{"id":2640,"date":"2016-03-24T01:50:30","date_gmt":"2016-03-23T16:50:30","guid":{"rendered":"http:\/\/taitan916.info\/blog\/?p=2640"},"modified":"2024-04-18T15:24:04","modified_gmt":"2024-04-18T06:24:04","slug":"post-2640","status":"publish","type":"post","link":"https:\/\/taitan916.info\/blog\/archives\/2640","title":{"rendered":"MySQL\u3067\u30ab\u30e9\u30e0\u6570\u306e\u7570\u306a\u308b\u30c6\u30fc\u30d6\u30eb\u3092\u7d50\u5408\u3059\u308b(UNION)"},"content":{"rendered":"<p>MySQL\u3067\u30ab\u30e9\u30e0\u6570\u306e\u7570\u306a\u308b\u30c6\u30fc\u30d6\u30eb\u540c\u58eb\u3092UNION\u3067\u7d50\u5408\u3055\u305b\u305f\u304b\u3063\u305f\u3002\u305f\u3060\u3001\u4f55\u3082\u8003\u3048\u305a\u306bSQL\u6587\u3092\u6253\u3061\u8fbc\u3080\u3068\u30a8\u30e9\u30fc\u306b\u306a\u3063\u305f\u3002SELECT\u6642\u306b\u53d6\u308a\u51fa\u3059\u30ab\u30e9\u30e0\u3092\u63c3\u3048\u3066\u3042\u3052\u308b\u5fc5\u8981\u304c\u3042\u308b\u307f\u305f\u3044\u3002\u4ee5\u4e0b\u306e\u901a\u308a\u3002<\/p>\n<p>&nbsp;<\/p>\n<h2>\u30ea\u30d5\u30a1\u30ec\u30f3\u30b9<\/h2>\n<p><a href=\"https:\/\/dev.mysql.com\/doc\/refman\/8.0\/ja\/union.html\" target=\"_blank\" rel=\"noopener\">https:\/\/dev.mysql.com\/doc\/refman\/8.0\/ja\/union.html<\/a><\/p>\n<p>&nbsp;<\/p>\n<h2>\u30bd\u30fc\u30b9\u30b3\u30fc\u30c9<\/h2>\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\">(\r\n    SELECT id, ymd, name \r\n    FROM table_a\r\n    WHERE name != ''\r\n)\r\nUNION ALL\r\n(\r\n    SELECT id, ymd, name \r\n    FROM table_b\r\n    WHERE name != ''\r\n)\r\nORDER BY date DESC\r\nLIMIT 0,5<\/pre>\n","protected":false},"excerpt":{"rendered":"<p>MySQL\u3067\u30ab\u30e9\u30e0\u6570\u306e\u7570\u306a\u308b\u30c6\u30fc\u30d6\u30eb\u540c\u58eb\u3092UNION\u3067\u7d50\u5408\u3055\u305b\u305f\u304b\u3063\u305f\u3002\u305f\u3060\u3001\u4f55 ... 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