{"id":3415,"date":"2022-06-27T21:30:54","date_gmt":"2022-06-27T12:30:54","guid":{"rendered":"https:\/\/www.bold.ne.jp\/engineer-club\/?p=3415"},"modified":"2025-11-19T10:30:05","modified_gmt":"2025-11-19T01:30:05","slug":"sql-truncate","status":"publish","type":"post","link":"https:\/\/www.bold.ne.jp\/engineer-club\/sql-truncate","title":{"rendered":"SQL\u306eTRUNCATE\u3068\u306f\uff1f\u5168\u3066\u306e\u30c7\u30fc\u30bf\u3092\u524a\u9664\u3059\u308bTRUNCATE\u6587\u306e\u4f7f\u3044\u65b9"},"content":{"rendered":"<p>TRUNCATE\u6587\u306f\u3001<strong>\u30c6\u30fc\u30d6\u30eb\u304b\u3089\u30c7\u30fc\u30bf\u3092\u5168\u524a\u9664\u3059\u308b\u3068\u304d\u306b\u4f7f\u3044\u307e\u3059<\/strong>\u3002<\/p>\n<p>\u672c\u8a18\u4e8b\u3067\u306f\u3001TRUNCATE\u6587\u306e\u4f7f\u3044\u65b9\u3001\u307e\u305f\u3001<span>TRUNCATE<\/span>\u6587\u3068<span>DELETE<\/span>\u6587\u306e\u9055\u3044\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=\"#SQLTRUNCATE\">\uff11\uff0eSQL\u306eTRUNCATE\u6587\u306e\u4f7f\u3044\u65b9<\/a><\/li><li><a href=\"#TRUNCATEDELETE\">\uff12\uff0eTRUNCATE\u6587\u3068DELETE\u6587\u306e\u9055\u3044<\/a><ul><li><a href=\"#i\">\u30fb\u6761\u4ef6\u6307\u5b9a\u306e\u53ef\u5426<\/a><\/li><li><a href=\"#i-2\">\u30fb\u51e6\u7406\u901f\u5ea6\u306e\u9055\u3044<\/a><\/li><li><a href=\"#i-3\">\u30fb\u30ed\u30fc\u30eb\u30d0\u30c3\u30af\u306e\u53ef\u5426<\/a><\/li><\/ul><\/li><li><a href=\"#i-4\">\uff13\uff0e\u307e\u3068\u3081<\/a><\/li><\/ul><\/div>\n<h2><span id=\"SQLTRUNCATE\">\uff11\uff0eSQL\u306eTRUNCATE\u6587\u306e\u4f7f\u3044\u65b9<\/span><\/h2>\n<p>TRUNCATE\u6587\u3092\u4f7f\u3046\u3053\u3068\u3067\u3001\u30c6\u30fc\u30d6\u30eb\u5185\u306e\u5168\u3066\u306e\u30ec\u30b3\u30fc\u30c9\u3092\u524a\u9664\u3059\u308b\u3053\u3068\u304c\u51fa\u6765\u307e\u3059\u3002\u7d30\u304b\u304f\u8a00\u3046\u3068\u30c6\u30fc\u30d6\u30eb\u3092\u524a\u9664\u3057\u3066\u518d\u4f5c\u6210\u3057\u307e\u3059\u3002\u57fa\u672c\u69cb\u6587\u306f\u4ee5\u4e0b\u306e\u901a\u308a\u3067\u3059\u3002<\/p>\n<pre class=\"prettyprint lang:default decode:true\">TRUNCATE TABLE [\u30c6\u30fc\u30d6\u30eb\u540d];<\/pre>\n<p>\u4f8b\u3048\u3070\u3001TRUNCATE\u6587\u3092\u4f7f\u3063\u3066\u3001\u300cuser\u300d\u30c6\u30fc\u30d6\u30eb\u5185\u306e\u5168\u3066\u306e\u30ec\u30b3\u30fc\u30c9\u3092\u524a\u9664\u3059\u308b\u5834\u5408\u306f\u4ee5\u4e0b\u306e\u901a\u308a\u3067\u3059\u3002<\/p>\n<p>\u4f8b) user\u30c6\u30fc\u30d6\u30eb\u5185\u306e\u30ec\u30b3\u30fc\u30c9\u3092\u5168\u524a\u9664\u3059\u308b\u5834\u5408<\/p>\n<pre