{"id":7678,"date":"2024-11-14T08:06:12","date_gmt":"2024-11-14T00:06:12","guid":{"rendered":"https:\/\/fwq.ai\/blog\/7678\/"},"modified":"2024-11-14T08:06:12","modified_gmt":"2024-11-14T00:06:12","slug":"mysql-update%e8%af%ad%e5%8f%a5%e4%b8%ad%e4%bd%bf%e7%94%a8%e5%a4%9a%e4%b8%aa%e5%ad%97%e6%ae%b5%e4%bd%9c%e4%b8%ba%e7%ad%9b%e9%80%89%e6%9d%a1%e4%bb%b6%ef%bc%8c%e6%98%af%e9%94%81%e8%a1%a8%e8%bf%98","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/7678\/","title":{"rendered":"MySQL UPDATE\u8bed\u53e5\u4e2d\u4f7f\u7528\u591a\u4e2a\u5b57\u6bb5\u4f5c\u4e3a\u7b5b\u9009\u6761\u4ef6\uff0c\u662f\u9501\u8868\u8fd8\u662f\u9501\u884c\uff1f"},"content":{"rendered":"

\"MySQL<\/p>\n

where\u5b50\u53e5\u540c\u65f6\u4f7f\u7528\u591a\u4e2a\u5b57\u6bb5\u9501\u8868\u8fd8\u662f\u9501\u884c<\/strong><\/p>\n

\u5728MySQL\u4e2d\u4f7f\u7528UPDATE\u8bed\u53e5\u65f6\uff0cwhere\u5b50\u53e5\u4e2d\u4f7f\u7528\u4e86\u4e24\u4e2a\u5b57\u6bb5\uff08id\u548cis_delete\uff09\uff0c\u9501\u8868\u8fd8\u662f\u9501\u884c\u5f15\u53d1\u4e86\u7591\u95ee\u3002<\/p>\n

\u9501\u8868\u4e0e\u9501\u884c<\/strong><\/p>\n

\u9501\u8868\u4f1a\u9501\u5b9a\u6574\u4e2a\u8868\uff0c\u963b\u6b62\u5176\u4ed6\u4e8b\u52a1\u5bf9\u6b64\u8868\u7684\u4efb\u4f55\u64cd\u4f5c\u3002\u800c\u9501\u884c\u5219\u53ea\u9501\u5b9a\u88ab\u66f4\u65b0\u7684\u884c\uff0c\u5141\u8bb8\u5176\u4ed6\u4e8b\u52a1\u8bbf\u95ee\u8868\u4e2d\u7684\u5176\u4ed6\u884c\u3002<\/p>\n

MySQL\u7684\u9501\u673a\u5236<\/strong><\/p>\n

\u4e0d\u540c\u7684MySQL\u7248\u672c\u548c\u5f15\u64ce\u4f7f\u7528\u4e0d\u540c\u7684\u9501\u673a\u5236\u3002\u5728MySQL 5.7\u53ca\u66f4\u9ad8\u7248\u672c\u4e2d\uff0c\u9ed8\u8ba4\u60c5\u51b5\u4e0b\u4f7f\u7528\u591a\u7248\u672c\u5e76\u53d1\u63a7\u5236\uff08MVCC\uff09\uff0c\u8be5\u673a\u5236\u4f7f\u7528\u8bfb\u5199\u9501\u6765\u5b9e\u73b0\u5e76\u53d1\u548c\u9694\u79bb\u6027\u3002<\/p>\n

\u9488\u5bf9\u672c\u4f8b\u7684\u5206\u6790<\/strong><\/p>\n

\u5728\u7ed9\u5b9a\u7684UPDATE\u8bed\u53e5\u4e2d\uff0cwhere\u5b50\u53e5\u4e2d\u7684\u4e24\u4e2a\u5b57\u6bb5 (id\u548cis_delete) \u90fd\u7528\u4f5c\u7b5b\u9009\u6761\u4ef6\u3002\u8fd9\u610f\u5473\u7740\uff0cMySQL\u5c06\u6839\u636e\u8fd9\u4e24\u4e2a\u6761\u4ef6\u7b5b\u9009\u51fa\u7b26\u5408\u6761\u4ef6\u7684\u884c\uff0c\u5e76\u4e14\u53ea\u9501\u4f4f\u8fd9\u4e9b\u884c\uff08\u9501\u884c\uff09\u3002\u8fd9\u6837\u53ef\u4ee5\u907f\u514d\u9501\u5b9a\u6574\u4e2a\u8868\uff0c\u63d0\u9ad8\u5e76\u53d1\u6027\u3002<\/p>\n

\u56e0\u6b64\uff0c\u5728\u7ed9\u5b9a\u7684\u60c5\u51b5\u4e0b\uff0cUPDATE\u8bed\u53e5\u5c06\u53ea\u9501\u4f4f\u7b26\u5408id = 1\u4e14is_delete = 0\u6761\u4ef6\u7684\u884c\uff0c\u800c\u4e0d\u4f1a\u9501\u4f4f\u6574\u4e2a\u8868\u3002<\/p>\n

