{"id":183392,"date":"2024-11-10T04:26:18","date_gmt":"2024-11-09T20:26:18","guid":{"rendered":"https:\/\/server.hk\/cnblog\/183392\/"},"modified":"2024-11-10T04:26:19","modified_gmt":"2024-11-09T20:26:19","slug":"%e5%af%a6%e7%8f%be%e6%95%b8%e6%93%9a%e5%ba%ab%e4%b8%ad%e5%85%a9%e5%80%8b%e8%ae%8a%e9%87%8f%e5%80%bc%e7%9a%84%e4%ba%a4%e6%8f%9b%e6%96%b9%e6%b3%95-%e6%95%b8%e6%93%9a%e5%ba%ab%e5%85%a9%e5%80%8b%e8%ae%8a","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/183392\/","title":{"rendered":"\u5be6\u73fe\u6578\u64da\u5eab\u4e2d\u5169\u500b\u8b8a\u91cf\u503c\u7684\u4ea4\u63db\u65b9\u6cd5 (\u6578\u64da\u5eab\u5169\u500b\u8b8a\u91cf\u503c\u4ea4\u63db)"},"content":{"rendered":"

\u5be6\u73fe\u6578\u64da\u5eab\u4e2d\u5169\u500b\u8b8a\u91cf\u503c\u7684\u4ea4\u63db\u65b9\u6cd5<\/h1>\n

\u5728\u6578\u64da\u5eab\u7ba1\u7406\u4e2d\uff0c\u7d93\u5e38\u9700\u8981\u5c0d\u6578\u64da\u9032\u884c\u64cd\u4f5c\uff0c\u5176\u4e2d\u4e00\u500b\u5e38\u898b\u7684\u9700\u6c42\u662f\u4ea4\u63db\u5169\u500b\u8b8a\u91cf\u7684\u503c\u3002\u9019\u7a2e\u64cd\u4f5c\u5728\u6578\u64da\u6e05\u7406\u3001\u6578\u64da\u66f4\u65b0\u6216\u6578\u64da\u9077\u79fb\u904e\u7a0b\u4e2d\u5c24\u70ba\u91cd\u8981\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u5728\u4e0d\u540c\u6578\u64da\u5eab\u7cfb\u7d71\u4e2d\u5be6\u73fe\u5169\u500b\u8b8a\u91cf\u503c\u4ea4\u63db\u7684\u5e7e\u7a2e\u65b9\u6cd5\uff0c\u4e26\u63d0\u4f9b\u76f8\u61c9\u7684\u793a\u4f8b\u4ee3\u78bc\u3002<\/p>\n

\u57fa\u672c\u6982\u5ff5<\/h2>\n

\u5728\u6578\u64da\u5eab\u4e2d\uff0c\u8b8a\u91cf\u901a\u5e38\u6307\u7684\u662f\u8868\u4e2d\u7684\u5217\u3002\u4ea4\u63db\u5169\u500b\u8b8a\u91cf\u7684\u503c\u610f\u5473\u8457\u5c07\u4e00\u884c\u4e2d\u7684\u5169\u500b\u5217\u7684\u6578\u64da\u9032\u884c\u4e92\u63db\u3002\u9019\u53ef\u4ee5\u901a\u904e\u591a\u7a2e\u65b9\u5f0f\u5be6\u73fe\uff0c\u5177\u9ad4\u53d6\u6c7a\u65bc\u6240\u4f7f\u7528\u7684\u6578\u64da\u5eab\u7cfb\u7d71\uff08\u5982 MySQL\u3001PostgreSQL\u3001SQL Server \u7b49\uff09\u3002<\/p>\n

\u4f7f\u7528 SQL \u8a9e\u53e5\u4ea4\u63db\u8b8a\u91cf\u503c<\/h2>\n

\u6700\u5e38\u898b\u7684\u65b9\u6cd5\u662f\u4f7f\u7528 SQL \u7684 UPDATE \u8a9e\u53e5\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u4e0d\u540c\u6578\u64da\u5eab\u7cfb\u7d71\u7684\u793a\u4f8b\uff1a<\/p>\n

