{"id":200872,"date":"2025-05-06T09:35:48","date_gmt":"2025-05-06T01:35:48","guid":{"rendered":"https:\/\/server.hk\/cnblog\/200872\/"},"modified":"2025-05-06T09:35:48","modified_gmt":"2025-05-06T01:35:48","slug":"%e5%a6%82%e4%bd%95%e4%bd%bf%e7%94%a8-update-%e8%af%ad%e5%8f%a5%e6%89%b9%e9%87%8f%e4%bf%ae%e6%94%b9-mysql-%e8%a1%a8%e6%a0%bc%e6%95%b0%e6%8d%ae%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/200872\/","title":{"rendered":"\u5982\u4f55\u4f7f\u7528 UPDATE \u8bed\u53e5\u6279\u91cf\u4fee\u6539 MySQL \u8868\u683c\u6570\u636e\uff1f"},"content":{"rendered":"<p><b><\/b> <\/p>\n<h1>\u5982\u4f55\u4f7f\u7528 UPDATE \u8bed\u53e5\u6279\u91cf\u4fee\u6539 MySQL \u8868\u683c\u6570\u636e\uff1f<\/h1>\n<p>\u73cd\u60dc\u65f6\u95f4\uff0c\u52e4\u594b\u5b66\u4e60\uff01\u4eca\u5929\u7ed9\u5927\u5bb6\u5e26\u6765\uff0c\u6b63\u6587\u5185\u5bb9\u4e3b\u8981\u6d89\u53ca\u5230\u7b49\u7b49\uff0c\u5982\u679c\u4f60\u6b63\u5728\u5b66\u4e60\uff0c\u6216\u8005\u662f\u5bf9\u6709\u7591\u95ee\uff0c\u6b22\u8fce\u5927\u5bb6\u5173\u6ce8\u6211\uff01\u540e\u9762\u6211\u4f1a\u6301\u7eed\u66f4\u65b0\u76f8\u5173\u5185\u5bb9\u7684\uff0c\u5e0c\u671b\u90fd\u80fd\u5e2e\u5230\u6b63\u5728\u5b66\u4e60\u7684\u5927\u5bb6\uff01<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.17golang.com\/uploads\/20241118\/1731915058673aed3242a2a.jpg\" class=\"aligncenter\"><\/p>\n<p><strong>\u6279\u91cf\u4fee\u6539 mysql \u8868\u683c\u4e2d\u7684\u6570\u636e<\/strong><\/p>\n<p>\u5728 mysql \u4e2d\uff0c\u53ef\u4ee5\u901a\u8fc7 update \u8bed\u53e5\u5b9e\u73b0\u5bf9\u8868\u683c\u6570\u636e\u7684\u6279\u91cf\u4fee\u6539\u3002\u5177\u4f53\u64cd\u4f5c\u6b65\u9aa4\u5982\u4e0b\uff1a<\/p>\n<pre>update \u8868\u683c\u540d\nset \u5217\u540d = \u65b0\u503c\nwhere \u5217\u540d = \u65e7\u503c<\/pre>\n<p>\u4f8b\u5982\uff0c\u8981\u4fee\u6539 user_info \u8868\u683c\u4e2d column_a \u4e3a a \u7684\u6240\u6709\u8bb0\u5f55\uff0c\u5c06 column_b \u4fee\u6539\u4e3a b\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u8bed\u53e5\uff1a<\/p>\n<pre>UPDATE user_info\nSET column_b = 'b'\nWHERE column_a = 'a'<\/pre>\n<p>\u6267\u884c\u6b64\u8bed\u53e5\u540e\uff0cuser_info \u8868\u683c\u4e2d column_a \u4e3a a \u7684\u6240\u6709\u8bb0\u5f55\u7684 column_b \u5b57\u6bb5\u90fd\u5c06\u88ab\u4fee\u6539\u4e3a b\u3002<\/p>\n<p>\u4ee5\u4e0a\u5c31\u662f\u672c\u6587\u7684\u5168\u90e8\u5185\u5bb9\u4e86\uff0c\u662f\u5426\u6709\u987a\u5229\u5e2e\u52a9\u4f60\u89e3\u51b3\u95ee\u9898\uff1f\u82e5\u662f\u80fd\u7ed9\u4f60\u5e26\u6765\u5b66\u4e60\u4e0a\u7684\u5e2e\u52a9\uff0c\u8bf7\u5927\u5bb6\u591a\u591a\u652f\u6301\u4e3b\u673a\u5b9d\u8d1d\uff01\u66f4\u591a\u5173\u4e8e\u6570\u636e\u5e93\u7684\u76f8\u5173\u77e5\u8bc6\uff0c\u4e5f\u53ef\u5173\u6ce8\u4e3b\u673a\u5b9d\u8d1d\u516c\u4f17\u53f7\u3002<\/p>\n<dl>\n<dt>\n <\/dt>\n<\/dl>\n","protected":false},"excerpt":{"rendered":"<p>\u5982\u4f55\u4f7f\u7528 UPDATE \u8bed\u53e5\u6279\u91cf&#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-200872","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/200872","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=200872"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/200872\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=200872"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=200872"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=200872"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}