class=\"prettyprint lang:default decode:true\">TRUNCATE TABLE user;<\/pre>\n<p>\u30c6\u30fc\u30d6\u30eb\u5185\u306e\u30ec\u30b3\u30fc\u30c9\u3092\u5168\u524a\u9664\u3059\u308b\u65b9\u6cd5\u306f\u3001TRUNCATE\u6587\u3092\u4f7f\u3046\u65b9\u6cd5\u4ee5\u5916\u306bDELETE\u6587\u3092\u4f7f\u3046\u65b9\u6cd5\u3082\u3042\u308a\u307e\u3059\u3002\u3061\u306a\u307f\u306bDELETE\u6587\u3092\u4f7f\u3063\u3066\u3001\u4f8b\u3048\u3070\u300cuser\u300d\u30c6\u30fc\u30d6\u30eb\u5185\u306e\u5168\u3066\u306e\u30ec\u30b3\u30fc\u30c9\u3092\u524a\u9664\u3059\u308b\u5834\u5408\u306f\u4ee5\u4e0b\u306e\u901a\u308a\u3067\u3059\u3002<\/p>\n<pre class=\"prettyprint lang:default decode:true\">DELETE FROM user;<\/pre>\n<p>\u305f\u3060\u3057TRUNCATE\u6587\u3068DELETE\u6587\u306b\u306f\u3044\u304f\u3064\u304b\u9055\u3044\u304c\u3042\u308a\u307e\u3059\u3002\u6b21\u306e\u7ae0\u3067\u306fTRUNCATE\u6587\u3068DELETE\u6587\u306e\u9055\u3044\u306b\u3064\u3044\u3066\u89e3\u8aac\u3057\u307e\u3059\u3002<\/p>\n<h2><span id=\"TRUNCATEDELETE\">\uff12\uff0eTRUNCATE\u6587\u3068<span>DELETE<\/span>\u6587\u306e\u9055\u3044<\/span><\/h2>\n<p>\u4e0a\u8ff0\u3057\u305f\u901a\u308a\u3001\u30c6\u30fc\u30d6\u30eb\u5185\u306e\u5168\u3066\u306e\u30ec\u30b3\u30fc\u30c9\u3092\u524a\u9664\u3059\u308b\u65b9\u6cd5\u3068\u3057\u3066\u306f\u3001TRUNCATE\u6587\u3067\u306f\u306a\u304fDELETE\u6587\u3092\u4f7f\u3046\u65b9\u6cd5\u3082\u3042\u308a\u307e\u3059\u304c\u3001TRUNCATE\u6587\u3068DELETE\u6587\u306b\u306f\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u9055\u3044\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<h3><span id=\"i\"><strong>\u30fb\u6761\u4ef6\u6307\u5b9a\u306e\u53ef\u5426<\/strong><\/span><\/h3>\n<p>DELETE\u6587\u3067\u306fWHERE\u53e5\u3092\u4f7f\u3063\u3066\u524a\u9664\u5bfe\u8c61\u306e\u30ec\u30b3\u30fc\u30c9\u3092\u6761\u4ef6\u6307\u5b9a\u3059\u308b\u3053\u3068\u304c\u51fa\u6765\u307e\u3059\u304c\u3001TRUNCATE\u6587\u3067\u306f\u6761\u4ef6\u6307\u5b9a\u3059\u308b\u3053\u3068\u304c\u51fa\u6765\u307e\u305b\u3093\u3002TRUNCATE\u6587\u3092\u4f7f\u3063\u3066\u30ec\u30b3\u30fc\u30c9\u3092\u524a\u9664\u3059\u308b\u5834\u5408\u306f\u5e38\u306b\u30c6\u30fc\u30d6\u30eb\u5185\u306e\u5168\u3066\u306e\u30ec\u30b3\u30fc\u30c9\u3092\u524a\u9664\u3057\u307e\u3059\u3002<\/p>\n<h3><span