{"id":2929,"date":"2026-05-07T10:13:50","date_gmt":"2026-05-07T02:13:50","guid":{"rendered":"https:\/\/tekno.bali-island.com\/?p=2929"},"modified":"2026-05-07T10:13:53","modified_gmt":"2026-05-07T02:13:53","slug":"sql%e3%83%87%e3%83%bc%e3%82%bf%e3%83%99%e3%83%bc%e3%82%b9%e3%81%ab%e3%81%8a%e3%81%91%e3%82%8bjoin%e3%81%ae%e6%a6%82%e5%bf%b5%e3%82%92%e7%90%86%e8%a7%a3%e3%81%99%e3%82%8b","status":"publish","type":"post","link":"https:\/\/tekno.bali-island.com\/ja\/articles\/sql%e3%83%87%e3%83%bc%e3%82%bf%e3%83%99%e3%83%bc%e3%82%b9%e3%81%ab%e3%81%8a%e3%81%91%e3%82%8bjoin%e3%81%ae%e6%a6%82%e5%bf%b5%e3%82%92%e7%90%86%e8%a7%a3%e3%81%99%e3%82%8b\/","title":{"rendered":"SQL\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u306b\u304a\u3051\u308bJOIN\u306e\u6982\u5ff5\u3092\u7406\u89e3\u3059\u308b"},"content":{"rendered":"\n<p><strong>JOIN<\/strong> \u306fSQL\u306e\u53e5\u3067\u3001\u95a2\u9023\u3059\u308b\u5024\u3092\u6301\u3064\u5217\u306b\u57fa\u3065\u3044\u30662\u3064\u4ee5\u4e0a\u306e\u30c6\u30fc\u30d6\u30eb\u304b\u3089\u884c\u3092\u7d50\u5408\u3059\u308b\u305f\u3081\u306b\u4f7f\u7528\u3055\u308c\u307e\u3059\u3002\u305d\u306e\u4e3b\u306a\u76ee\u7684\u306f\u3001\u5b8c\u5168\u304b\u3064\u5305\u62ec\u7684\u306a\u60c5\u5831\u3092\u6301\u3064\u5358\u4e00\u306e\u30c7\u30fc\u30bf\u30bb\u30c3\u30c8\u3092\u53d6\u5f97\u3059\u308b\u3053\u3068\u3067\u3059\u3002\u3053\u3053\u3067\u3044\u3046\u300c\u5b8c\u5168\u300d\u3068\u306f\u3001\u30c6\u30fc\u30d6\u30eb\u9593\u306e\u30ea\u30ec\u30fc\u30b7\u30e7\u30f3\u306b\u3088\u3063\u3066\u5f97\u3089\u308c\u308b\u5217\u306e\u7d44\u307f\u5408\u308f\u305b\u304b\u3089\u306a\u308b\u30c7\u30fc\u30bf\u69cb\u9020\u3092\u6307\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u591a\u69d8\u306a\u30c7\u30fc\u30bf\u53d6\u5f97\u306e\u30cb\u30fc\u30ba\u3092\u6e80\u305f\u3059\u305f\u3081\u306b\u3001JOIN\u30b3\u30de\u30f3\u30c9\u306f <strong>OUTER JOIN<\/strong>\u3001<strong>INNER JOIN<\/strong>\u3001<strong>RIGHT JOIN<\/strong>\u3001<strong>LEFT JOIN<\/strong> \u306e\u3044\u304f\u3064\u304b\u306e\u7a2e\u985e\u306b\u5206\u3051\u3089\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>SQL JOIN\u306e\u7a2e\u985e\u306e\u9055\u3044<\/strong><\/h2>\n\n\n\n<p>\u4ee5\u4e0b\u306b\u3001\u3055\u307e\u3056\u307e\u306aJOIN\u53e5\u306e\u8aac\u660e\u3068\u69cb\u6587\u4f8b\u3092\u793a\u3057\u3001\u305d\u308c\u305e\u308c\u306e\u9055\u3044\u3092\u7406\u89e3\u3059\u308b\u306e\u306b\u5f79\u7acb\u3066\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>1. FULL OUTER JOIN<\/strong><\/h3>\n\n\n\n<p>Outer join\uff08\u307e\u305f\u306fFull Outer