{"id":6475,"date":"2026-05-20T17:24:40","date_gmt":"2026-05-20T08:24:40","guid":{"rendered":"https:\/\/route-zero.com\/recruit\/?post_type=route&#038;p=6475"},"modified":"2026-10-20T17:24:48","modified_gmt":"2026-10-20T08:24:48","slug":"postgresql-update-from-join-safety","status":"publish","type":"route","link":"https:\/\/route-zero.com\/recruit\/route\/6475\/","title":{"rendered":"PostgreSQL\u306eUPDATE FROM\u3067\u5225\u30c6\u30fc\u30d6\u30eb\u306e\u5024\u3092\u66f4\u65b0"},"content":{"rendered":"<p>PostgreSQL\u3067\u5225\u30c6\u30fc\u30d6\u30eb\u306e\u5024\u3092\u4f7f\u3063\u3066\u66f4\u65b0\u3059\u308b\u306b\u306f\u3001UPDATE\u306e\u5f8c\u306b\u66f4\u65b0\u5148\u30c6\u30fc\u30d6\u30eb\u3001SET\u306b\u5909\u66f4\u5185\u5bb9\u3001FROM\u306b\u53c2\u7167\u5143\u30c6\u30fc\u30d6\u30eb\u3001WHERE\u306b\u7d50\u5408\u6761\u4ef6\u3092\u66f8\u304d\u307e\u3059\u3002\u5b9f\u884c\u524d\u306b\u6700\u3082\u6ce8\u610f\u3057\u305f\u3044\u306e\u306f\u3001\u66f4\u65b0\u51481\u884c\u306b\u5bfe\u3057\u3066\u53c2\u7167\u5143\u304c\u8907\u6570\u884c\u4e00\u81f4\u3057\u306a\u3044\u3053\u3068\u3002\u91cd\u8907\u304c\u3042\u308b\u5834\u5408\u3001\u3069\u306e\u5024\u304c\u4f7f\u308f\u308c\u308b\u304b\u4e88\u6e2c\u3067\u304d\u307e\u305b\u3093\u3002\u307e\u305aSELECT\u3067\u7d50\u5408\u7d50\u679c\u3092\u78ba\u8a8d\u3057\u3066\u304b\u3089\u66f4\u65b0\u3057\u307e\u3057\u3087\u3046\u3002<\/p>\n<h2>UPDATE FROM\u306e\u57fa\u672c\u69cb\u6587\u3068\u5f79\u5272<\/h2>\n<pre><code>UPDATE inventory AS i\r\nSET unit_price = u.new_price\r\nFROM price_updates AS u\r\nWHERE i.sku = u.sku;<\/code><\/pre>\n<p>inventory\u304c\u66f4\u65b0\u5148\u3001price_updates\u304c\u53c2\u7167\u5143\u3067\u3059\u3002SET\u306b\u66f4\u65b0\u3059\u308b\u5217\u3001FROM\u306b\u53c2\u7167\u5148\u306e\u30c6\u30fc\u30d6\u30eb\u3001WHERE\u306b\u7d50\u5408\u6761\u4ef6\u3092\u7f6e\u304d\u307e\u3059\u3002WHERE\u3092\u7701\u304f\u3068\u60f3\u5b9a\u5916\u306e\u884c\u307e\u3067\u66f4\u65b0\u3055\u308c\u308b\u53ef\u80fd\u6027\u304c\u3042\u308b\u305f\u3081\u3001\u66f4\u65b0\u30ad\u30fc\u3092\u660e\u793a\u3057\u3066\u304f\u3060\u3055\u3044\u3002PostgreSQL\u306eUPDATE\u69cb\u6587\u3067\u3059\u3002MySQL\u306eUPDATE JOIN\u3068\u540c\u3058\u66f8\u304d\u65b9\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002<\/p>\n<blockquote>\n<p><strong>\u7528\u8a9e\u89e3\u8aac\uff1aUPDATE &#8230; FROM<\/strong><br \/>\u66f4\u65b0\u5148\u306e\u884c\u3068\u53c2\u7167\u5143\u30c6\u30fc\u30d6\u30eb\u306e\u884c\u3092\u7d50\u5408\u3057\u3001\u53c2\u7167\u5143\u306e\u5217\u3092\u4f7f\u3063\u3066\u66f4\u65b0\u3059\u308bPostgreSQL\u306e\u69cb\u6587\u3067\u3059\u3002\u7d50\u5408\u306e\u4e00\u81f4\u4ef6\u6570\u304c\u66f4\u65b0\u7d50\u679c\u306b\u5f71\u97ff\u3057\u307e\u3059\u3002<\/p>\n<\/blockquote>\n<p>\u6839\u62e0\uff1aPostgreSQL\u516c\u5f0f\u300cUPDATE\u300dhttps:\/\/www.postgresql.org\/docs\/current\/sql-update.html<\/p>\n<hr>\n<h2>\u30b5\u30f3\u30d7\u30eb\u30c7\u30fc\u30bf\u3068\u66f4\u65b0\u5f8c\u306e\u671f\u5f85\u5024<\/h2>\n<p>\u5546\u54c1\u30de\u30b9\u30bf\u30fcinventory\u3068\u4fa1\u683c\u66f4\u65b0\u30c7\u30fc\u30bfprice_updates\u3092\u4f8b\u306b\u3057\u307e\u3059\u3002\u5404sku\u306fprice_updates\u5074\u3067\u4e00\u610f\u3067\u3042\u308b\u524d\u63d0\u3067\u3059\u3002\u30c7\u30fc\u30bf\u306f\u8aac\u660e\u7528\u3067\u3042\u308a\u3001\u5b9f\u969b\u306eDB\u3067\u81ea\u52d5\u5b9f\u884c\u3057\u305f\u7d50\u679c\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002<\/p>\n<table>\n<thead>\n<tr>\n<th>inventory.sku<\/th>\n<th>\u66f4\u65b0\u524dunit_price<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>A100<\/td>\n<td>1000<\/td>\n<\/tr>\n<tr>\n<td>B200<\/td>\n<td>2000<\/td>\n<\/tr>\n<tr>\n<td>C300<\/td>\n<td>3000<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<table>\n<thead>\n<tr>\n<th>price_updates.sku<\/th>\n<th>new_price<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>A100<\/td>\n<td>1200<\/td>\n<\/tr>\n<tr>\n<td>B200<\/td>\n<td>1800<\/td>\n<\/tr>\n<tr>\n<td>D400<\/td>\n<td>900<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\u7d50\u5408\u6761\u4ef6\u304c\u4e00\u81f4\u3059\u308bA100\u3068B200\u3060\u3051\u304c\u66f4\u65b0\u5bfe\u8c61\u3067\u3059\u3002C300\u306f\u53c2\u7167\u5143\u306b\u4e00\u81f4\u3059\u308b\u884c\u304c\u306a\u3044\u305f\u3081\u3001\u5909\u66f4\u3055\u308c\u307e\u305b\u3093\u3002D400\u306f\u66f4\u65b0\u5148\u306b\u5b58\u5728\u3057\u307e\u305b\u3093\u3002<\/p>\n<table>\n<thead>\n<tr>\n<th>sku<\/th>\n<th>\u66f4\u65b0\u5f8cunit_price\uff08\u671f\u5f85\u5024\uff09<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>A100<\/td>\n<td>1200<\/td>\n<\/tr>\n<tr>\n<td>B200<\/td>\n<td>1800<\/td>\n<\/tr>\n<tr>\n<td>C300<\/td>\n<td>3000<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<hr>\n<h2>\u66f4\u65b0\u524d\u306bSELECT\u3067\u5bfe\u8c61\u884c\u3092\u78ba\u8a8d\u3059\u308b<\/h2>\n<p>\u3044\u304d\u306a\u308aUPDATE\u3059\u308b\u524d\u306b\u3001\u540c\u3058\u7d50\u5408\u6761\u4ef6\u3092SELECT\u3067\u78ba\u8a8d\u3057\u307e\u3059\u3002WHERE\u3067\u5bfe\u8c61\u7bc4\u56f2\u304c\u7d5e\u3089\u308c\u3066\u3044\u308b\u304b\u3001\u66f4\u65b0\u524d\u5f8c\u306e\u5024\u304c\u6b63\u3057\u3044\u304b\u3092\u30c1\u30a7\u30c3\u30af\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n<pre><code>SELECT\r\n    