\u4ee5\u4e0a\u5c31\u662fMySQL UPDATE\u8bed\u53e5\u4e2d\u4f7f\u7528\u591a\u4e2a\u5b57\u6bb5\u4f5c\u4e3a\u7b5b\u9009\u6761\u4ef6\uff0c\u662f\u9501\u8868\u8fd8\u662f\u9501\u884c\uff1f\u7684\u8be6\u7ec6\u5185\u5bb9\uff0c\u66f4\u591a\u8bf7\u5173\u6ce8\u7c73\u4e91\u7f51\u5176\u5b83\u76f8\u5173\u6587\u7ae0\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"

where\u5b50\u53e5\u540c\u65f6\u4f7f\u7528\u591a\u4e2a\u5b57\u6bb5\u9501\u8868\u8fd8\u662f\u9501\u884c \u5728MySQL\u4e2d\u4f7f\u7528UPDATE\u8bed\u53e5\u65f6\uff0cwhere\u5b50\u53e5\u4e2d\u4f7f\u7528\u4e86\u4e24\u4e2a\u5b57\u6bb5\uff08id\u548cis_delete\uff09\uff0c\u9501\u8868\u8fd8\u662f\u9501\u884c\u5f15\u53d1\u4e86\u7591\u95ee\u3002 \u9501\u8868\u4e0e\u9501\u884c \u9501\u8868\u4f1a\u9501\u5b9a\u6574\u4e2a\u8868\uff0c\u963b\u6b62\u5176\u4ed6\u4e8b\u52a1\u5bf9\u6b64\u8868\u7684\u4efb\u4f55\u64cd\u4f5c\u3002\u800c\u9501\u884c\u5219\u53ea\u9501\u5b9a\u88ab\u66f4\u65b0\u7684\u884c\uff0c\u5141\u8bb8\u5176\u4ed6\u4e8b\u52a1\u8bbf\u95ee\u8868\u4e2d\u7684\u5176\u4ed6\u884c\u3002 MySQL\u7684\u9501\u673a\u5236 \u4e0d\u540c\u7684MySQL\u7248\u672c\u548c\u5f15\u64ce\u4f7f\u7528\u4e0d\u540c\u7684\u9501\u673a\u5236\u3002\u5728MySQL 5.7\u53ca\u66f4\u9ad8\u7248\u672c\u4e2d\uff0c\u9ed8\u8ba4\u60c5\u51b5\u4e0b\u4f7f\u7528\u591a\u7248\u672c\u5e76\u53d1\u63a7\u5236\uff08MVCC\uff09\uff0c\u8be5\u673a\u5236\u4f7f\u7528\u8bfb\u5199\u9501\u6765\u5b9e\u73b0\u5e76\u53d1\u548c\u9694\u79bb\u6027\u3002 \u9488\u5bf9\u672c\u4f8b\u7684\u5206\u6790 \u5728\u7ed9\u5b9a\u7684UPDATE\u8bed\u53e5\u4e2d\uff0cwhere\u5b50\u53e5\u4e2d\u7684\u4e24\u4e2a\u5b57\u6bb5 (id\u548cis_delete) \u90fd\u7528\u4f5c\u7b5b\u9009\u6761\u4ef6\u3002\u8fd9\u610f\u5473\u7740\uff0cMySQL\u5c06\u6839\u636e\u8fd9\u4e24\u4e2a\u6761\u4ef6\u7b5b\u9009\u51fa\u7b26\u5408\u6761\u4ef6\u7684\u884c\uff0c\u5e76\u4e14\u53ea\u9501\u4f4f\u8fd9\u4e9b\u884c\uff08\u9501\u884c\uff09\u3002\u8fd9\u6837\u53ef\u4ee5\u907f\u514d\u9501\u5b9a\u6574\u4e2a\u8868\uff0c\u63d0\u9ad8\u5e76\u53d1\u6027\u3002 \u56e0\u6b64\uff0c\u5728\u7ed9\u5b9a\u7684\u60c5\u51b5\u4e0b\uff0cUPDATE\u8bed\u53e5\u5c06\u53ea\u9501\u4f4f\u7b26\u5408id = 1\u4e14is_delete = 0\u6761\u4ef6\u7684\u884c\uff0c\u800c\u4e0d\u4f1a\u9501\u4f4f\u6574\u4e2a\u8868\u3002 \u4ee5\u4e0a\u5c31\u662fMySQL UPDATE\u8bed\u53e5\u4e2d\u4f7f\u7528\u591a\u4e2a\u5b57\u6bb5\u4f5c\u4e3a\u7b5b\u9009\u6761\u4ef6\uff0c\u662f\u9501\u8868\u8fd8\u662f\u9501\u884c\uff1f\u7684\u8be6\u7ec6\u5185\u5bb9\uff0c\u66f4\u591a\u8bf7\u5173\u6ce8\u7c73\u4e91\u7f51\u5176\u5b83\u76f8\u5173\u6587\u7ae0\uff01<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[16],"tags":[],"class_list":["post-7678","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/7678","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/comments?post=7678"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/7678\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=7678"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=7678"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=7678"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}