{"id":200072,"date":"2025-05-06T10:50:16","date_gmt":"2025-05-06T02:50:16","guid":{"rendered":"https:\/\/server.hk\/cnblog\/200072\/"},"modified":"2025-05-06T10:50:16","modified_gmt":"2025-05-06T02:50:16","slug":"update%e6%93%8d%e4%bd%9c%e6%98%af%e5%90%a6%e4%bc%9a%e5%af%bc%e8%87%b4mysql%e8%a1%a8%e8%a2%ab%e9%94%81%e5%ae%9a%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/200072\/","title":{"rendered":"UPDATE\u64cd\u4f5c\u662f\u5426\u4f1a\u5bfc\u81f4MySQL\u8868\u88ab\u9501\u5b9a\uff1f"},"content":{"rendered":"

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

UPDATE\u64cd\u4f5c\u662f\u5426\u4f1a\u5bfc\u81f4MySQL\u8868\u88ab\u9501\u5b9a\uff1f<\/h1>\n

MySQL\u4e2d\u7684UPDATE\u64cd\u4f5c\u53ef\u80fd\u5bfc\u81f4\u8868\u9501\u5b9a\uff0c\u5f71\u54cd\u5e76\u53d1\u64cd\u4f5c\u7684\u6548\u7387\u3002\u5f53\u8868\u4e2d\u6570\u636e\u91cf\u8f83\u5927\u6216\u7f3a\u4e4f\u9002\u5f53\u7d22\u5f15\u65f6\uff0cUPDATE\u64cd\u4f5c\u53ef\u80fd\u4f1a\u626b\u63cf\u6574\u4e2a\u8868\uff0c\u5bfc\u81f4\u8868\u7ea7\u9501\u5b9a\u3002\u4e3a\u4e86\u907f\u514d\u6b64\u95ee\u9898\uff0c\u53ef\u901a\u8fc7\u4ee5\u4e0b\u65b9\u6cd5\u4f18\u5316\uff1a\u5efa\u7acb\u7d22\u5f15\u3001\u907f\u514d\u4f7f\u7528\u51fd\u6570\u6216\u8ba1\u7b97\u3001\u91c7\u7528\u4e8b\u52a1\u63a7\u5236\u3002\u901a\u8fc7\u8fd9\u4e9b\u4f18\u5316\uff0c\u53ef\u4ee5\u964d\u4f4e\u8868\u9501\u5b9a\u7684\u98ce\u9669\uff0c\u63d0\u9ad8\u6570\u636e\u5e93\u7684\u5e76\u53d1\u5904\u7406\u80fd\u529b\u3002<\/p>\n

MySQL\u4e2d\u7684UPDATE\u64cd\u4f5c\u662f\u5426\u4f1a\u5f15\u8d77\u8868\u9501\u5b9a\uff1f<\/p>\n

\u5728MySQL\u6570\u636e\u5e93\u4e2d\uff0cUPDATE\u64cd\u4f5c\u662f\u7528\u6765\u4fee\u6539\u8868\u4e2d\u5df2\u5b58\u5728\u7684\u6570\u636e\u8bb0\u5f55\u7684\u4e00\u79cd\u64cd\u4f5c\u3002\u4f46\u662f\uff0c\u5f53\u6267\u884cUPDATE\u64cd\u4f5c\u65f6\uff0c\u662f\u5426\u4f1a\u5f15\u8d77\u8868\u9501\u5b9a\u5462\uff1f\u7b54\u6848\u662f\uff1a\u90e8\u5206\u60c5\u51b5\u4e0b\u662f\u4f1a\u5f15\u8d77\u8868\u9501\u5b9a\u7684\u3002\u4ee5\u4e0b\u5c06\u8bf4\u660eUPDATE\u64cd\u4f5c\u5728MySQL\u4e2d\u7684\u8868\u9501\u5b9a\u95ee\u9898\uff0c\u5e76\u63d0\u4f9b\u5177\u4f53\u7684\u4ee3\u7801\u793a\u4f8b\u6765\u6f14\u793a\u3002<\/p>\n

