{"id":201019,"date":"2025-05-06T08:59:44","date_gmt":"2025-05-06T00:59:44","guid":{"rendered":"https:\/\/server.hk\/cnblog\/201019\/"},"modified":"2025-05-06T08:59:44","modified_gmt":"2025-05-06T00:59:44","slug":"sql-%e4%b8%ad%e5%a6%82%e4%bd%95%e9%81%bf%e5%85%8d-update-%e8%af%ad%e5%8f%a5%e7%9a%84%e6%9b%b4%e6%96%b0%e5%86%b2%e7%aa%81%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/201019\/","title":{"rendered":"SQL \u4e2d\u5982\u4f55\u907f\u514d UPDATE \u8bed\u53e5\u7684\u66f4\u65b0\u51b2\u7a81\uff1f"},"content":{"rendered":"<p><b><\/b> <\/p>\n<h1>SQL \u4e2d\u5982\u4f55\u907f\u514d UPDATE \u8bed\u53e5\u7684\u66f4\u65b0\u51b2\u7a81\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\/20241125\/173253694167446a6d5b063.jpg\" class=\"aligncenter\"><\/p>\n<p><strong>sql \u4e2d\u662f\u5426\u5b58\u5728\u907f\u514d\u66f4\u65b0\u51b2\u7a81\u7684\u8bed\u53e5\uff1f<\/strong><\/p>\n<p>sql \u4e2d\u7684 update \u8bed\u53e5\u63d0\u4f9b\u4e86\u4e0e insert \u8bed\u53e5\u7c7b\u4f3c\u7684\u8bed\u6cd5\uff0c\u7528\u4e8e\u5904\u7406\u66f4\u65b0\u64cd\u4f5c\u3002\u5176\u4e2d\uff0cignore \u5173\u952e\u5b57\u53ef\u7528\u4e8e\u6307\u5b9a\u5f53\u66f4\u65b0\u64cd\u4f5c\u9047\u5230\u51b2\u7a81\u65f6\u4e0d\u7ec8\u6b62\u66f4\u65b0\u8fc7\u7a0b\u3002<\/p>\n<p><strong>update ignore \u8bed\u6cd5\uff1a<\/strong><\/p>\n<pre>UPDATE [LOW_PRIORITY] [IGNORE] table_reference\nSET assignment_list\n[WHERE where_condition]\n[ORDER BY ...]\n[LIMIT row_count]<\/pre>\n<p><strong>ignore \u5173\u952e\u5b57\u884c\u4e3a\uff1a<\/strong><\/p>\n<ul>\n<li>\u6dfb\u52a0 ignore \u5173\u952e\u5b57\u540e\uff0c\u5373\u4f7f\u66f4\u65b0\u8fc7\u7a0b\u4e2d\u51fa\u73b0\u9519\u8bef\uff0cupdate \u8bed\u53e5\u4e5f\u4e0d\u4f1a\u7ec8\u6b62\u3002<\/li>\n<li>ignore \u5173\u952e\u5b57\u4f1a\u5ffd\u7565\u5728\u552f\u4e00\u952e\u503c\u4e0a\u53d1\u751f\u91cd\u590d\u952e\u51b2\u7a81\u7684\u884c\u3002<\/li>\n<li>\u5bf9\u4e8e\u5373\u5c06\u66f4\u65b0\u7684\u6570\u636e\uff0c\u5982\u679c\u8be5\u6570\u636e\u7684\u8f6c\u6362\u4f1a\u9020\u6210\u6570\u636e\u8f6c\u6362\u9519\u8bef\uff0c\u5219\u4f1a\u66f4\u65b0\u4e3a\u6700\u63a5\u8fd1\u7684\u6709\u6548\u503c\u3002<\/li>\n<\/ul>\n<p>\u4eca\u5929\u5e26\u5927\u5bb6\u4e86\u89e3\u4e86\u7684\u76f8\u5173\u77e5\u8bc6\uff0c\u5e0c\u671b\u5bf9\u4f60\u6709\u6240\u5e2e\u52a9\uff1b\u5173\u4e8e\u6570\u636e\u5e93\u7684\u6280\u672f\u77e5\u8bc6\u6211\u4eec\u4f1a\u4e00\u70b9\u70b9\u6df1\u5165\u4ecb\u7ecd\uff0c\u6b22\u8fce\u5927\u5bb6\u5173\u6ce8\u4e3b\u673a\u5b9d\u8d1d\u516c\u4f17\u53f7\uff0c\u4e00\u8d77\u5b66\u4e60\u7f16\u7a0b~<\/p>\n<dl>\n<dt>\n <\/dt>\n<\/dl>\n","protected":false},"excerpt":{"rendered":"<p>SQL \u4e2d\u5982\u4f55\u907f\u514d UPDATE&#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-201019","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/201019","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=201019"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/201019\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=201019"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=201019"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=201019"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}