u3046\u306b\u6ce8\u610f\u3057\u3066\u6271\u3044\u307e\u3057\u3087\u3046\u3002\u5b89\u5168\u306b\u30c7\u30fc\u30bf\u524a\u9664\u3092\u884c\u3046\u305f\u3081\u306b\u3082\u307e\u305a\u306f\u57fa\u672c\u3092\u62bc\u3055\u3048\u3066\u304b\u3089\u5fdc\u7528\u7684\u306a\u4f7f\u3044\u65b9\u3082\u30de\u30b9\u30bf\u30fc\u3057\u3066\u3044\u304d\u307e\u3057\u3087\u3046\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>SQL\u306eDELETE\u6587\u306f\u3001\u30c6\u30fc\u30d6\u30eb\u304b\u3089\u30c7\u30fc\u30bf\u3092\u524a\u9664\u3059\u308b\u3068\u304d\u306b\u4f7f\u3044\u307e\u3059\u3002\u672c\u8a18\u4e8b\u3067\u306f\u3001DELETE\u6587\u306e\u57fa\u672c\u7684\u306a\u4f7f\u3044\u65b9\u3068\u3001\u5b89\u5168\u306b\u30c7\u30fc\u30bf\u524a\u9664\u3092\u884c\u3046\u305f\u3081\u306e\u65b9\u6cd5\u3001\u6700\u5f8c\u306bDELETE\u6587\u306e\u5fdc\u7528\u7684\u306a\u4f7f\u3044\u65b9\u306b\u3064\u3044\u3066\u89e3\u8aac\u3057\u307e\u3059\u3002 \u76ee\u6b21\uff11\uff0eSQ [&hellip;]<\/p>\n","protected":false},"author":21,"featured_media":3385,"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\/3383"}],"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=3383"}],"version-history":[{"count":8,"href":"https:\/\/www.bold.ne.jp\/engineer-club\/wp-json\/wp\/v2\/posts\/3383\/revisions"}],"predecessor-version":[{"id":6089,"href":"https:\/\/www.bold.ne.jp\/engineer-club\/wp-json\/wp\/v2\/posts\/3383\/revisions\/6089"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.bold.ne.jp\/engineer-club\/wp-json\/wp\/v2\/media\/3385"}],"wp:attachment":[{"href":"https:\/\/www.bold.ne.jp\/engineer-club\/wp-json\/wp\/v2\/media?parent=3383"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.bold.ne.jp\/engineer-club\/wp-json\/wp\/v2\/categories?post=3383"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}