MySQL<\/h3>\n
UPDATE \u8868\u540d \nSET \u8b8a\u91cf1 = \u8b8a\u91cf2, \n    \u8b8a\u91cf2 = \u8b8a\u91cf1 \nWHERE \u689d\u4ef6;<\/code><\/pre>\n
\u5728 MySQL \u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528\u4e00\u500b\u7c21\u55ae\u7684 UPDATE \u8a9e\u53e5\u4f86\u4ea4\u63db\u5169\u500b\u8b8a\u91cf\u7684\u503c\u3002\u9700\u8981\u6ce8\u610f\u7684\u662f\uff0c\u9019\u7a2e\u65b9\u6cd5\u5728\u540c\u4e00\u884c\u4e2d\u9032\u884c\u4ea4\u63db\u6642\u6703\u51fa\u73fe\u554f\u984c\uff0c\u56e0\u70ba\u5728\u57f7\u884c\u6642\uff0c\u8b8a\u91cf\u7684\u503c\u6703\u88ab\u8986\u84cb\u3002\u70ba\u4e86\u89e3\u6c7a\u9019\u500b\u554f\u984c\uff0c\u53ef\u4ee5\u4f7f\u7528\u4e00\u500b\u81e8\u6642\u8b8a\u91cf\uff1a<\/p>\n
UPDATE \u8868\u540d \nSET \u8b8a\u91cf1 = @temp := \u8b8a\u91cf1, \n    \u8b8a\u91cf1 = \u8b8a\u91cf2, \n    \u8b8a\u91cf2 = @temp \nWHERE \u689d\u4ef6;<\/code><\/pre>\n
PostgreSQL<\/h3>\n
UPDATE \u8868\u540d \nSET \u8b8a\u91cf1 = \u8b8a\u91cf2, \n    \u8b8a\u91cf2 = \u8b8a\u91cf1 \nWHERE \u689d\u4ef6;<\/code><\/pre>\n
\u5728 PostgreSQL \u4e2d\uff0c\u8207 MySQL \u985e\u4f3c\uff0c\u4f46\u53ef\u4ee5\u4f7f\u7528 CASE \u8a9e\u53e5\u4f86\u907f\u514d\u8986\u84cb\u554f\u984c\uff1a<\/p>\n
UPDATE \u8868\u540d \nSET \u8b8a\u91cf1 = CASE \n                WHEN \u689d\u4ef6 THEN \u8b8a\u91cf2 \n                ELSE \u8b8a\u91cf1 \n             END,\n    \u8b8a\u91cf2 = CASE \n                WHEN \u689d\u4ef6 THEN \u8b8a\u91cf1 \n                ELSE \u8b8a\u91cf2 \n             END\nWHERE \u689d\u4ef6;<\/code><\/pre>\n
SQL Server<\/h3>\n
UPDATE \u8868\u540d \nSET \u8b8a\u91cf1 = \u8b8a\u91cf2, \n    \u8b8a\u91cf2 = \u8b8a\u91cf1 \nWHERE \u689d\u4ef6;<\/code><\/pre>\n
\u5728 SQL Server \u4e2d\uff0c\u8207\u5176\u4ed6\u6578\u64da\u5eab\u7cfb\u7d71\u7684\u8a9e\u6cd5\u76f8\u4f3c\uff0c\u4f46\u540c\u6a23\u9700\u8981\u6ce8\u610f\u907f\u514d\u76f4\u63a5\u8986\u84cb\uff1a<\/p>\n
DECLARE @temp \u8b8a\u91cf\u985e\u578b;\nSET @temp = \u8b8a\u91cf1;\n\nUPDATE \u8868\u540d \nSET \u8b8a\u91cf1 = \u8b8a\u91cf2, \n    \u8b8a\u91cf2 = @temp \nWHERE \u689d\u4ef6;<\/code><\/pre>\n
\u4f7f\u7528\u4e8b\u52d9\u4fdd\u8b49\u6578\u64da\u4e00\u81f4\u6027<\/h2>\n