id=\"i-2\"><strong>\u30fb\u51e6\u7406\u901f\u5ea6\u306e\u9055\u3044<\/strong><\/span><\/h3>\n<p>\u30c6\u30fc\u30d6\u30eb\u5185\u306e\u30ec\u30b3\u30fc\u30c9\u3092\u5168\u524a\u9664\u3059\u308b\u5834\u5408\u3001DELETE\u6587\u3088\u308a\u3082TRUNCATE\u6587\u3092\u4f7f\u3046\u65b9\u304c\u3088\u308a\u9ad8\u901f\u3067\u524a\u9664\u3059\u308b\u3053\u3068\u304c\u51fa\u6765\u307e\u3059\u3002\u7279\u306b\u30c7\u30fc\u30bf\u91cf\u304c\u591a\u304f\u306a\u308b\u3068\u3088\u308a\u9855\u8457\u306b\u305d\u306e\u5dee\u304c\u751f\u3058\u307e\u3059\u3002<\/p>\n<h3><span id=\"i-3\"><strong>\u30fb\u30ed\u30fc\u30eb\u30d0\u30c3\u30af\u306e\u53ef\u5426<\/strong><\/span><\/h3>\n<p>DELETE\u6587\u3067\u306f\u30b3\u30df\u30c3\u30c8\u3057\u3066\u3044\u306a\u3051\u308c\u3070\u30ed\u30fc\u30eb\u30d0\u30c3\u30af\u53ef\u80fd\u3067\u3059\u3002TRUNCATE\u6587\u3067\u306f\u30ed\u30fc\u30eb\u30d0\u30c3\u30af\u3059\u308b\u3053\u3068\u304c\u51fa\u6765\u307e\u305b\u3093\u3002\u4ee5\u4e0a\u305d\u308c\u305e\u308c\u306e\u9055\u3044\u306b\u3064\u3044\u3066\u7c21\u5358\u306b\u8868\u306b\u307e\u3068\u3081\u308b\u3068\u4ee5\u4e0b\u306e\u901a\u308a\u3068\u306a\u308a\u307e\u3059\u3002<\/p>\n<table style=\"border-collapse: collapse; width: 100%; height: 96px;\">\n<tbody>\n<tr style=\"height: 24px;\">\n<td style=\"width: 33.3333%; height: 24px;\"><\/td>\n<td style=\"width: 33.3333%; height: 24px;\"><strong>TRUNCATE<\/strong><\/td>\n<td style=\"width: 33.3333%; height: 24px;\"><strong>DELETE<\/strong><\/td>\n<\/tr>\n<tr style=\"height: 24px;\">\n<td style=\"width: 33.3333%; height: 24px;\"><strong>\u6761\u4ef6\u6307\u5b9a<\/strong><\/td>\n<td style=\"width: 33.3333%; height: 24px;\">\u4e0d\u53ef<\/td>\n<td style=\"width: 33.3333%; height: 24px;\">\u53ef\u80fd<\/td>\n<\/tr>\n<tr style=\"height: 24px;\">\n<td style=\"width: 33.3333%; height: 24px;\"><strong>\u51e6\u7406\u901f\u5ea6<\/strong><\/td>\n<td style=\"width: 33.3333%; height: 24px;\">\u901f\u3044<\/td>\n<td style=\"width: 33.3333%; height: 24px;\">\u9045\u3044<\/td>\n<\/tr>\n<tr style=\"height: 24px;\">\n<td style=\"width: 33.3333%; height: 24px;\"><strong>\u30ed\u30fc\u30eb\u30d0\u30c3\u30af<\/strong><\/td>\n<td style=\"width: 33.3333%; height: 24px;\">\u4e0d\u53ef<\/td>\n<td style=\"width: 33.3333%; height: 