{"id":174411,"date":"2024-11-07T21:37:22","date_gmt":"2024-11-07T13:37:22","guid":{"rendered":"https:\/\/server.hk\/cnblog\/174411\/"},"modified":"2024-11-07T21:37:23","modified_gmt":"2024-11-07T13:37:23","slug":"%e5%a6%82%e4%bd%95%e8%a7%a3%e6%b1%ba%e4%b8%bb%e9%8d%b5%e7%b4%a2%e5%bc%95%e9%87%8d%e8%a4%87%e7%9a%84%e6%95%b8%e6%93%9a%e5%ba%ab%e5%95%8f%e9%a1%8c-%e4%b8%bb%e9%8d%b5%e7%b4%a2%e5%bc%95%e6%9c%89%e9%87%8d","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/174411\/","title":{"rendered":"\u5982\u4f55\u89e3\u6c7a\u4e3b\u9375\u7d22\u5f15\u91cd\u8907\u7684\u6578\u64da\u5eab\u554f\u984c (\u4e3b\u9375\u7d22\u5f15\u6709\u91cd\u8907\u6578\u64da\u5eab)"},"content":{"rendered":"<h1 id=\"%e5%a6%82%e4%bd%95%e8%a7%a3%e6%b1%ba%e4%b8%bb%e9%8d%b5%e7%b4%a2%e5%bc%95%e9%87%8d%e8%a4%87%e7%9a%84%e6%95%b8%e6%93%9a%e5%ba%ab%e5%95%8f%e9%a1%8c-%e4%b8%bb%e9%8d%b5%e7%b4%a2%e5%bc%95%e6%9c%89%e9%87%8d-sywQHRGRLJ\">\u5982\u4f55\u89e3\u6c7a\u4e3b\u9375\u7d22\u5f15\u91cd\u8907\u7684\u6578\u64da\u5eab\u554f\u984c (\u4e3b\u9375\u7d22\u5f15\u6709\u91cd\u8907\u6578\u64da\u5eab)<\/h1>\n<p>\u5728\u6578\u64da\u5eab\u7ba1\u7406\u4e2d\uff0c\u4e3b\u9375\u7d22\u5f15\u662f\u78ba\u4fdd\u6578\u64da\u552f\u4e00\u6027\u548c\u5b8c\u6574\u6027\u7684\u91cd\u8981\u5de5\u5177\u3002\u7136\u800c\uff0c\u7576\u4e3b\u9375\u7d22\u5f15\u51fa\u73fe\u91cd\u8907\u6642\uff0c\u5c07\u6703\u5c0e\u81f4\u6578\u64da\u5eab\u64cd\u4f5c\u7684\u56f0\u96e3\uff0c\u751a\u81f3\u5f71\u97ff\u61c9\u7528\u7a0b\u5e8f\u7684\u6b63\u5e38\u904b\u884c\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u5982\u4f55\u8b58\u5225\u548c\u89e3\u6c7a\u4e3b\u9375\u7d22\u5f15\u91cd\u8907\u7684\u554f\u984c\uff0c\u4e26\u63d0\u4f9b\u4e00\u4e9b\u5be6\u7528\u7684\u89e3\u6c7a\u65b9\u6848\u3002<\/p>\n<h2 id=\"%e4%b8%bb%e9%8d%b5%e7%b4%a2%e5%bc%95%e7%9a%84%e5%9f%ba%e6%9c%ac%e6%a6%82%e5%bf%b5-sywQHRGRLJ\">\u4e3b\u9375\u7d22\u5f15\u7684\u57fa\u672c\u6982\u5ff5<\/h2>\n<p>\u4e3b\u9375\u662f\u6578\u64da\u5eab\u8868\u4e2d\u7528\u4f86\u552f\u4e00\u6a19\u8b58\u6bcf\u4e00\u884c\u6578\u64da\u7684\u5b57\u6bb5\u3002\u6bcf\u500b\u8868\u53ea\u80fd\u6709\u4e00\u500b\u4e3b\u9375\uff0c\u4e26\u4e14\u4e3b\u9375\u7684\u503c\u5fc5\u9808\u662f\u552f\u4e00\u7684\u3002\u4e3b\u9375\u7d22\u5f15\u5247\u662f\u57fa\u65bc\u4e3b\u9375\u5b57\u6bb5\u5efa\u7acb\u7684\u7d22\u5f15\uff0c\u80fd\u5920\u52a0\u901f\u67e5\u8a62\u548c\u6578\u64da\u64cd\u4f5c\u3002<\/p>\n<h2 