{"id":200063,"date":"2025-05-06T11:16:15","date_gmt":"2025-05-06T03:16:15","guid":{"rendered":"https:\/\/server.hk\/cnblog\/200063\/"},"modified":"2025-05-06T11:16:15","modified_gmt":"2025-05-06T03:16:15","slug":"update%e6%93%8d%e4%bd%9c%e6%98%af%e5%90%a6%e4%bc%9a%e5%af%b9mysql%e8%a1%a8%e8%bf%9b%e8%a1%8c%e9%94%81%e5%ae%9a%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/200063\/","title":{"rendered":"UPDATE\u64cd\u4f5c\u662f\u5426\u4f1a\u5bf9MySQL\u8868\u8fdb\u884c\u9501\u5b9a\uff1f"},"content":{"rendered":"

<\/b> <\/p>\n

UPDATE\u64cd\u4f5c\u662f\u5426\u4f1a\u5bf9MySQL\u8868\u8fdb\u884c\u9501\u5b9a\uff1f<\/h1>\n

MySQL UPDATE \u8bed\u53e5\u4e00\u822c\u4e0d\u4f1a\u5bfc\u81f4\u6574\u4e2a\u8868\u88ab\u9501\u5b9a\u3002MySQL \u91c7\u7528\u884c\u7ea7\u9501\u673a\u5236\uff0c\u5728\u6267\u884c UPDATE \u8bed\u53e5\u65f6\uff0c\u4ec5\u9501\u5b9a\u9700\u8981\u66f4\u65b0\u7684\u884c\uff0c\u5176\u4ed6\u884c\u4ecd\u53ef\u4f9b\u5176\u4ed6\u7528\u6237\u8bbf\u95ee\u548c\u4fee\u6539\u3002\u8fd9\u79cd\u673a\u5236\u53ef\u4ee5\u51cf\u5c11\u5e76\u53d1\u6027\u95ee\u9898\uff0c\u63d0\u9ad8\u6570\u636e\u5e93\u7684\u6027\u80fd\u548c\u5e76\u53d1\u5904\u7406\u80fd\u529b\u3002\u4f46\u662f\uff0c\u5728\u67d0\u4e9b\u60c5\u51b5\u4e0b\uff0c\u4e0d\u6070\u5f53\u7684\u7d22\u5f15\u6216 WHERE \u6761\u4ef6\u53ef\u80fd\u4f1a\u5bfc\u81f4\u66f4\u591a\u884c\u88ab\u9501\u5b9a\uff0c\u5f71\u54cd\u5176\u4ed6\u7528\u6237\u7684\u8bbf\u95ee\u3002\u56e0\u6b64\uff0c\u5728\u8bbe\u8ba1\u6570\u636e\u5e93\u8868\u7ed3\u6784\u548c\u7f16\u5199 SQL \u8bed\u53e5\u65f6\uff0c\u9700\u8981\u6ce8\u610f\u9009\u62e9\u5408\u9002\u7684\u7d22\u5f15\u548c\u6761\u4ef6\uff0c\u907f\u514d\u4e0d\u5fc5\u8981\u7684\u9501\u5b9a\uff0c\u4ee5\u63d0\u9ad8\u7cfb\u7edf\u7684\u5e76\u53d1\u6027\u80fd\u3002<\/p>\n

MySQL UPDATE\u8bed\u53e5\u662f\u5426\u4f1a\u5bfc\u81f4\u8868\u88ab\u9501\u5b9a\uff1f<\/p>\n