\u5728\u9032\u884c\u6578\u64da\u4ea4\u63db\u6642\uff0c\u7279\u5225\u662f\u5728\u591a\u7528\u6236\u74b0\u5883\u4e2d\uff0c\u4f7f\u7528\u4e8b\u52d9\u53ef\u4ee5\u4fdd\u8b49\u6578\u64da\u7684\u4e00\u81f4\u6027\u3002\u4ee5\u4e0b\u662f\u4f7f\u7528\u4e8b\u52d9\u7684\u793a\u4f8b\uff1a<\/p>\n
BEGIN TRANSACTION;\n\nUPDATE \u8868\u540d \nSET \u8b8a\u91cf1 = @temp := \u8b8a\u91cf1, \n    \u8b8a\u91cf1 = \u8b8a\u91cf2, \n    \u8b8a\u91cf2 = @temp \nWHERE \u689d\u4ef6;\n\nCOMMIT;<\/code><\/pre>\n
\u9019\u6a23\u53ef\u4ee5\u78ba\u4fdd\u5728\u4ea4\u63db\u904e\u7a0b\u4e2d\uff0c\u5982\u679c\u51fa\u73fe\u4efb\u4f55\u932f\u8aa4\uff0c\u6578\u64da\u53ef\u4ee5\u6062\u5fa9\u5230\u539f\u59cb\u72c0\u614b\u3002<\/p>\n
\u7e3d\u7d50<\/h2>\n
\u4ea4\u63db\u6578\u64da\u5eab\u4e2d\u5169\u500b\u8b8a\u91cf\u7684\u503c\u662f\u4e00\u500b\u5e38\u898b\u7684\u64cd\u4f5c\uff0c\u7121\u8ad6\u662f\u5728\u6578\u64da\u6e05\u7406\u9084\u662f\u6578\u64da\u66f4\u65b0\u904e\u7a0b\u4e2d\u3002\u901a\u904e\u4f7f\u7528 SQL \u8a9e\u53e5\u548c\u4e8b\u52d9\uff0c\u53ef\u4ee5\u6709\u6548\u5730\u5be6\u73fe\u9019\u4e00\u64cd\u4f5c\uff0c\u4e26\u78ba\u4fdd\u6578\u64da\u7684\u4e00\u81f4\u6027\u548c\u5b8c\u6574\u6027\u3002\u5c0d\u65bc\u9700\u8981\u9ad8\u6548\u6578\u64da\u8655\u7406\u7684\u7528\u6236\uff0c\u9078\u64c7\u5408\u9069\u7684 VPS<\/a> \u6216 \u9999\u6e2f\u4f3a\u670d\u5668<\/a> \u89e3\u6c7a\u65b9\u6848\u5c07\u6709\u52a9\u65bc\u63d0\u5347\u6578\u64da\u5eab\u6027\u80fd\u548c\u7a69\u5b9a\u6027\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
\u5b78\u7fd2\u5982\u4f55\u5728\u6578\u64da\u5eab\u4e2d\u5be6\u73fe\u5169\u500b\u8b8a\u91cf\u503c\u7684\u4ea4\u63db\u65b9\u6cd5\uff0c\u7c21\u5316\u6578\u64da\u64cd\u4f5c\uff0c\u63d0\u9ad8\u6578\u64da\u7ba1\u7406\u6548\u7387\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-183392","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/183392","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=183392"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/183392\/revisions"}],"predecessor-version":[{"id":183393,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/183392\/revisions\/183393"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=183392"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=183392"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=183392"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}