{"id":101560,"date":"2024-03-22T04:08:34","date_gmt":"2024-03-21T19:08:34","guid":{"rendered":"https:\/\/www.silicloud.com\/ja\/blog\/sql%e6%80%8e%e4%b9%88%e6%9f%a5%e8%af%a2%e4%b8%a4%e5%bc%a0%e8%a1%a8%e4%b8%8d%e4%b8%80%e8%87%b4%e7%9a%84%e6%95%b0%e6%8d%ae\/"},"modified":"2024-04-04T09:34:31","modified_gmt":"2024-04-04T00:34:31","slug":"sql%e6%80%8e%e4%b9%88%e6%9f%a5%e8%af%a2%e4%b8%a4%e5%bc%a0%e8%a1%a8%e4%b8%8d%e4%b8%80%e8%87%b4%e7%9a%84%e6%95%b0%e6%8d%ae","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/ja\/blog\/sql%e6%80%8e%e4%b9%88%e6%9f%a5%e8%af%a2%e4%b8%a4%e5%bc%a0%e8%a1%a8%e4%b8%8d%e4%b8%80%e8%87%b4%e7%9a%84%e6%95%b0%e6%8d%ae\/","title":{"rendered":"sql\u600e\u4e48\u67e5\u8be2\u4e24\u5f20\u8868\u4e0d\u4e00\u81f4\u7684\u6570\u636e"},"content":{"rendered":"<p>2\u3064\u306e\u30c6\u30fc\u30d6\u30eb\u9593\u306e\u4e0d\u4e00\u81f4\u3092\u7167\u4f1a\u3059\u308b\u306b\u306f\u3001\u6b21\u306e\u65b9\u6cd5\u3092\u4f7f\u7528\u3057\u307e\u3059\u3002<\/p>\n<p>LEFT JOIN\u3068WHERE\u53e5\u3092\u4f7f\u7528\u3059\u308b<\/p>\n<pre class=\"post-pre\"><code><span class=\"hljs-keyword\">SELECT<\/span> t1.<span class=\"hljs-operator\">*<\/span>\r\n<span class=\"hljs-keyword\">FROM<\/span> table1 t1\r\n<span class=\"hljs-keyword\">LEFT<\/span> <span class=\"hljs-keyword\">JOIN<\/span> table2 t2 <span class=\"hljs-keyword\">ON<\/span> t1.id <span class=\"hljs-operator\">=<\/span> t2.id\r\n<span class=\"hljs-keyword\">WHERE<\/span> t2.id <span class=\"hljs-keyword\">IS<\/span> <span class=\"hljs-keyword\">NULL<\/span>\r\n<\/code><\/pre>\n<p>\u30c6\u30fc\u30d6\u30eb1\u306b\u3042\u3063\u3066\u30c6\u30fc\u30d6\u30eb2\u306b\u306a\u3044\u30c7\u30fc\u30bf\u3092\u3053\u306e\u30af\u30a8\u30ea\u306f\u8fd4\u3057\u307e\u3059\u3002<\/p>\n<p>\u65b9\u6cd5 2: UNION ALL \u3068 NOT IN \u30b5\u30d6\u30af\u30a8\u30ea\u3092\u4f7f\u7528\u3059\u308b<\/p>\n<pre class=\"post-pre\"><code><span class=\"hljs-keyword\">SELECT<\/span> <span class=\"hljs-operator\">*<\/span>\r\n<span class=\"hljs-keyword\">FROM<\/span> table1\r\n<span class=\"hljs-keyword\">WHERE<\/span> id <span class=\"hljs-keyword\">NOT<\/span> <span class=\"hljs-keyword\">IN<\/span> (<span class=\"hljs-keyword\">SELECT<\/span> id <span class=\"hljs-keyword\">FROM<\/span> table2)\r\n<span class=\"hljs-keyword\">UNION<\/span> <span class=\"hljs-keyword\">ALL<\/span>\r\n<span class=\"hljs-keyword\">SELECT<\/span> <span class=\"hljs-operator\">*<\/span>\r\n<span class=\"hljs-keyword\">FROM<\/span> table2\r\n<span class=\"hljs-keyword\">WHERE<\/span> id <span class=\"hljs-keyword\">NOT<\/span> <span class=\"hljs-keyword\">IN<\/span> (<span class=\"hljs-keyword\">SELECT<\/span> id <span class=\"hljs-keyword\">FROM<\/span> table1)\r\n<\/code><\/pre>\n<p>\u30c6\u30fc\u30d6\u30eb 1 \u306b\u5b58\u5728\u3057\u3066\u30c6\u30fc\u30d6\u30eb 2 \u306b\u5b58\u5728\u3057\u306a\u3044\u30c7\u30fc\u30bf\u3068\u3001\u30c6\u30fc\u30d6\u30eb 2 \u306b\u5b58\u5728\u3057\u3066\u30c6\u30fc\u30d6\u30eb 1 \u306b\u5b58\u5728\u3057\u306a\u3044\u30c7\u30fc\u30bf\u306e\u4e21\u65b9\u3092\u8fd4\u3059\u30af\u30a8\u30ea\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>2\u3064\u306e\u30c6\u30fc\u30d6\u30eb\u9593\u306e\u4e0d\u4e00\u81f4\u3092\u7167\u4f1a\u3059\u308b\u306b\u306f\u3001\u6b21\u306e\u65b9\u6cd5\u3092\u4f7f\u7528\u3057\u307e\u3059\u3002 LEFT JOIN\u3068WHERE\u53e5\u3092\u4f7f\u7528\u3059\u308b SELECT t1.* FROM table1 t1 LEFT JOIN table2 t2 ON t1.id  [&hellip;]<\/p>\n","protected":false},"author":6,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-101560","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v21.5 (Yoast SEO v21.5) - 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