{"id":200646,"date":"2025-05-06T13:42:13","date_gmt":"2025-05-06T05:42:13","guid":{"rendered":"https:\/\/server.hk\/cnblog\/200646\/"},"modified":"2025-05-06T13:42:13","modified_gmt":"2025-05-06T05:42:13","slug":"%e5%a6%82%e4%bd%95%e4%b8%80%e6%ac%a1%e6%80%a7%e6%9f%a5%e8%af%a2%e5%a4%9a%e4%b8%aa%e5%8d%95%e5%8f%b7%e7%9a%84%e6%9c%80%e6%96%b0%e7%8a%b6%e6%80%81%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/200646\/","title":{"rendered":"\u5982\u4f55\u4e00\u6b21\u6027\u67e5\u8be2\u591a\u4e2a\u5355\u53f7\u7684\u6700\u65b0\u72b6\u6001\uff1f"},"content":{"rendered":"<p><b><\/b> <\/p>\n<h1>\u5982\u4f55\u4e00\u6b21\u6027\u67e5\u8be2\u591a\u4e2a\u5355\u53f7\u7684\u6700\u65b0\u72b6\u6001\uff1f<\/h1>\n<p>\u4ece\u73b0\u5728\u5f00\u59cb\uff0c\u6211\u4eec\u8981\u52aa\u529b\u5b66\u4e60\u5566\uff01\u4eca\u5929\u6211\u7ed9\u5927\u5bb6\u5e26\u6765\uff0c\u611f\u5174\u8da3\u7684\u670b\u53cb\u8bf7\u7ee7\u7eed\u770b\u4e0b\u53bb\u5427\uff01\u4e0b\u6587\u4e2d\u7684\u5185\u5bb9\u6211\u4eec\u4e3b\u8981\u4f1a\u6d89\u53ca\u5230\u7b49\u7b49\u77e5\u8bc6\u70b9\uff0c\u5982\u679c\u5728\u9605\u8bfb\u672c\u6587\u8fc7\u7a0b\u4e2d\u6709\u9047\u5230\u4e0d\u6e05\u695a\u7684\u5730\u65b9\uff0c\u6b22\u8fce\u7559\u8a00\u5440\uff01\u6211\u4eec\u4e00\u8d77\u8ba8\u8bba\uff0c\u4e00\u8d77\u5b66\u4e60\uff01<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.17golang.com\/uploads\/20241110\/1731236089673090f98b391.jpg\" class=\"aligncenter\"><\/p>\n<p><strong>\u4f18\u5316 mysql \u67e5\u8be2\u4ee5\u4e00\u6b21\u67e5\u8be2\u591a\u4e2a\u5355\u53f7\u7684\u6700\u65b0\u72b6\u6001<\/strong><\/p>\n<p>\u5728\u7ed9\u5b9a\u7684\u6570\u636e\u5e93\u8868\u4e2d\uff0c\u6211\u4eec\u9700\u8981\u67e5\u8be2\u5355\u53f7\u4e3a 1 \u548c 2 \u7684\u6700\u65b0\u72b6\u6001\u4fe1\u606f\u3002\u7136\u800c\uff0c\u5229\u7528\u5faa\u73af\u67e5\u8be2\u7684\u65b9\u6cd5\u6548\u7387\u8f83\u4f4e\u3002\u4e0b\u9762\u63d0\u4f9b\u4e86\u4e00\u79cd\u6709\u6548\u7684\u67e5\u8be2\u8bed\u53e5\uff0c\u53ef\u4ee5\u4e00\u6b21\u6027\u83b7\u53d6\u6240\u6709\u5355\u53f7\u7684\u6700\u65b0\u72b6\u6001\uff1a<\/p>\n<pre>SELECT ord_id, status, updated_at\nFROM tablename\nWHERE ord_id IN (1, 2)\nGROUP BY ord_id<\/pre>\n<p><strong>\u67e5\u8be2\u539f\u7406\uff1a<\/strong><\/p>\n<ul>\n<li>in \u64cd\u4f5c\u7b26\u7528\u4e8e\u5bf9\u591a\u4e2a\u5355\u53f7\u8fdb\u884c\u8fc7\u6ee4\uff0c\u4ece\u800c\u6ee1\u8db3\u7ed9\u5b9a\u7684\u6761\u4ef6\u3002<\/li>\n<li>group by 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\u5217\u8fdb\u884c\u6392\u5e8f\u540e\u83b7\u53d6\u7b2c\u4e00\u6761\u8bb0\u5f55\u6765\u5b9e\u73b0\u7684\u3002<\/li>\n<\/ul>\n<p>\u901a\u8fc7\u4f7f\u7528\u6b64\u67e5\u8be2\uff0c\u60a8\u53ef\u4ee5\u4e00\u6b21\u6027\u68c0\u7d22\u591a\u4e2a\u5355\u53f7\u7684\u6700\u65b0\u72b6\u6001\u4fe1\u606f\uff0c\u800c\u65e0\u9700\u591a\u6b21\u5faa\u73af\u67e5\u8be2\uff0c\u4ece\u800c\u63d0\u9ad8\u67e5\u8be2\u6548\u7387\u3002<\/p>\n<p>\u5230\u8fd9\u91cc\uff0c\u6211\u4eec\u4e5f\u5c31\u8bb2\u5b8c\u4e86\u300a\u5982\u4f55\u4e00\u6b21\u6027\u67e5\u8be2\u591a\u4e2a\u5355\u53f7\u7684\u6700\u65b0\u72b6\u6001\uff1f\u300b\u7684\u5185\u5bb9\u4e86\u3002\u4e2a\u4eba\u8ba4\u4e3a\uff0c\u57fa\u7840\u77e5\u8bc6\u7684\u5b66\u4e60\u548c\u5de9\u56fa\uff0c\u662f\u4e3a\u4e86\u66f4\u597d\u7684\u5c06\u5176\u8fd0\u7528\u5230\u9879\u76ee\u4e2d\uff0c\u6b22\u8fce\u5173\u6ce8\u4e3b\u673a\u5b9d\u8d1d\u516c\u4f17\u53f7\uff0c\u5e26\u4f60\u4e86\u89e3\u66f4\u591a\u5173\u4e8e\u7684\u77e5\u8bc6\u70b9\uff01<\/p>\n<dl>\n<dt>\n 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