i.sku,\r\n    i.unit_price AS before_price,\r\n    u.new_price AS planned_price\r\nFROM inventory AS i\r\nJOIN price_updates AS u\r\n  ON i.sku = u.sku\r\nWHERE i.unit_price IS DISTINCT FROM u.new_price\r\nORDER BY i.sku;<\/code><\/pre>\n<p>IS DISTINCT FROM\u306fNULL\u3082\u542b\u3081\u3066\u5dee\u5206\u5224\u5b9a\u3067\u304d\u308bPostgreSQL\u306e\u6bd4\u8f03\u6f14\u7b97\u5b50\u3067\u3059\u3002WHERE\u53e5\u3092UPDATE\u306b\u3082\u540c\u3058\u5f62\u3067\u53cd\u6620\u3059\u308c\u3070\u3001\u3059\u3067\u306b\u540c\u984d\u306e\u5546\u54c1\u3092\u4e0d\u8981\u306b\u66f4\u65b0\u3059\u308b\u51e6\u7406\u3092\u907f\u3051\u3089\u308c\u307e\u3059\u3002<\/p>\n<pre><code>UPDATE inventory AS i\r\nSET unit_price = u.new_price\r\nFROM price_updates AS u\r\nWHERE i.sku = u.sku\r\n  AND i.unit_price IS DISTINCT FROM u.new_price\r\nRETURNING i.sku, i.unit_price;<\/code><\/pre>\n<p>RETURNING\u306f\u66f4\u65b0\u3057\u305f\u884c\u306e\u5024\u3092\u8fd4\u3057\u307e\u3059\u3002\u30a2\u30d7\u30ea\u306e\u30ed\u30b0\u3084\u7d50\u679c\u78ba\u8a8d\u306b\u5f79\u7acb\u3061\u307e\u3059\u3002\u305f\u3060\u3057RETURNING\u306f\u5909\u66f4\u3092\u53d6\u308a\u6d88\u3059\u6a5f\u80fd\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002<\/p>\n<hr>\n<h2>\u53c2\u7167\u5143\u306b\u91cd\u8907\u30ad\u30fc\u304c\u3042\u308b\u3068\u5371\u967a\u306a\u7406\u7531<\/h2>\n<p>\u4f8b\u3048\u3070price_updates\u306bA100\u304c2\u4ef6\u3042\u308a\u3001\u305d\u308c\u305e\u308c1200\u5186\u30681300\u5186\u3092\u793a\u3057\u3066\u3044\u308b\u5834\u5408\u3001\u3069\u3061\u3089\u306e\u5024\u304c\u4f7f\u308f\u308c\u308b\u304b\u306f\u4e88\u6e2c\u3067\u304d\u307e\u305b\u3093\u3002PostgreSQL\u306e\u516c\u5f0f\u30de\u30cb\u30e5\u30a2\u30eb\u3082\u3001\u66f4\u65b0\u51481\u884c\u306b\u5bfe\u3057\u3066FROM\u5074\u304c1\u884c\u3057\u304b\u4e00\u81f4\u3057\u306a\u3044\u8a2d\u8a08\u3092\u6c42\u3081\u3066\u3044\u307e\u3059\u3002<\/p>\n<pre><code>SELECT sku, COUNT(*) AS matches\r\nFROM price_updates\r\nGROUP BY sku\r\nHAVING COUNT(*) &gt; 