{"id":200833,"date":"2025-05-06T11:35:24","date_gmt":"2025-05-06T03:35:24","guid":{"rendered":"https:\/\/server.hk\/cnblog\/200833\/"},"modified":"2025-05-06T11:35:24","modified_gmt":"2025-05-06T03:35:24","slug":"mysql-%e5%ad%90%e6%9f%a5%e8%af%a2%e4%b8%ad%e6%9b%b4%e6%96%b0%e5%90%8c%e4%b8%80%e8%a1%a8%ef%bc%8c%e5%a6%82%e4%bd%95%e8%a7%84%e9%81%bf%e5%86%b2%e7%aa%81%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/200833\/","title":{"rendered":"MySQL \u5b50\u67e5\u8be2\u4e2d\u66f4\u65b0\u540c\u4e00\u8868\uff0c\u5982\u4f55\u89c4\u907f\u51b2\u7a81\uff1f"},"content":{"rendered":"<p><b><\/b> <\/p>\n<h1>MySQL \u5b50\u67e5\u8be2\u4e2d\u66f4\u65b0\u540c\u4e00\u8868\uff0c\u5982\u4f55\u89c4\u907f\u51b2\u7a81\uff1f<\/h1>\n<p>\u6570\u636e\u5e93\u5c0f\u767d\u4e00\u679a\uff0c\u6b63\u5728\u4e0d\u65ad\u5b66\u4e60\u79ef\u7d2f\u77e5\u8bc6\uff0c\u73b0\u5c06\u5b66\u4e60\u5230\u7684\u77e5\u8bc6\u8bb0\u5f55\u4e00\u4e0b\uff0c\u4e5f\u662f\u5c06\u6211\u7684\u6240\u5f97\u5206\u4eab\u7ed9\u5927\u5bb6\uff01\u800c\u4eca\u5929\u8fd9\u7bc7\u6587\u7ae0\u300aMySQL \u5b50\u67e5\u8be2\u4e2d\u66f4\u65b0\u540c\u4e00\u8868\uff0c\u5982\u4f55\u89c4\u907f\u51b2\u7a81\uff1f\u300b\u5e26\u5927\u5bb6\u6765\u4e86\u89e3\u4e00\u4e0b##content_title##\uff0c\u5e0c\u671b\u5bf9\u5927\u5bb6\u7684\u77e5\u8bc6\u79ef\u7d2f\u6709\u6240\u5e2e\u52a9\uff0c\u4ece\u800c\u5f25\u8865\u81ea\u5df1\u7684\u4e0d\u8db3\uff0c\u52a9\u529b\u5b9e\u6218\u5f00\u53d1\uff01<\/p>\n<p><\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.17golang.com\/uploads\/20241116\/173174333067384e62cc0f9.jpg\" class=\"aligncenter\"><\/p>\n<p><strong>mysql \u5b50\u67e5\u8be2\u4e0e\u66f4\u65b0\u8868\u51b2\u7a81\u7684\u89e3\u51b3\u4e4b\u9053<\/strong><\/p>\n<p>\u5728 mysql \u4e2d\uff0c\u4f7f\u7528 delete \u4e4b\u7c7b\u7684\u66f4\u65b0\u8bed\u53e5\u65f6\uff0c\u4f1a\u9047\u5230\u4e00\u4e2a\u72ec\u7279\u7684\u95ee\u9898\uff1a\u8981\u66f4\u65b0\u7684\u8868\u548c\u5b50\u67e5\u8be2 from \u4e2d\u7684\u8868\u4e0d\u80fd\u662f\u540c\u4e00\u5f20\u8868\u3002\u8fd9\u4e00\u7ea6\u675f\u53ea\u5728 mysql \u4e2d\u5b58\u5728\uff0c\u5176\u4ed6\u4e3b\u6d41\u6570\u636e\u5e93\u5e76\u65e0\u6b64\u9650\u5236\u3002<\/p>\n<p>\u89e3\u51b3\u8fd9\u4e00\u95ee\u9898\u7684\u65b9\u6cd5\u662f\u4f7f\u7528\u591a\u8868\u66f4\u65b0\uff0c\u5176\u4e2d\u4e00\u5f20\u8868\u6d3e\u751f\u81ea\u9700\u8981\u66f4\u65b0\u7684\u8868\uff0c\u5e76\u4f7f\u7528\u522b\u540d\u5f15\u7528\u6d3e\u751f\u8868\u3002\u4f8b\u5982\uff0c\u4ee5\u4e0b\u4ee3\u7801\u4e2d\uff0cselect \u5b50\u67e5\u8be2\u7684\u6d3e\u751f\u8868\u7531\u522b\u540d t \u5f15\u7528\uff0c\u4ece\u800c\u907f\u514d\u4e86\u76f4\u63a5\u66f4\u65b0\u548c\u5b50\u67e5\u8be2 from \u8868\u51b2\u7a81\u7684\u95ee\u9898\uff1a<\/p>\n<pre>DELETE FROM sys_post WHERE post_id NOT IN (\n  **SELECT t.min_id FROM (**\n    SELECT MIN(post_id) AS min_id FROM sys_post GROUP BY post_name \n  **) t**\n);<\/pre>\n<p>\u503c\u5f97\u6ce8\u610f\u7684\u662f\uff0cmysql \u5b98\u65b9\u867d\u7136\u63d0\u4f9b\u4e86\u89e3\u51b3\u65b9\u6cd5\uff0c\u4f46\u5e76\u672a\u8bf4\u660e\u5236\u5b9a\u8fd9\u4e00\u7ea6\u675f\u7684\u539f\u56e0\u3002<\/p>\n<p>\u4ee5\u4e0a\u5c31\u662f\u300aMySQL \u5b50\u67e5\u8be2\u4e2d\u66f4\u65b0\u540c\u4e00\u8868\uff0c\u5982\u4f55\u89c4\u907f\u51b2\u7a81\uff1f\u300b\u7684\u8be6\u7ec6\u5185\u5bb9\uff0c\u66f4\u591a\u5173\u4e8e\u7684\u8d44\u6599\u8bf7\u5173\u6ce8\u4e3b\u673a\u5b9d\u8d1d\u516c\u4f17\u53f7\uff01<\/p>\n<dl>\n<dt>\n <\/dt>\n<\/dl>\n","protected":false},"excerpt":{"rendered":"<p>MySQL \u5b50\u67e5\u8be2\u4e2d\u66f4\u65b0\u540c\u4e00\u8868\uff0c&#46;&#46;&#46;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[101],"tags":[],"class_list":["post-200833","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/200833","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=200833"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/200833\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=200833"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=200833"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=200833"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}