id=\"%e9%87%8d%e8%a4%87%e4%b8%bb%e9%8d%b5%e7%b4%a2%e5%bc%95%e7%9a%84%e5%8e%9f%e5%9b%a0-sywQHRGRLJ\">\u91cd\u8907\u4e3b\u9375\u7d22\u5f15\u7684\u539f\u56e0<\/h2>\n<p>\u4e3b\u9375\u7d22\u5f15\u91cd\u8907\u7684\u539f\u56e0\u53ef\u80fd\u6709\u591a\u7a2e\uff0c\u4ee5\u4e0b\u662f\u4e00\u4e9b\u5e38\u898b\u7684\u60c5\u6cc1\uff1a<\/p>\n<ul>\n<li><strong>\u6578\u64da\u5c0e\u5165\u932f\u8aa4\uff1a<\/strong>\u5728\u6279\u91cf\u5c0e\u5165\u6578\u64da\u6642\uff0c\u53ef\u80fd\u56e0\u70ba\u6578\u64da\u6e90\u7684\u554f\u984c\u5c0e\u81f4\u91cd\u8907\u7684\u4e3b\u9375\u503c\u3002<\/li>\n<li><strong>\u61c9\u7528\u7a0b\u5e8f\u908f\u8f2f\u932f\u8aa4\uff1a<\/strong>\u5982\u679c\u61c9\u7528\u7a0b\u5e8f\u5728\u63d2\u5165\u6578\u64da\u6642\u672a\u80fd\u6b63\u78ba\u6aa2\u67e5\u4e3b\u9375\u7684\u552f\u4e00\u6027\uff0c\u5247\u53ef\u80fd\u6703\u5c0e\u81f4\u91cd\u8907\u3002<\/li>\n<li><strong>\u6578\u64da\u5eab\u8a2d\u8a08\u4e0d\u7576\uff1a<\/strong>\u5728\u8a2d\u8a08\u6578\u64da\u5eab\u6642\uff0c\u5982\u679c\u672a\u80fd\u5408\u7406\u898f\u5283\u4e3b\u9375\uff0c\u53ef\u80fd\u6703\u5c0e\u81f4\u91cd\u8907\u7684\u60c5\u6cc1\u3002<\/li>\n<\/ul>\n<h2 id=\"%e5%a6%82%e4%bd%95%e8%ad%98%e5%88%a5%e9%87%8d%e8%a4%87%e7%9a%84%e4%b8%bb%e9%8d%b5%e7%b4%a2%e5%bc%95-sywQHRGRLJ\">\u5982\u4f55\u8b58\u5225\u91cd\u8907\u7684\u4e3b\u9375\u7d22\u5f15<\/h2>\n<p>\u8981\u8b58\u5225\u6578\u64da\u5eab\u4e2d\u91cd\u8907\u7684\u4e3b\u9375\u7d22\u5f15\uff0c\u53ef\u4ee5\u4f7f\u7528 SQL \u67e5\u8a62\u4f86\u6aa2\u67e5\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u793a\u4f8b\u67e5\u8a62\uff0c\u8a72\u67e5\u8a62\u5c07\u627e\u51fa\u91cd\u8907\u7684\u4e3b\u9375\u503c\uff1a<\/p>\n<pre><code>SELECT \u4e3b\u9375\u5b57\u6bb5, COUNT(*)\nFROM \u8868\u540d\nGROUP BY \u4e3b\u9375\u5b57\u6bb5\nHAVING COUNT(*) &gt; 1;<\/code><\/pre>\n<p>\u9019\u6bb5 SQL \u8a9e\u53e5\u5c07\u8fd4\u56de\u6240\u6709\u91cd\u8907\u7684\u4e3b\u9375\u503c\u53ca\u5176\u51fa\u73fe\u7684\u6b21\u6578\uff0c\u5e6b\u52a9\u7ba1\u7406\u54e1\u5feb\u901f\u5b9a\u4f4d\u554f\u984c\u3002<\/p>\n<h2 