1;<\/code><\/pre>\n<p>\u3053\u306e\u7d50\u679c\u304c1\u4ef6\u3067\u3082\u51fa\u308b\u5834\u5408\u306f\u3001\u305d\u306e\u307e\u307eUPDATE\u3057\u306a\u3044\u3067\u304f\u3060\u3055\u3044\u3002\u66f4\u65b0\u5143\u3092\u4e00\u610f\u306b\u3059\u308b\u304b\u3001\u3069\u306e\u884c\u3092\u63a1\u7528\u3059\u308b\u304b\u3092\u660e\u793a\u7684\u306b\u6c7a\u3081\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<ul>\n<li>sku\u306b\u4e00\u610f\u5236\u7d04\u3092\u8a2d\u3051\u3089\u308c\u308b\u5834\u5408\u306f\u5236\u7d04\u3067\u4fdd\u8a3c\u3059\u308b\u3002<\/li>\n<li>\u5c65\u6b74\u30c7\u30fc\u30bf\u306a\u3089\u66f4\u65b0\u65e5\u6642\u3068\u4e00\u610f\u306e\u9023\u756a\u3067\u63a1\u7528\u3059\u308b1\u4ef6\u3092\u78ba\u5b9a\u3059\u308b\u3002<\/li>\n<li>\u8907\u6570\u4ef6\u304c\u60f3\u5b9a\u5916\u306a\u3089\u30c7\u30fc\u30bf\u6295\u5165\u5143\u3092\u4fee\u6b63\u3059\u308b\u3002<\/li>\n<li>DISTINCT\u3060\u3051\u3067\u7570\u306a\u308b\u4fa1\u683c\u306e\u884c\u30921\u4ef6\u306b\u307e\u3068\u3081\u305f\u3064\u3082\u308a\u306b\u306a\u3089\u306a\u3044\u3002<\/li>\n<\/ul>\n<h2>\u30b5\u30d6\u30af\u30a8\u30ea\u306b\u3088\u308bUPDATE\u3068\u306e\u4f7f\u3044\u5206\u3051<\/h2>\n<p>\u5358\u4e00\u5024\u3092\u8fd4\u3059\u30b5\u30d6\u30af\u30a8\u30ea\u3067\u3082\u5225\u30c6\u30fc\u30d6\u30eb\u306e\u5024\u3067\u66f4\u65b0\u3067\u304d\u307e\u3059\u3002\u305f\u3060\u3057\u3001\u5358\u7d14\u306aSET\u30b5\u30d6\u30af\u30a8\u30ea\u306f\u4e00\u81f4\u3059\u308b\u884c\u304c\u306a\u3044\u3068NULL\u3092\u8fd4\u3059\u305f\u3081\u3001\u5bfe\u8c61\u7bc4\u56f2\u3092EXISTS\u306a\u3069\u3067\u7d5e\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<pre><code>UPDATE inventory AS i\r\nSET unit_price = (\r\n  SELECT u.new_price\r\n  FROM price_updates AS u\r\n  WHERE u.sku = i.sku\r\n)\r\nWHERE EXISTS (\r\n  SELECT 1\r\n  FROM price_updates AS u\r\n  WHERE u.sku = i.sku\r\n);<\/code><\/pre>\n<p>\u3053\u306e\u5f62\u3067\u30b5\u30d6\u30af\u30a8\u30ea\u304c\u8907\u6570\u884c\u3092\u8fd4\u3059\u3068\u30a8\u30e9\u30fc\u306b\u306a\u308b\u305f\u3081\u3001\u53c2\u7167\u5143\u306e\u91cd\u8907\u306b\u6c17\u4ed8\u3051\u308b\u5834\u5408\u304c\u3042\u308a\u307e\u3059\u3002\u5bfe\u3057\u3066UPDATE FROM\u3067\u306f\u8907\u6570\u4e00\u81f4\u6642\u306b\u4e0d\u5b9a\u306e1\u4ef6\u304c\u4f7f\u308f\u308c\u5f97\u307e\u3059\u3002\u5b89\u5168\u6027\u3084\u5fc5\u8981\u306a\u51e6\u7406\u306b\u5408\u308f\u305b\u3066\u9078\u3073\u307e\u3059\u3002<\/p>\n<h2>\u30c8\u30e9\u30f3\u30b6\u30af\u30b7\u30e7\u30f3\u3067\u5909\u66f4\u3092\u78ba\u8a8d\u3057\u3066\u304b\u3089\u78ba\u5b9a\u3059\u308b<\/h2>\n<p>\u691c\u8a3c\u7528DB\u3067\u306fBEGIN\u304b\u3089\u8a66\u3057\u3001\u7d50\u679c\u304c\u60f3\u5b9a\u3068\u9055\u3048\u3070ROLLBACK\u3067