24px;\">\u53ef\u80fd<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>TRUNCATE\u6587\u3068DELETE\u6587\u3067\u306f\u3053\u308c\u3089\u306e\u3088\u3046\u306a\u9055\u3044\u304c\u3042\u308b\u305f\u3081\u3001\u72b6\u6cc1\u306b\u5fdc\u3058\u3066\u4f7f\u3044\u5206\u3051\u308b\u3088\u3046\u306b\u3057\u307e\u3057\u3087\u3046\u3002<\/p>\n<h2><span id=\"i-4\">\uff13\uff0e\u307e\u3068\u3081<\/span><\/h2>\n<p>\u4ee5\u4e0a\u3001\u672c\u8a18\u4e8b\u3067\u306fTRUNCATE\u6587\u306e\u4f7f\u3044\u65b9\u3001TRUNCATE\u6587\u3068DELETE\u6587\u306e\u9055\u3044\u306b\u3064\u3044\u3066\u89e3\u8aac\u3057\u307e\u3057\u305f\u3002<\/p>\n<p>TRUNCATE\u6587\u306f\u4e00\u5ea6\u5b9f\u884c\u3059\u308b\u3068\u3001\u30c6\u30fc\u30d6\u30eb\u5185\u306e\u5168\u3066\u306e\u30c7\u30fc\u30bf\u304c\u524a\u9664\u3055\u308c\u3001\u30ed\u30fc\u30eb\u30d0\u30c3\u30af\u3082\u3067\u304d\u306a\u3044\u305f\u3081\u3001\u8aa4\u3063\u3066\u5927\u5207\u306a\u30c7\u30fc\u30bf\u3092\u524a\u9664\u3057\u3066\u3057\u307e\u3063\u305f\u3002\u3002\u3002\u3068\u306a\u3089\u306a\u3044\u3088\u3046\u3001\u7279\u306b\u6163\u308c\u306a\u3044\u3046\u3061\u306f\u7d30\u5fc3\u306e\u6ce8\u610f\u3092\u6255\u3063\u3066\u4f7f\u3046\u3088\u3046\u306b\u3057\u307e\u3057\u3087\u3046\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>TRUNCATE\u6587\u306f\u3001\u30c6\u30fc\u30d6\u30eb\u304b\u3089\u30c7\u30fc\u30bf\u3092\u5168\u524a\u9664\u3059\u308b\u3068\u304d\u306b\u4f7f\u3044\u307e\u3059\u3002 \u672c\u8a18\u4e8b\u3067\u306f\u3001TRUNCATE\u6587\u306e\u4f7f\u3044\u65b9\u3001\u307e\u305f\u3001TRUNCATE\u6587\u3068DELETE\u6587\u306e\u9055\u3044\u306b\u3064\u3044\u3066\u89e3\u8aac\u3057\u307e\u3059\u3002 \u76ee\u6b21\uff11\uff0eSQL\u306eTRUNCATE\u6587\u306e\u4f7f\u3044\u65b9 [&hellip;]<\/p>\n","protected":false},"author":21,"featured_media":3417,"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\/3415"}],"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=3415"}],"version-history":[{"count":7,"href":"https:\/\/www.bold.ne.jp\/engineer-club\/wp-json\/wp\/v2\/posts\/3415\/revisions"}],"predecessor-version":[{"id":6092,"href":"https:\/\/www.bold.ne.jp\/engineer-club\/wp-json\/wp\/v2\/posts\/3415\/revisions\/6092"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.bold.ne.jp\/engineer-club\/wp-json\/wp\/v2\/media\/3417"}],"wp:attachment":[{"href":"https:\/\/www.bold.ne.jp\/engineer-club\/wp-json\/wp\/v2\/media?parent=3415"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.bold.ne.jp\/engineer-club\/wp-json\/wp\/v2\/categories?post=3415"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}