id=\"%e8%a7%a3%e6%b1%ba%e9%87%8d%e8%a4%87%e4%b8%bb%e9%8d%b5%e7%b4%a2%e5%bc%95%e7%9a%84%e6%96%b9%e6%a1%88-sywQHRGRLJ\">\u89e3\u6c7a\u91cd\u8907\u4e3b\u9375\u7d22\u5f15\u7684\u65b9\u6848<\/h2>\n<p>\u4e00\u65e6\u8b58\u5225\u51fa\u91cd\u8907\u7684\u4e3b\u9375\u7d22\u5f15\uff0c\u63a5\u4e0b\u4f86\u9700\u8981\u63a1\u53d6\u63aa\u65bd\u4f86\u89e3\u6c7a\u9019\u4e00\u554f\u984c\u3002\u4ee5\u4e0b\u662f\u5e7e\u7a2e\u5e38\u898b\u7684\u89e3\u6c7a\u65b9\u6848\uff1a<\/p>\n<h3 id=\"1-%e5%88%aa%e9%99%a4%e9%87%8d%e8%a4%87%e6%95%b8%e6%93%9a-sywQHRGRLJ\">1. \u522a\u9664\u91cd\u8907\u6578\u64da<\/h3>\n<p>\u5982\u679c\u91cd\u8907\u7684\u6578\u64da\u4e0d\u518d\u9700\u8981\uff0c\u53ef\u4ee5\u9078\u64c7\u522a\u9664\u591a\u9918\u7684\u884c\u3002\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b SQL \u8a9e\u53e5\u4f86\u522a\u9664\u91cd\u8907\u7684\u6578\u64da\uff1a<\/p>\n<pre><code>DELETE FROM \u8868\u540d\nWHERE \u4e3b\u9375\u5b57\u6bb5 IN (\n    SELECT \u4e3b\u9375\u5b57\u6bb5\n    FROM (\n        SELECT \u4e3b\u9375\u5b57\u6bb5, ROW_NUMBER() OVER (PARTITION BY \u4e3b\u9375\u5b57\u6bb5 ORDER BY (SELECT NULL)) AS row_num\n        FROM \u8868\u540d\n    ) AS temp\n    WHERE row_num &gt; 1\n);<\/code><\/pre>\n<p>\u9019\u6bb5\u4ee3\u78bc\u5c07\u4fdd\u7559\u6bcf\u7d44\u91cd\u8907\u4e3b\u9375\u4e2d\u7684\u7b2c\u4e00\u500b\uff0c\u4e26\u522a\u9664\u5176\u9918\u7684\u884c\u3002<\/p>\n<h3 id=\"2-%e6%9b%b4%e6%96%b0%e9%87%8d%e8%a4%87%e6%95%b8%e6%93%9a-sywQHRGRLJ\">2. \u66f4\u65b0\u91cd\u8907\u6578\u64da<\/h3>\n<p>\u5982\u679c\u91cd\u8907\u7684\u6578\u64da\u4ecd\u7136\u9700\u8981\u4fdd\u7559\uff0c\u53ef\u4ee5\u8003\u616e\u66f4\u65b0\u9019\u4e9b\u6578\u64da\uff0c\u4f7f\u5176\u4e3b\u9375\u503c\u552f\u4e00\u3002\u9019\u53ef\u4ee5\u901a\u904e\u751f\u6210\u65b0\u7684\u552f\u4e00\u503c\u4f86\u5be6\u73fe\u3002<\/p>\n<h3 id=\"3-%e4%bf%ae%e6%94%b9%e6%95%b8%e6%93%9a%e5%ba%ab%e8%a8%ad%e8%a8%88-sywQHRGRLJ\">3. \u4fee\u6539\u6578\u64da\u5eab\u8a2d\u8a08<\/h3>\n<p>\u5728\u67d0\u4e9b\u60c5\u6cc1\u4e0b\uff0c\u53ef\u80fd\u9700\u8981\u91cd\u65b0\u8a2d\u8a08\u6578\u64da\u5eab\u7d50\u69cb\uff0c\u4ee5\u907f\u514d\u672a\u4f86\u51fa\u73fe\u91cd\u8907\u7684\u4e3b\u9375\u7d22\u5f15\u3002\u4f8b\u5982\uff0c\u53ef\u4ee5\u8003\u616e\u4f7f\u7528\u8907\u5408\u4e3b\u9375\u6216\u5f15\u5165\u984d\u5916\u7684\u552f\u4e00\u7d04\u675f\u3002<\/p>\n<h2 