\u304d\u307e\u3059\u3002\u30c7\u30fc\u30bf\u3092\u6c38\u7d9a\u7684\u306b\u5909\u66f4\u3059\u308b\u5fc5\u8981\u304c\u3042\u308b\u3068\u304d\u3060\u3051\u3001\u30ec\u30d3\u30e5\u30fc\u3068\u627f\u8a8d\u3092\u7d4c\u3066COMMIT\u3057\u307e\u3059\u3002\u4ee5\u4e0b\u306f\u30ed\u30fc\u30eb\u30d0\u30c3\u30af\u3059\u308b\u691c\u8a3c\u4f8b\u3067\u3059\u3002<\/p>\n<pre><code>BEGIN;\r\n\r\nUPDATE inventory AS i\r\nSET unit_price = u.new_price\r\nFROM price_updates AS u\r\nWHERE i.sku = u.sku\r\n  AND i.unit_price IS DISTINCT FROM u.new_price\r\nRETURNING i.sku, i.unit_price;\r\n\r\nROLLBACK;<\/code><\/pre>\n<p>\u30c8\u30e9\u30f3\u30b6\u30af\u30b7\u30e7\u30f3\u4e2d\u3082\u884c\u30ed\u30c3\u30af\u3084\u30c8\u30ea\u30ac\u30fc\u304c\u95a2\u4e0e\u3059\u308b\u3053\u3068\u304c\u3042\u308a\u3001ROLLBACK\u3067\u5916\u90e8\u30b7\u30b9\u30c6\u30e0\u5074\u306e\u3059\u3079\u3066\u306e\u526f\u4f5c\u7528\u307e\u3067\u53d6\u308a\u6d88\u305b\u308b\u3068\u306f\u9650\u308a\u307e\u305b\u3093\u3002\u691c\u8a3c\u74b0\u5883\u3067\u5b9f\u65bd\u3057\u3001\u672c\u756a\u3067\u5b9f\u884c\u3059\u308b\u3068\u304d\u306f\u5bfe\u8c61\u4ef6\u6570\u3068\u904b\u7528\u624b\u9806\u3092\u78ba\u8a8d\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n<h2>0\u4ef6\u66f4\u65b0\u3084NULL\u3067\u8ff7\u3063\u305f\u3068\u304d\u306e\u78ba\u8a8d\u9805\u76ee<\/h2>\n<ul>\n<li>UPDATE 0\u306a\u3089sku\u306e\u5024\u30fb\u30c7\u30fc\u30bf\u578b\u30fb\u6587\u5b57\u5217\u306e\u7a7a\u767d\u30fbWHERE\u6761\u4ef6\u3092\u78ba\u8a8d\u3059\u308b\u3002<\/li>\n<li>\u53c2\u7167\u5143\u306b\u4e00\u81f4\u3057\u306a\u3044\u884c\u306fUPDATE FROM\u3067\u306f\u66f4\u65b0\u5bfe\u8c61\u306b\u306a\u3089\u306a\u3044\u3002<\/li>\n<li>NULL\u3092\u542b\u3080\u4fa1\u683c\u5dee\u5206\u306f=\u3084&lt;&gt;\u3088\u308aIS DISTINCT FROM\u3067\u5224\u5b9a\u3059\u308b\u3002<\/li>\n<li>\u4e3b\u30ad\u30fc\u3084\u4e00\u610f\u5236\u7d04\u306e\u6709\u7121\u3092\u78ba\u8a8d\u3057\u3001\u53c2\u7167\u5143\u306e\u91cd\u8907\u3092\u4e8b\u524d\u306b\u691c\u51fa\u3059\u308b\u3002<\/li>\n<li>\u91cd\u8981\u306a\u66f4\u65b0\u306f\u691c\u8a3c\u74b0\u5883\u3067\u5bfe\u8c61\u884c\u6570\u3068\u7d50\u679c\u3092\u6bd4\u8f03\u3057\u3066\u304b\u3089\u672c\u756a\u3078\u9069\u7528\u3059\u308b\u3002<\/li>\n<\/ul>\n<p>UPDATE