Join\uff09\u306f\u3001\u7d50\u5408\u3055\u308c\u308b\u4e21\u65b9\u306e\u30c6\u30fc\u30d6\u30eb\u304b\u3089\u3001\u4e00\u81f4\u3059\u308b\u5024\u304c\u3042\u308b\u884c\u3082\u306a\u3044\u884c\u3082\u3059\u3079\u3066\u306e\u30ec\u30b3\u30fc\u30c9\uff08\u884c\uff09\u3092\u8fd4\u3057\u307e\u3059\u30022\u3064\u306e\u30c6\u30fc\u30d6\u30eb\u9593\u306b\u4e00\u81f4\u3059\u308b\u30c7\u30fc\u30bf\u304c\u306a\u3044\u5834\u5408\u3001\u7d50\u5408\u7d50\u679c\u306e\u6b20\u843d\u90e8\u5206\u306f\u81ea\u52d5\u7684\u306bNULL\u5024\u3067\u57cb\u3081\u3089\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<p><strong>\u69cb\u6587:<\/strong><\/p>\n\n\n\n<p>SQL<\/p>\n\n\n\n<p>SELECT column_name(s)<\/p>\n\n\n\n<p>FROM table1<\/p>\n\n\n\n<p>FULL OUTER JOIN table2<\/p>\n\n\n\n<p>ON table1.column_name = table2.column_name<\/p>\n\n\n\n<p>WHERE condition;<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>2. LEFT JOIN<\/strong><\/h3>\n\n\n\n<p>Left Join\u306f\u3001\u7d50\u5408\u3055\u308c\u308b2\u3064\u306e\u30c6\u30fc\u30d6\u30eb\u306e\u3046\u3061\u5de6\u5074\u306e\u30c6\u30fc\u30d6\u30eb\uff08\u6700\u521d\u306e\u30c6\u30fc\u30d6\u30eb\uff09\u304b\u3089\u3059\u3079\u3066\u306e\u30ec\u30b3\u30fc\u30c9\u3092\u8fd4\u3059\u64cd\u4f5c\u3067\u3059\u3002\u5de6\u5074\u306e\u30c6\u30fc\u30d6\u30eb\u306e\u5024\u304c\u53f3\u5074\u306e\u30c6\u30fc\u30d6\u30eb\uff082\u756a\u76ee\u306e\u30c6\u30fc\u30d6\u30eb\uff09\u306e\u30c7\u30fc\u30bf\u3068\u4e00\u81f4\u3057\u306a\u304f\u3066\u3082\u3001\u5de6\u5074\u306e\u30c6\u30fc\u30d6\u30eb\u306e\u3059\u3079\u3066\u306e\u30c7\u30fc\u30bf\u306f\u4fdd\u6301\u3055\u308c\u8868\u793a\u3055\u308c\u307e\u3059\u3002\u4e00\u81f4\u3059\u308b\u3082\u306e\u304c\u306a\u3044\u53f3\u5074\u306e\u30c6\u30fc\u30d6\u30eb\u306e\u30c7\u30fc\u30bf\u306fNULL\u306b\u7f6e\u304d\u63db\u3048\u3089\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<p><strong>\u69cb\u6587:<\/strong><\/p>\n\n\n\n<p>SQL<\/p>\n\n\n\n<p>SELECT column_name(s)<\/p>\n\n\n\n<p>FROM table1<\/p>\n\n\n\n<p>LEFT JOIN table2<\/p>\n\n\n\n<p>ON table1.column_name = table2.column_name;<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>3. RIGHT JOIN\uff08\u88dc\u8db3\uff09<\/strong><\/h3>\n\n\n\n<p>Left Join\u306e\u9006\u3068\u3057\u3066\u3001Right Join\u53e5\u306f\u53f3\u5074\u306e\u30c6\u30fc\u30d6\u30eb\uff082\u756a\u76ee\u306e\u30c6\u30fc\u30d6\u30eb\uff09\u304b\u3089\u3059\u3079\u3066\u306e\u30ec\u30b3\u30fc\u30c9\u3092\u8fd4\u3057\u3001\u5de6\u5074\u306e\u30c6\u30fc\u30d6\u30eb\u304b\u3089\u4e00\u81f4\u3059\u308b\u30c7\u30fc\u30bf\u3082\u8fd4\u3057\u307e\u3059\u3002\u5de6\u5074\u306e\u30c6\u30fc\u30d6\u30eb\u306b\u4e00\u81f4\u3059\u308b\u30c7\u30fc\u30bf\u304c\u306a\u3044\u5834\u5408\u3001\u5de6\u5074\u306e\u7d50\u679c\u306fNULL\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p><strong>\u69cb\u6587:<\/strong><\/p>\n\n\n\n<p>SQL<\/p>\n\n\n\n<p>SELECT column_name(s)<\/p>\n\n\n\n<p>FROM table1<\/p>\n\n\n\n<p>RIGHT JOIN