{"id":176821,"date":"2024-11-08T12:31:24","date_gmt":"2024-11-08T04:31:24","guid":{"rendered":"https:\/\/server.hk\/cnblog\/176821\/"},"modified":"2024-11-08T12:31:25","modified_gmt":"2024-11-08T04:31:25","slug":"%e5%a6%82%e4%bd%95%e4%bf%ae%e5%be%a9mysql%e9%8c%af%e8%aa%a4-%e7%84%a1%e6%b3%95%e5%9c%a8from%e5%ad%90%e5%8f%a5%e4%b8%ad%e6%8c%87%e5%ae%9a%e7%9b%ae%e6%a8%99%e8%a1%a8table_name%e9%80%b2%e8%a1%8c","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/176821\/","title":{"rendered":"\u5982\u4f55\u4fee\u5fa9MySQL\u932f\u8aa4 – \u7121\u6cd5\u5728FROM\u5b50\u53e5\u4e2d\u6307\u5b9a\u76ee\u6a19\u8868’table_name’\u9032\u884c\u66f4\u65b0"},"content":{"rendered":"

\u5982\u4f55\u4fee\u5fa9MySQL\u932f\u8aa4 – \u7121\u6cd5\u5728FROM\u5b50\u53e5\u4e2d\u6307\u5b9a\u76ee\u6a19\u8868’table_name’\u9032\u884c\u66f4\u65b0<\/h1>\n

\u5728\u4f7f\u7528MySQL\u9032\u884c\u6578\u64da\u5eab\u64cd\u4f5c\u6642\uff0c\u958b\u767c\u8005\u53ef\u80fd\u6703\u9047\u5230\u5404\u7a2e\u932f\u8aa4\uff0c\u5176\u4e2d\u4e4b\u4e00\u5c31\u662f\u300c\u7121\u6cd5\u5728FROM\u5b50\u53e5\u4e2d\u6307\u5b9a\u76ee\u6a19\u8868’table_name’\u9032\u884c\u66f4\u65b0\u300d\u3002\u9019\u500b\u932f\u8aa4\u901a\u5e38\u767c\u751f\u5728\u57f7\u884cUPDATE\u8a9e\u53e5\u6642\uff0c\u7576\u4f60\u8a66\u5716\u5f9e\u540c\u4e00\u5f35\u8868\u4e2d\u9078\u53d6\u6578\u64da\u4f86\u66f4\u65b0\u8a72\u8868\u7684\u8a18\u9304\u6642\u3002\u672c\u6587\u5c07\u6df1\u5165\u63a2\u8a0e\u9019\u500b\u932f\u8aa4\u7684\u539f\u56e0\u53ca\u5176\u89e3\u6c7a\u65b9\u6848\u3002<\/p>\n

\u932f\u8aa4\u539f\u56e0\u5206\u6790<\/h2>\n

\u9019\u500b\u932f\u8aa4\u7684\u6839\u672c\u539f\u56e0\u5728\u65bcMySQL\u7684\u8a2d\u8a08\u9650\u5236\u3002\u7576\u4f60\u57f7\u884c\u4e00\u500bUPDATE\u8a9e\u53e5\u6642\uff0cMySQL\u4e0d\u5141\u8a31\u5728FROM\u5b50\u53e5\u4e2d\u5f15\u7528\u540c\u4e00\u5f35\u8868\u3002\u9019\u662f\u70ba\u4e86\u907f\u514d\u6578\u64da\u4e0d\u4e00\u81f4\u7684\u60c5\u6cc1\u767c\u751f\u3002\u4f8b\u5982\uff0c\u8003\u616e\u4ee5\u4e0b\u7684SQL\u8a9e\u53e5\uff1a<\/p>\n