FROM\u306f\u4e00\u62ec\u66f4\u65b0\u306b\u4fbf\u5229\u3067\u3059\u304c\u3001\u7d50\u5408\u6761\u4ef6\u306e\u8aa4\u308a\u304c\u5927\u898f\u6a21\u306a\u8aa4\u66f4\u65b0\u3078\u76f4\u7d50\u3057\u307e\u3059\u3002SELECT\u3067\u5bfe\u8c61\u3092\u78ba\u5b9a\u3057\u3001\u5909\u66f4\u5dee\u5206\u3068\u623b\u3057\u65b9\u3092\u4e8b\u524d\u306b\u7528\u610f\u3059\u308b\u306e\u304c\u57fa\u672c\u3067\u3059\u3002<\/p>\n<h2>\u95a2\u9023\u3059\u308bSQL\u8a18\u4e8b<\/h2>\n<p>JOIN\u6761\u4ef6\u306e\u57fa\u672c\u306f\u65e2\u5b58\u8a18\u4e8b\u3067\u78ba\u8a8d\u3067\u304d\u307e\u3059\u3002\u66f4\u65b0\u5f0f\u306e\u4e2d\u3067\u6761\u4ef6\u5206\u5c90\u3057\u305f\u3044\u5834\u5408\u306fCASE\u5f0f\u306e\u6574\u7406\u3082\u5f79\u7acb\u3061\u307e\u3059\u3002<\/p>\n<p>\uff08\u7d50\u5408\u6761\u4ef6\u3068\u4e00\u81f4\u884c\u6570\u306e\u78ba\u8a8d\u306b\u3064\u3044\u3066\u306f\u300e<a href=\"https:\/\/route-zero.com\/recruit\/route\/1119\/\">SQL JOIN\u306e\u57fa\u672c\u304b\u3089\u5b9f\u8df5\u307e\u3067\uff5cINNER\u30fbLEFT\u30fbRIGHT\u30fbOUTER JOIN\u306e\u9055\u3044\u3092\u308f\u304b\u308a\u3084\u3059\u304f\u89e3\u8aac<\/a>\u300f\u3092\u3054\u53c2\u7167\u304f\u3060\u3055\u3044\uff09<\/p>\n<p>\uff08UPDATE\u6642\u306eCASE\u5f0f\u306b\u3064\u3044\u3066\u306f\u300e<a href=\"https:\/\/route-zero.com\/recruit\/route\/1323\/\">SQL CASE\u5f0f\u306e\u4f7f\u3044\u65b9\uff5cSELECT\u30fbWHERE\u30fbUPDATE\u3067\u6761\u4ef6\u5206\u5c90\u3059\u308b\u66f8\u304d\u65b9\u3068\u3064\u307e\u305a\u304d\u89e3\u6d88\u5b9f\u4f8b<\/a>\u300f\u3092\u3054\u53c2\u7167\u304f\u3060\u3055\u3044\uff09<\/p>\n<h2>\u3088\u304f\u3042\u308b\u8cea\u554f<\/h2>\n<h3>UPDATE FROM\u306fUPDATE JOIN\u3068\u540c\u3058\u66f8\u304d\u65b9\u3067\u3059\u304b\uff1f<\/h3>\n<p>\u8003\u3048\u65b9\u306f\u4f3c\u3066\u3044\u307e\u3059\u304c\u69cb\u6587\u306fDB\u3054\u3068\u306b\u7570\u306a\u308a\u307e\u3059\u3002\u3053\u3053\u3067\u7d39\u4ecb\u3057\u305f\u306e\u306fPostgreSQL\u306eUPDATE &#8230; FROM\u3067\u3059\u3002<\/p>\n<h3>\u53c2\u7167\u5143\u306b\u540c\u3058\u30ad\u30fc\u304c\u8907\u6570\u3042\u308b\u3068\u3069\u3046\u306a\u308a\u307e\u3059\u304b\uff1f<\/h3>\n<p>\u66f4\u65b0\u51481\u884c\u306b\u5bfe\u3057\u3066FROM\u5074\u304c\u8907\u6570\u4e00\u81f4\u3059\u308b\u3068\u3001\u3069\u306e\u884c\u306e\u5024\u3067\u66f4\u65b0\u3059\u308b\u304b\u4e88\u6e2c\u3067\u304d\u307e\u305b\u3093\u3002\u66f4\u65b0\u524d\u306b\u91cd\u8907\u3092\u78ba\u8a8d\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n<h3>RETURNING\u304c\u4ed8\u3044\u3066\u3044\u308c\u3070\u5b89\u5168\u306b\u5143\u3078\u623b\u305b\u307e\u3059\u304b\uff1f<\/h3>\n<p>RETURNING\u306f\u66f4\u65b0\u3057\u305f\u884c\u306e\u5024\u3092\u8868\u793a\u3059\u308b\u6a5f\u80fd\u3067\u3001\u53d6\u308a\u6d88\u3057\u6a5f\u