table2<\/p>\n\n\n\n<p>ON table1.column_name = table2.column_name;<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>4. INNER JOIN\uff08\u88dc\u8db3\uff09<\/strong><\/h3>\n\n\n\n<p>Inner Join\u306f\u6700\u3082\u983b\u7e41\u306b\u4f7f\u7528\u3055\u308c\u308b\u53e5\u3067\u3059\u3002Outer Join\u3068\u306f\u7570\u306a\u308a\u3001Inner Join\u306f\u3088\u308a\u53b3\u5bc6\u306b\u52d5\u4f5c\u3057\u3001\u7d50\u5408\u3055\u308c\u308b\u4e21\u65b9\u306e\u30c6\u30fc\u30d6\u30eb\u306b\u4e00\u81f4\u3059\u308b\u30c7\u30fc\u30bf\uff08\u7a4d\u96c6\u5408\uff09\u3092\u6301\u3064\u884c\u306e\u307f\u3092\u8fd4\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p><strong>\u69cb\u6587:<\/strong><\/p>\n\n\n\n<p>SQL<\/p>\n\n\n\n<p>SELECT column_name(s)<\/p>\n\n\n\n<p>FROM table1<\/p>\n\n\n\n<p>INNER JOIN table2<\/p>\n\n\n\n<p>ON table1.column_name = table2.column_name;<\/p>\n\n\n\n<p><\/p>\n","protected":false},"excerpt":{"rendered":"<p>JOIN \u306fSQL\u306e\u53e5\u3067\u3001\u95a2\u9023\u3059\u308b\u5024\u3092\u6301\u3064\u5217\u306b\u57fa\u3065\u3044\u30662\u3064\u4ee5\u4e0a\u306e\u30c6\u30fc\u30d6\u30eb\u304b\u3089\u884c\u3092\u7d50\u5408\u3059\u308b\u305f\u3081\u306b\u4f7f\u7528\u3055\u308c\u307e\u3059\u3002\u305d\u306e\u4e3b\u306a\u76ee\u7684\u306f\u3001\u5b8c\u5168\u304b\u3064\u5305\u62ec\u7684\u306a\u60c5\u5831\u3092\u6301\u3064\u5358\u4e00\u306e\u30c7\u30fc\u30bf\u30bb\u30c3\u30c8\u3092\u53d6\u5f97\u3059\u308b\u3053\u3068\u3067\u3059\u3002\u3053\u3053\u3067\u3044\u3046\u300c\u5b8c\u5168\u300d\u3068\u306f\u3001\u30c6\u30fc\u30d6\u30eb\u9593\u306e\u30ea\u30ec\u30fc\u30b7\u30e7\u30f3\u306b\u3088\u3063\u3066\u5f97\u3089\u308c\u308b\u5217\u306e\u7d44\u307f\u5408\u308f\u305b\u304b\u3089\u306a\u308b\u30c7\u30fc\u30bf\u69cb\u9020\u3092\u6307\u3057\u307e\u3059\u3002 \u591a\u69d8\u306a\u30c7\u30fc\u30bf\u53d6\u5f97\u306e\u30cb\u30fc\u30ba\u3092\u6e80\u305f\u3059\u305f\u3081\u306b\u3001JOIN\u30b3\u30de\u30f3\u30c9\u306f OUTER JOIN\u3001INNER JOIN &hellip;<\/p>\n","protected":false},"author":1,"featured_media":2910,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[100],"tags":[],"class_list":["post-2929","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-100"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.5 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>SQL\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u306b\u304a\u3051\u308bJOIN\u306e\u6982\u5ff5\u3092\u7406\u89e3\u3059\u308b<\/title>\n<meta name=\"description\" content=\"\u30c7\u30fc\u30bf\u7ba1\u7406\u306e\u305f\u3081\u306eINNER JOIN\u3001LEFT JOIN\u3001RIGHT JOIN\u3001FULL OUTER JOIN\u306eJOIN\u53e5\u3068\u69cb\u6587\u3092\u5b66\u3073\u307e\u3059\u3002\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" 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