\u5728MySQL\u4e2d\uff0c\u5bf9\u8868\u7684\u64cd\u4f5c\u4f1a\u6d89\u53ca\u5230\u4e00\u4e9b\u9501\u7684\u6982\u5ff5\uff0c\u4e3b\u8981\u5305\u62ec\u8868\u7ea7\u9501\u548c\u884c\u7ea7\u9501\u3002\u8868\u7ea7\u9501\u4f1a\u9501\u5b9a\u6574\u4e2a\u8868\uff0c\u800c\u884c\u7ea7\u9501\u5219\u662f\u53ea\u9488\u5bf9\u8868\u4e2d\u7684\u67d0\u4e00\u884c\u6570\u636e\u8fdb\u884c\u9501\u5b9a\u3002\u5f53\u6267\u884cUPDATE\u64cd\u4f5c\u65f6\uff0c\u5982\u679c\u6ca1\u6709\u5408\u9002\u7684\u7d22\u5f15\u6216\u8005\u9501\u5b9a\u65b9\u5f0f\u4e0d\u5f53\uff0c\u5219\u53ef\u80fd\u4f1a\u5bfc\u81f4\u8868\u7ea7\u9501\u5b9a\uff0c\u4ece\u800c\u5f71\u54cd\u5230\u5176\u4ed6\u5e76\u53d1\u64cd\u4f5c\u7684\u6267\u884c\u6548\u7387\u3002<\/p>\n

\u4e0b\u9762\u662f\u4e00\u4e2a\u5177\u4f53\u7684\u4ee3\u7801\u793a\u4f8b\u6765\u6f14\u793aUPDATE\u64cd\u4f5c\u53ef\u80fd\u5f15\u8d77\u8868\u9501\u5b9a\u7684\u60c5\u51b5\uff1a<\/p>\n

\u5047\u8bbe\u6709\u4e00\u4e2a\u540d\u4e3auser<\/code>\u7684\u8868\uff0c\u5b58\u50a8\u4e86\u7528\u6237\u7684\u4fe1\u606f\uff0c\u5305\u62ecid<\/code>\u548cname<\/code>\u4e24\u4e2a\u5b57\u6bb5\u3002\u6211\u4eec\u73b0\u5728\u9700\u8981\u5bf9user<\/code>\u8868\u4e2d\u7684\u67d0\u4e00\u884c\u6570\u636e\u8fdb\u884c\u66f4\u65b0\u64cd\u4f5c\uff1a<\/p>\n