UPDATE table_name \nSET column1 = value1 \nWHERE column2 IN (SELECT column2 FROM table_name WHERE condition);<\/code><\/pre>\n
\u5728\u9019\u500b\u4f8b\u5b50\u4e2d\uff0c\u56e0\u70baFROM\u5b50\u53e5\u4e2d\u5f15\u7528\u4e86\u540c\u4e00\u5f35\u8868\uff0c\u6240\u4ee5\u6703\u5c0e\u81f4\u932f\u8aa4\u3002MySQL\u7121\u6cd5\u78ba\u5b9a\u5728\u66f4\u65b0\u904e\u7a0b\u4e2d\u61c9\u8a72\u5982\u4f55\u8655\u7406\u9019\u4e9b\u6578\u64da\u3002<\/p>\n
\u89e3\u6c7a\u65b9\u6848<\/h2>\n
\u8981\u4fee\u5fa9\u9019\u500b\u932f\u8aa4\uff0c\u6709\u5e7e\u7a2e\u65b9\u6cd5\u53ef\u4ee5\u8003\u616e\uff1a<\/p>\n
1. \u4f7f\u7528JOIN\u8a9e\u53e5<\/h3>\n
\u4e00\u7a2e\u5e38\u898b\u7684\u89e3\u6c7a\u65b9\u6848\u662f\u4f7f\u7528JOIN\u8a9e\u53e5\u4f86\u9032\u884c\u66f4\u65b0\u3002\u9019\u6a23\u53ef\u4ee5\u907f\u514d\u5728FROM\u5b50\u53e5\u4e2d\u76f4\u63a5\u5f15\u7528\u76ee\u6a19\u8868\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u793a\u4f8b\uff1a<\/p>\n
UPDATE table_name AS t1\nJOIN (SELECT column2 FROM table_name WHERE condition) AS t2\nON t1.column2 = t2.column2\nSET t1.column1 = value1;<\/code><\/pre>\n
\u5728\u9019\u500b\u4f8b\u5b50\u4e2d\uff0c\u6211\u5011\u4f7f\u7528\u4e86\u4e00\u500b\u5b50\u67e5\u8a62\u4f86\u9078\u53d6\u9700\u8981\u66f4\u65b0\u7684\u884c\uff0c\u7136\u5f8c\u901a\u904eJOIN\u5c07\u5176\u8207\u76ee\u6a19\u8868\u9023\u63a5\uff0c\u5f9e\u800c\u5b89\u5168\u5730\u9032\u884c\u66f4\u65b0\u3002<\/p>\n
2. \u4f7f\u7528\u5b50\u67e5\u8a62\u7684\u81e8\u6642\u8868<\/h3>\n
\u53e6\u4e00\u7a2e\u65b9\u6cd5\u662f\u5c07\u5b50\u67e5\u8a62\u7684\u7d50\u679c\u5b58\u5132\u5728\u4e00\u500b\u81e8\u6642\u8868\u4e2d\uff0c\u7136\u5f8c\u518d\u9032\u884c\u66f4\u65b0\u3002\u9019\u6a23\u53ef\u4ee5\u907f\u514d\u76f4\u63a5\u5728UPDATE\u8a9e\u53e5\u4e2d\u5f15\u7528\u76ee\u6a19\u8868\u3002\u793a\u4f8b\u5982\u4e0b\uff1a<\/p>\n
CREATE TEMPORARY TABLE temp_table AS \nSELECT column2 FROM table_name WHERE condition;\n\nUPDATE table_name \nSET column1 = value1 \nWHERE column2 IN (SELECT column2 FROM temp_table);\n\nDROP TEMPORARY TABLE temp_table;<\/code><\/pre>\n
\u9019\u7a2e\u65b9\u6cd5\u96d6\u7136\u7a0d\u986f\u7e41\u7463\uff0c\u4f46\u80fd\u6709\u6548\u907f\u514d\u932f\u8aa4\u7684\u767c\u751f\u3002<\/p>\n
3. \u4f7f\u7528CTE\uff08\u516c\u7528\u8868\u8868\u9054\u5f0f\uff09<\/h3>\n
\u5982\u679c\u4f60\u7684MySQL\u7248\u672c\u652f\u6301CTE\uff08\u516c\u7528\u8868\u8868\u9054\u5f0f\uff09\uff0c\u4f60\u53ef\u4ee5\u4f7f\u7528WITH\u8a9e\u53e5\u4f86\u89e3\u6c7a\u9019\u500b\u554f\u984c\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u793a\u4f8b\uff1a<\/p>\n
WITH temp AS (\n    SELECT column2 FROM table_name WHERE condition\n)\nUPDATE table_name \nSET column1 = value1 \nWHERE column2 IN (SELECT column2 FROM temp);<\/code><\/pre>\n
\u9019\u7a2e\u65b9\u6cd5\u7684\u512a\u9ede\u5728\u65bc\u8a9e\u6cd5\u7c21\u6f54\uff0c\u4e14\u6613\u65bc\u7406\u89e3\u3002<\/p>\n
\u7e3d\u7d50<\/h2>\n
\u5728MySQL\u4e2d\u9047\u5230\u300c\u7121\u6cd5\u5728FROM\u5b50\u53e5\u4e2d\u6307\u5b9a\u76ee\u6a19\u8868’table_name’\u9032\u884c\u66f4\u65b0\u300d\u7684\u932f\u8aa4\u6642\uff0c\u958b\u767c\u8005\u53ef\u4ee5\u901a\u904e\u4f7f\u7528JOIN\u8a9e\u53e5\u3001\u81e8\u6642\u8868\u6216CTE\u4f86\u6709\u6548\u89e3\u6c7a\u554f\u984c\u3002\u9019\u4e9b\u65b9\u6cd5\u4e0d\u50c5\u80fd\u5920\u907f\u514d\u932f\u8aa4\uff0c\u9084\u80fd\u63d0\u9ad8\u67e5\u8a62\u7684\u53ef\u8b80\u6027\u548c\u7dad\u8b77\u6027\u3002<\/p>\n
\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u7a69\u5b9a\u4e14\u9ad8\u6548\u7684\u6578\u64da\u5eab\u89e3\u6c7a\u65b9\u6848\uff0c\u8003\u616e\u4f7f\u7528\u9999\u6e2fVPS<\/a>\u4f86\u6258\u7ba1\u60a8\u7684\u61c9\u7528\u7a0b\u5e8f\uff0c\u78ba\u4fdd\u60a8\u7684\u6578\u64da\u5eab\u904b\u884c\u6d41\u66a2\u7121\u963b\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
\u5b78\u7fd2\u5982\u4f55\u4fee\u5fa9MySQL\u932f\u8aa4\uff1a\u7121\u6cd5\u5728FROM\u5b50\u53e5\u4e2d\u6307\u5b9a\u76ee\u6a19\u8868’table_name’\u9032\u884c\u66f4\u65b0\uff0c\u89e3\u6c7a\u5e38\u898b\u7684\u6578\u64da\u5eab\u66f4\u65b0\u554f\u984c\u3002<\/p>\n","protected":false},"author":0,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[101],"tags":[],"class_list":["post-176821","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/176821","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"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=176821"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/176821\/revisions"}],"predecessor-version":[{"id":176822,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/176821\/revisions\/176822"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=176821"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=176821"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=176821"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}