{"id":200159,"date":"2025-05-06T10:34:06","date_gmt":"2025-05-06T02:34:06","guid":{"rendered":"https:\/\/server.hk\/cnblog\/200159\/"},"modified":"2025-05-06T10:34:06","modified_gmt":"2025-05-06T02:34:06","slug":"%e5%a6%82%e4%bd%95%e6%8c%89%e7%85%a7%e8%ae%a2%e5%8d%95%e7%8a%b6%e6%80%81%e5%af%b9%e8%ae%a2%e5%8d%95%e8%a1%a8%e8%bf%9b%e8%a1%8c%e6%8e%92%e5%ba%8f%ef%bc%8c%e5%b0%86%e5%be%85%e6%93%8d%e4%bd%9c","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/200159\/","title":{"rendered":"\u5982\u4f55\u6309\u7167\u8ba2\u5355\u72b6\u6001\u5bf9\u8ba2\u5355\u8868\u8fdb\u884c\u6392\u5e8f\uff0c\u5c06\u201c\u5f85\u64cd\u4f5c\u201d\u6392\u5728\u6700\u524d\uff0c\u5c06\u201c\u64a4\u9500\u201d\u6392\u5728\u6700\u540e\uff0c\u5176\u4ed6\u72b6\u6001\u6309\u5347\u5e8f\u6392\u5217\uff1f"},"content":{"rendered":"<p><b><\/b> <\/p>\n<h1>\u5982\u4f55\u6309\u7167\u8ba2\u5355\u72b6\u6001\u5bf9\u8ba2\u5355\u8868\u8fdb\u884c\u6392\u5e8f\uff0c\u5c06\u201c\u5f85\u64cd\u4f5c\u201d\u6392\u5728\u6700\u524d\uff0c\u5c06\u201c\u64a4\u9500\u201d\u6392\u5728\u6700\u540e\uff0c\u5176\u4ed6\u72b6\u6001\u6309\u5347\u5e8f\u6392\u5217\uff1f<\/h1>\n<p>\u5b66\u4e60\u8981\u52aa\u529b\uff0c\u4f46\u662f\u4e0d\u8981\u6025\uff01\u4eca\u5929\u7684\u8fd9\u7bc7\u6587\u7ae0\u5c06\u4f1a\u4ecb\u7ecd\u5230\u7b49\u7b49\u77e5\u8bc6\u70b9\uff0c\u5982\u679c\u4f60\u60f3\u6df1\u5165\u5b66\u4e60\uff0c\u53ef\u4ee5\u5173\u6ce8\u6211\uff01\u6211\u4f1a\u6301\u7eed\u66f4\u65b0\u76f8\u5173\u6587\u7ae0\u7684\uff0c\u5e0c\u671b\u5bf9\u5927\u5bb6\u90fd\u80fd\u6709\u6240\u5e2e\u52a9\uff01<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.17golang.com\/uploads\/20241026\/1729925504671c9180cced2.jpg\" class=\"aligncenter\"><\/p>\n<p><strong>\u6839\u636e\u72b6\u6001\u5bf9\u8ba2\u5355\u8fdb\u884c\u6392\u5e8f<\/strong><\/p>\n<p>\u5982\u4f55\u6309\u7167\u8ba2\u5355\u72b6\u6001\u5bf9\u8ba2\u5355\u8868\u8fdb\u884c\u6392\u5e8f\uff0c\u5e76\u59cb\u7ec8\u5c06\u201c-1\u201d\u64a4\u9500\u72b6\u6001\u6392\u5728\u6700\u540e\uff0c\u800c\u201c2\u201d\u5f85\u64cd\u4f5c\u72b6\u6001\u6392\u5728\u6700\u524d\u9762\uff0c\u5176\u4f59\u72b6\u6001\u6309\u5347\u5e8f\u6392\u5217\u5462\uff1f<\/p>\n<p>\u4ee5\u4e0b\u63d0\u4f9b\u4e86 mysql \u89e3\u51b3\u65b9\u6848\uff1a<\/p>\n<pre>select * from (\n    select\n        case when status==2 then 7,\n        when status==-1 then -1\n        end as newStatus,\n        status\n    from m_table\n) m order by newStatus desc;<\/pre>\n<p>\u8be5\u65b9\u6cd5\u521b\u5efa\u4e00\u4e2a\u65b0\u7684\u5217\u201cnewstatus\u201d\uff0c\u5b83\u662f\u539f\u59cb\u72b6\u6001\u7684\u4fee\u6539\u503c\uff0c\u7528\u4e8e\u6392\u5e8f\u3002\u5f53\u72b6\u6001\u4e3a\u201c2\u201d\uff08\u5f85\u64cd\u4f5c\uff09\u65f6\uff0cnewstatus \u88ab\u6620\u5c04\u4e3a\u201c7\u201d\uff0c\u4ece\u800c\u4f7f\u5176\u5728\u6392\u5e8f\u65f6\u6392\u5728\u7b2c\u4e00\u4f4d\u3002\u5f53\u72b6\u6001\u4e3a\u201c-1\u201d\uff08\u64a4\u9500\uff09\u65f6\uff0cnewstatus 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