MySQL \u662f\u4e00\u4e2a\u6d41\u884c\u7684\u5173\u7cfb\u578b\u6570\u636e\u5e93\u7ba1\u7406\u7cfb\u7edf\uff0c\u5e7f\u6cdb\u7528\u4e8e\u5404\u79cd\u5e94\u7528\u7a0b\u5e8f\u4e2d\u3002\u5728\u6570\u636e\u5e93\u64cd\u4f5c\u4e2d\uff0cUPDATE \u8bed\u53e5\u7528\u4e8e\u66f4\u65b0\u8868\u4e2d\u7684\u6570\u636e\u3002\u4f46\u662f\uff0c\u4e00\u4e2a\u5e38\u89c1\u7684\u95ee\u9898\u662f\uff0c\u5f53\u6267\u884c UPDATE \u8bed\u53e5\u65f6\uff0c\u4f1a\u4e0d\u4f1a\u5bfc\u81f4\u6574\u4e2a\u8868\u88ab\u9501\u5b9a\uff0c\u5f71\u54cd\u5176\u4ed6\u7528\u6237\u5bf9\u8868\u7684\u8bbf\u95ee\u5462\uff1f\u8ba9\u6211\u4eec\u6df1\u5165\u63a2\u8ba8\u4e00\u4e0b\u3002<\/p>\n

\u9996\u5148\uff0c\u9700\u8981\u4e86\u89e3 MySQL \u4e2d\u7684\u9501\u673a\u5236\u3002MySQL \u652f\u6301\u591a\u79cd\u7c7b\u578b\u7684\u9501\uff0c\u5305\u62ec\u8868\u7ea7\u9501\u548c\u884c\u7ea7\u9501\u3002\u8868\u7ea7\u9501\u4f1a\u9501\u5b9a\u6574\u4e2a\u8868\uff0c\u800c\u884c\u7ea7\u9501\u53ea\u4f1a\u9501\u5b9a\u9700\u8981\u4fee\u6539\u7684\u884c\u3002<\/p>\n

\u5bf9\u4e8e UPDATE \u8bed\u53e5\u6765\u8bf4\uff0cMySQL \u9ed8\u8ba4\u4f7f\u7528\u7684\u662f\u884c\u7ea7\u9501\u3002\u8fd9\u610f\u5473\u7740\uff0c\u5f53\u6267\u884c UPDATE \u8bed\u53e5\u65f6\uff0c\u53ea\u6709\u9700\u8981\u66f4\u65b0\u7684\u884c\u4f1a\u88ab\u9501\u5b9a\uff0c\u5176\u4ed6\u884c\u4ecd\u7136\u53ef\u4ee5\u88ab\u5176\u4ed6\u7528\u6237\u8bbf\u95ee\u548c\u4fee\u6539\u3002\u8fd9\u79cd\u884c\u7ea7\u9501\u7684\u673a\u5236\u53ef\u4ee5\u51cf\u5c11\u6570\u636e\u5e93\u7684\u5e76\u53d1\u6027\u95ee\u9898\uff0c\u63d0\u9ad8\u7cfb\u7edf\u7684\u6027\u80fd\u548c\u5e76\u53d1\u5904\u7406\u80fd\u529b\u3002<\/p>\n

\u4e0b\u9762\u901a\u8fc7\u4e00\u4e2a\u5177\u4f53\u7684\u4ee3\u7801\u793a\u4f8b\u6765\u8bf4\u660e UPDATE \u8bed\u53e5\u662f\u5426\u4f1a\u5bfc\u81f4\u8868\u88ab\u9501\u5b9a\uff1a<\/p>\n

\u5047\u8bbe\u6709\u4e00\u4e2a\u540d\u4e3a users<\/code> \u7684\u8868\uff0c\u5305\u542b\u4ee5\u4e0b\u5b57\u6bb5\uff1a<\/p>\n