UPDATE user SET name = 'Alice' WHERE id = 1;<\/pre>\n
\u5728\u4e0a\u9762\u7684\u4ee3\u7801\u4e2d\uff0c\u6211\u4eec\u5bf9id<\/code>\u4e3a1\u7684\u7528\u6237\u7684name<\/code>\u5b57\u6bb5\u8fdb\u884c\u4e86\u66f4\u65b0\u64cd\u4f5c\u3002\u5982\u679c\u8868\u4e2d\u7684id<\/code>\u5b57\u6bb5\u6ca1\u6709\u5efa\u7acb\u7d22\u5f15\uff0c\u6216\u8005\u8868\u4e2d\u7684\u6570\u636e\u91cf\u6bd4\u8f83\u5927\uff0c\u90a3\u4e48\u6267\u884c\u8fd9\u6761UPDATE\u8bed\u53e5\u65f6\u5c31\u6709\u53ef\u80fd\u5f15\u8d77\u8868\u7ea7\u9501\u5b9a\u3002\u56e0\u4e3aMySQL\u5728\u6267\u884cUPDATE\u64cd\u4f5c\u65f6\u4f1a\u5bf9\u6574\u4e2a\u8868\u8fdb\u884c\u626b\u63cf\uff0c\u5982\u679c\u6ca1\u6709\u5408\u9002\u7684\u7d22\u5f15\uff0c\u5c31\u4f1a\u9501\u5b9a\u6574\u4e2a\u8868\uff0c\u5bfc\u81f4\u5176\u4ed6\u67e5\u8be2\u6216\u64cd\u4f5c\u7684\u963b\u585e\u3002<\/p>\n
\u4e3a\u4e86\u907f\u514dUPDATE\u64cd\u4f5c\u5f15\u8d77\u8868\u9501\u5b9a\u7684\u60c5\u51b5\uff0c\u6211\u4eec\u53ef\u4ee5\u91c7\u53d6\u4ee5\u4e0b\u51e0\u79cd\u65b9\u6cd5\uff1a<\/p>\n
    \n
  1. \u4e3a\u7ecf\u5e38\u88ab\u66f4\u65b0\u7684\u5b57\u6bb5\u5efa\u7acb\u7d22\u5f15\uff1a\u5728\u4e0a\u9762\u7684\u4f8b\u5b50\u4e2d\uff0c\u53ef\u4ee5\u4e3aid<\/code>\u5b57\u6bb5\u5efa\u7acb\u7d22\u5f15\uff0c\u8fd9\u6837\u5728\u6267\u884cUPDATE\u64cd\u4f5c\u65f6\u5c31\u80fd\u591f\u5feb\u901f\u5b9a\u4f4d\u5230\u76ee\u6807\u884c\uff0c\u51cf\u5c11\u9501\u5b9a\u7684\u8303\u56f4\u3002<\/li>\n
  2. \u5c3d\u91cf\u907f\u514d\u5728UPDATE\u8bed\u53e5\u4e2d\u4f7f\u7528\u51fd\u6570\u6216\u8ba1\u7b97\uff1a\u907f\u514d\u5728UPDATE\u8bed\u53e5\u4e2d\u5bf9\u5b57\u6bb5\u8fdb\u884c\u51fd\u6570\u8fd0\u7b97\u6216\u8005\u590d\u6742\u8ba1\u7b97\uff0c\u8fd9\u6837\u53ef\u80fd\u4f1a\u5bfc\u81f4MySQL\u65e0\u6cd5\u4f7f\u7528\u7d22\u5f15\uff0c\u589e\u52a0\u9501\u5b9a\u7684\u6982\u7387\u3002<\/li>\n
  3. \u4f7f\u7528\u4e8b\u52a1\u63a7\u5236\uff1a\u5c06\u9700\u8981\u66f4\u65b0\u7684\u6570\u636e\u653e\u5728\u4e8b\u52a1\u4e2d\u63a7\u5236\uff0c\u5728\u4e8b\u52a1\u5185\u90e8\u6267\u884cUPDATE\u64cd\u4f5c\uff0c\u53ef\u4ee5\u4fdd\u8bc1\u5728\u6267\u884cUPDATE\u65f6\u4e0d\u4f1a\u88ab\u5176\u4ed6\u64cd\u4f5c\u5e72\u6270\uff0c\u51cf\u5c11\u53d1\u751f\u8868\u9501\u5b9a\u7684\u53ef\u80fd\u6027\u3002<\/li>\n<\/ol>\n
    \u603b\u7ed3\u6765\u8bf4\uff0cUPDATE\u64cd\u4f5c\u5728MySQL\u4e2d\u53ef\u80fd\u4f1a\u5f15\u8d77\u8868\u9501\u5b9a\uff0c\u4f46\u901a\u8fc7\u5408\u7406\u7684\u7d22\u5f15\u8bbe\u8ba1\u3001\u907f\u514d\u4e0d\u5fc5\u8981\u7684\u8ba1\u7b97\u4ee5\u53ca\u4f7f\u7528\u4e8b\u52a1\u63a7\u5236\u7b49\u65b9\u6cd5\uff0c\u53ef\u4ee5\u964d\u4f4e\u8868\u9501\u5b9a\u7684\u98ce\u9669\uff0c\u63d0\u9ad8\u6570\u636e\u5e93\u7684\u5e76\u53d1\u5904\u7406\u80fd\u529b\u3002\u5e0c\u671b\u672c\u6587\u5bf9\u4f60\u6709\u6240\u5e2e\u52a9\u3002<\/p>\n
    \u597d\u4e86\uff0c\u672c\u6587\u5230\u6b64\u7ed3\u675f\uff0c\u5e26\u5927\u5bb6\u4e86\u89e3\u4e86\u300aUPDATE\u64cd\u4f5c\u662f\u5426\u4f1a\u5bfc\u81f4MySQL\u8868\u88ab\u9501\u5b9a\uff1f\u300b\uff0c\u5e0c\u671b\u672c\u6587\u5bf9\u4f60\u6709\u6240\u5e2e\u52a9\uff01\u5173\u6ce8\u4e3b\u673a\u5b9d\u8d1d\u516c\u4f17\u53f7\uff0c\u7ed9\u5927\u5bb6\u5206\u4eab\u66f4\u591a\u6570\u636e\u5e93\u77e5\u8bc6\uff01<\/p>\n
    \n
    \n <\/dt>\n<\/dl>\n","protected":false},"excerpt":{"rendered":"
    UPDATE\u64cd\u4f5c\u662f\u5426\u4f1a\u5bfc\u81f4MyS...<\/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-200072","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/200072","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=200072"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/200072\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=200072"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=200072"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=200072"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}