id=\"%e7%b5%90%e8%ab%96-sywQHRGRLJ\">\u7d50\u8ad6<\/h2>\n<p>\u4e3b\u9375\u7d22\u5f15\u91cd\u8907\u7684\u554f\u984c\u5728\u6578\u64da\u5eab\u7ba1\u7406\u4e2d\u662f\u5e38\u898b\u7684\u6311\u6230\uff0c\u4f46\u901a\u904e\u6709\u6548\u7684\u8b58\u5225\u548c\u89e3\u6c7a\u65b9\u6848\uff0c\u53ef\u4ee5\u4fdd\u6301\u6578\u64da\u7684\u5b8c\u6574\u6027\u548c\u4e00\u81f4\u6027\u3002\u5b9a\u671f\u6aa2\u67e5\u6578\u64da\u5eab\u4e2d\u7684\u4e3b\u9375\u7d22\u5f15\uff0c\u4e26\u78ba\u4fdd\u61c9\u7528\u7a0b\u5e8f\u908f\u8f2f\u7684\u6b63\u78ba\u6027\uff0c\u662f\u9632\u6b62\u6b64\u985e\u554f\u984c\u767c\u751f\u7684\u95dc\u9375\u3002<\/p>\n<p>\u5982\u9700\u4e86\u89e3\u66f4\u591a\u6709\u95dc\u6578\u64da\u5eab\u7ba1\u7406\u548c\u512a\u5316\u7684\u8cc7\u8a0a\uff0c\u8acb\u8a2a\u554f\u6211\u5011\u7684\u7db2\u7ad9 <a href=\"https:\/\/server.hk\">Server.HK<\/a>\uff0c\u6211\u5011\u63d0\u4f9b\u5404\u7a2e <a href=\"https:\/\/server.hk\">VPS<\/a> \u548c <a href=\"https:\/\/server.hk\">\u9999\u6e2f\u4f3a\u670d\u5668<\/a> \u89e3\u6c7a\u65b9\u6848\uff0c\u5e6b\u52a9\u60a8\u66f4\u597d\u5730\u7ba1\u7406\u60a8\u7684\u6578\u64da\u5eab\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5b78\u7fd2\u5982\u4f55\u6709\u6548\u89e3\u6c7a\u4e3b\u9375\u7d22\u5f15\u91cd\u8907\u7684\u6578\u64da\u5eab\u554f\u984c\uff0c\u78ba\u4fdd\u6578\u64da\u5b8c\u6574\u6027\u8207\u7cfb\u7d71\u6027\u80fd\u3002<\/p>\n","protected":false},"author":0,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[101],"tags":[],"class_list":["post-174411","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/174411","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"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=174411"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/174411\/revisions"}],"predecessor-version":[{"id":174412,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/174411\/revisions\/174412"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=174411"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=174411"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=174411"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}