CREATE TABLE users (\n    id INT PRIMARY KEY,\n    name VARCHAR(50),\n    age INT\n);<\/pre>\n
\u73b0\u5728\u6211\u4eec\u6267\u884c\u4e00\u4e2a\u7b80\u5355\u7684\u66f4\u65b0\u64cd\u4f5c\uff1a<\/p>\n
UPDATE users SET age = 30 WHERE name = 'Alice';<\/pre>\n
\u5728\u6267\u884c\u4ee5\u4e0a UPDATE \u8bed\u53e5\u65f6\uff0cMySQL \u4f1a\u6839\u636e WHERE \u5b50\u53e5\u6765\u786e\u5b9a\u9700\u8981\u66f4\u65b0\u7684\u884c\uff0c\u5e76\u5bf9\u8fd9\u4e9b\u884c\u8fdb\u884c\u9501\u5b9a\u3002\u5176\u4ed6\u4e0d\u7b26\u5408\u6761\u4ef6\u7684\u884c\u4e0d\u4f1a\u53d7\u5230\u5f71\u54cd\uff0c\u4ecd\u7136\u53ef\u4ee5\u88ab\u5176\u4ed6\u7528\u6237\u8bbf\u95ee\u548c\u4fee\u6539\u3002\u8fd9\u5c31\u5c55\u793a\u4e86 MySQL UPDATE \u8bed\u53e5\u4f7f\u7528\u884c\u7ea7\u9501\u7684\u7279\u70b9\uff0c\u4e0d\u4f1a\u5bfc\u81f4\u6574\u4e2a\u8868\u88ab\u9501\u5b9a\u3002<\/p>\n
\u603b\u7684\u6765\u8bf4\uff0cMySQL \u7684 UPDATE \u8bed\u53e5\u4e00\u822c\u4e0d\u4f1a\u5bfc\u81f4\u6574\u4e2a\u8868\u88ab\u9501\u5b9a\u3002\u4f46\u662f\uff0c\u5728\u67d0\u4e9b\u7279\u5b9a\u60c5\u51b5\u4e0b\uff0c\u5982\u679c\u4f7f\u7528\u4e86\u4e0d\u6070\u5f53\u7684\u7d22\u5f15\u6216 WHERE \u6761\u4ef6\uff0c\u53ef\u80fd\u4f1a\u5bfc\u81f4\u9501\u5b9a\u66f4\u591a\u7684\u884c\uff0c\u5f71\u54cd\u5176\u4ed6\u7528\u6237\u7684\u8bbf\u95ee\u3002\u56e0\u6b64\uff0c\u5728\u8bbe\u8ba1\u6570\u636e\u5e93\u8868\u7ed3\u6784\u548c\u7f16\u5199 SQL \u8bed\u53e5\u65f6\uff0c\u9700\u8981\u6ce8\u610f\u9009\u62e9\u5408\u9002\u7684\u7d22\u5f15\u548c\u6761\u4ef6\uff0c\u907f\u514d\u4e0d\u5fc5\u8981\u7684\u9501\u5b9a\uff0c\u63d0\u9ad8\u7cfb\u7edf\u7684\u5e76\u53d1\u6027\u80fd\u3002<\/p>\n
\u4ee5\u4e0a\u5c31\u662f\u5173\u4e8e MySQL UPDATE \u8bed\u53e5\u662f\u5426\u4f1a\u5bfc\u81f4\u8868\u88ab\u9501\u5b9a\u7684\u8ba8\u8bba\uff0c\u5e0c\u671b\u53ef\u4ee5\u5e2e\u52a9\u60a8\u66f4\u597d\u5730\u7406\u89e3 MySQL \u7684\u9501\u673a\u5236\u548c\u64cd\u4f5c\u65b9\u5f0f\u3002<\/p>\n
\u4ee5\u4e0a\u5c31\u662f\u300aUPDATE\u64cd\u4f5c\u662f\u5426\u4f1a\u5bf9MySQL\u8868\u8fdb\u884c\u9501\u5b9a\uff1f\u300b\u7684\u8be6\u7ec6\u5185\u5bb9\uff0c\u66f4\u591a\u5173\u4e8emysql,Update,\u9501\u5b9a\u7684\u8d44\u6599\u8bf7\u5173\u6ce8\u4e3b\u673a\u5b9d\u8d1d\u516c\u4f17\u53f7\uff01<\/p>\n
\n
\n <\/dt>\n<\/dl>\n","protected":false},"excerpt":{"rendered":"
UPDATE\u64cd\u4f5c\u662f\u5426\u4f1a\u5bf9MySQ...<\/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-200063","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/200063","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=200063"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/200063\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=200063"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=200063"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=200063"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}