80fd\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002\u691c\u8a3c\u6642\u306f\u30c8\u30e9\u30f3\u30b6\u30af\u30b7\u30e7\u30f3\u3068ROLLBACK\u3092\u4f7f\u7528\u3057\u307e\u3059\u3002<\/p>\n<p>\u5225\u30c6\u30fc\u30d6\u30eb\u306e\u5024\u3067\u66f4\u65b0\u3059\u308b\u3068\u304d\u306f\u300cUPDATE\u5148\u30fbFROM\u5143\u30fbWHERE\u7d50\u5408\u6761\u4ef6\u300d\u3092\u660e\u793a\u3059\u308b\u3053\u3068\u306b\u52a0\u3048\u3001\u66f4\u65b0\u51481\u884c\u306b\u5bfe\u3057\u3066\u53c2\u7167\u51431\u884c\u3068\u306a\u308b\u3053\u3068\u304c\u91cd\u8981\u3067\u3059\u3002\u66f4\u65b0\u524dSELECT\u3001\u91cd\u8907\u30ad\u30fc\u691c\u67fb\u3001\u691c\u8a3c\u74b0\u5883\u3067\u306eROLLBACK\u3092\u7d44\u307f\u5408\u308f\u305b\u3066\u5b89\u5168\u306b\u6271\u3063\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n<p>\u5b9f\u969b\u306e\u66f4\u65b0SQL\u3092\u4f5c\u308b\u524d\u306b\u3001\u307e\u305a\u540c\u3058\u7d50\u5408\u6761\u4ef6\u306eSELECT\u7d50\u679c\u3092\u78ba\u8a8d\u3057\u3066\u307f\u307e\u3057\u3087\u3046\u3002<\/p>\n","protected":false},"featured_media":6480,"template":"","meta":{"ssp_meta_title":"PostgreSQL UPDATE FROM\u306e\u4f7f\u3044\u65b9\uff5cJOIN\u66f4\u65b0\u3068\u91cd\u8907\u30ad\u30fc\u5bfe\u7b56","ssp_meta_description":"PostgreSQL\u306eUPDATE FROM\u3067\u5225\u30c6\u30fc\u30d6\u30eb\u304b\u3089\u5024\u3092\u66f4\u65b0\u3059\u308bSQL\u4f8b\u3002\u7d50\u5408\u6761\u4ef6\u3001\u53c2\u7167\u5143\u306e\u91cd\u8907\u30c1\u30a7\u30c3\u30af\u3001RETURNING\u3001\u30c8\u30e9\u30f3\u30b6\u30af\u30b7\u30e7\u30f3\u3068ROLLBACK\u307e\u3067\u89e3\u8aac\u3057\u307e\u3059\u3002","ssp_meta_keyword":"PostgreSQL UPDATE FROM JOIN,PostgreSQL UPDATE \u5225\u30c6\u30fc\u30d6\u30eb,PostgreSQL JOIN \u66f4\u65b0,UPDATE FROM \u91cd\u8907,PostgreSQL RETURNING","ssp_meta_canonical":""},"route_category":[9],"_links":{"self":[{"href":"https:\/\/route-zero.com\/recruit\/wp-json\/wp\/v2\/route\/6475"}],"collection":[{"href":"https:\/\/route-zero.com\/recruit\/wp-json\/wp\/v2\/route"}],"about":[{"href":"https:\/\/route-zero.com\/recruit\/wp-json\/wp\/v2\/types\/route"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/route-zero.com\/recruit\/wp-json\/wp\/v2\/media\/6480"}],"wp:attachment":[{"href":"https:\/\/route-zero.com\/recruit\/wp-json\/wp\/v2\/media?parent=6475"}],"wp:term":[{"taxonomy":"route_category","embeddable":true,"href":"https:\/\/route-zero.com\/recruit\/wp-json\/wp\/v2\/route_category?post=6475"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}