{"id":172285,"date":"2024-11-07T11:51:19","date_gmt":"2024-11-07T03:51:19","guid":{"rendered":"https:\/\/server.hk\/cnblog\/172285\/"},"modified":"2024-11-07T11:51:20","modified_gmt":"2024-11-07T03:51:20","slug":"%e8%ae%93sql%e6%95%b8%e6%93%9a%e5%ba%ab%e4%b8%ad%e5%a4%9a%e5%80%8b%e8%a1%a8%e5%90%8c%e6%99%82%e6%9b%b4%e6%96%b0%e6%95%b8%e6%93%9a%e7%9a%84%e6%96%b9%e6%b3%95","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/172285\/","title":{"rendered":"\u8b93SQL\u6578\u64da\u5eab\u4e2d\u591a\u500b\u8868\u540c\u6642\u66f4\u65b0\u6578\u64da\u7684\u65b9\u6cd5"},"content":{"rendered":"

\u8b93SQL\u6578\u64da\u5eab\u4e2d\u591a\u500b\u8868\u540c\u6642\u66f4\u65b0\u6578\u64da\u7684\u65b9\u6cd5<\/h1>\n

\u5728\u73fe\u4ee3\u7684\u6578\u64da\u5eab\u7ba1\u7406\u4e2d\uff0c\u7d93\u5e38\u9700\u8981\u5c0d\u591a\u500b\u8868\u9032\u884c\u540c\u6642\u66f4\u65b0\u3002\u9019\u4e0d\u50c5\u80fd\u63d0\u9ad8\u6578\u64da\u7684\u4e00\u81f4\u6027\uff0c\u9084\u80fd\u6e1b\u5c11\u6578\u64da\u5eab\u64cd\u4f5c\u7684\u8907\u96dc\u6027\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u5e7e\u7a2e\u5728SQL\u6578\u64da\u5eab\u4e2d\u540c\u6642\u66f4\u65b0\u591a\u500b\u8868\u7684\u65b9\u6cd5\uff0c\u4e26\u63d0\u4f9b\u76f8\u61c9\u7684\u793a\u4f8b\u548c\u4ee3\u78bc\u7247\u6bb5\u3002<\/p>\n

\u4f7f\u7528\u4e8b\u52d9\uff08Transaction\uff09<\/h2>\n

\u4e8b\u52d9\u662f\u4e00\u7d44\u64cd\u4f5c\u7684\u96c6\u5408\uff0c\u9019\u4e9b\u64cd\u4f5c\u8981\u9ebc\u5168\u90e8\u6210\u529f\uff0c\u8981\u9ebc\u5168\u90e8\u5931\u6557\u3002\u4f7f\u7528\u4e8b\u52d9\u53ef\u4ee5\u78ba\u4fdd\u6578\u64da\u7684\u4e00\u81f4\u6027\uff0c\u7279\u5225\u662f\u5728\u66f4\u65b0\u591a\u500b\u8868\u6642\u3002\u4ee5\u4e0b\u662f\u4f7f\u7528\u4e8b\u52d9\u7684\u57fa\u672c\u6b65\u9a5f\uff1a<\/p>\n

BEGIN TRANSACTION;\n\nUPDATE \u88681 SET \u52171 = \u503c1 WHERE \u689d\u4ef6;\nUPDATE \u88682 SET \u52172 = \u503c2 WHERE \u689d\u4ef6;\n\nCOMMIT;<\/code><\/pre>\n
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\u4f7f\u7528JOIN\u8a9e\u53e5\u9032\u884c\u66f4\u65b0<\/h2>\n
\u5728\u67d0\u4e9b\u60c5\u6cc1\u4e0b\uff0c\u53ef\u4ee5\u4f7f\u7528JOIN\u8a9e\u53e5\u4f86\u540c\u6642\u66f4\u65b0\u591a\u500b\u8868\u3002\u9019\u7a2e\u65b9\u6cd5\u901a\u5e38\u7528\u65bc\u9700\u8981\u6839\u64da\u4e00\u500b\u8868\u7684\u6578\u64da\u4f86\u66f4\u65b0\u53e6\u4e00\u500b\u8868\u7684\u60c5\u6cc1\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u793a\u4f8b\uff1a<\/p>\n
UPDATE \u88681\nSET \u88681.\u52171 = \u88682.\u52172\nFROM \u88681\nJOIN \u88682 ON \u88681.\u5916\u9375 = \u88682.\u4e3b\u9375\nWHERE \u689d\u4ef6;<\/code><\/pre>\n
\u5728\u9019\u500b\u4f8b\u5b50\u4e2d\uff0c\u88681\u7684\u52171\u5c07\u6839\u64da\u88682\u7684\u52172\u7684\u503c\u9032\u884c\u66f4\u65b0\uff0c\u689d\u4ef6\u662f\u5169\u500b\u8868\u4e4b\u9593\u7684\u5916\u9375\u548c\u4e3b\u9375\u5339\u914d\u3002<\/p>\n
\u4f7f\u7528\u5b58\u5132\u904e\u7a0b\uff08Stored Procedures\uff09<\/h2>\n
\u5b58\u5132\u904e\u7a0b\u662f\u4e00\u7d44\u9810\u5148\u7de8\u5beb\u7684SQL\u8a9e\u53e5\uff0c\u53ef\u4ee5\u5728\u6578\u64da\u5eab\u4e2d\u57f7\u884c\u3002\u4f7f\u7528\u5b58\u5132\u904e\u7a0b\u53ef\u4ee5\u5c07\u591a\u500b\u66f4\u65b0\u64cd\u4f5c\u5c01\u88dd\u5728\u4e00\u8d77\uff0c\u4e26\u4e14\u53ef\u4ee5\u91cd\u8907\u4f7f\u7528\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u7c21\u55ae\u7684\u5b58\u5132\u904e\u7a0b\u793a\u4f8b\uff1a<\/p>\n
CREATE PROCEDURE \u66f4\u65b0\u6578\u64da\nAS\nBEGIN\n    UPDATE \u88681 SET \u52171 = \u503c1 WHERE \u689d\u4ef6;\n    UPDATE \u88682 SET \u52172 = \u503c2 WHERE \u689d\u4ef6;\nEND;<\/code><\/pre>\n
\u8abf\u7528\u9019\u500b\u5b58\u5132\u904e\u7a0b\u6642\uff0c\u5c07\u540c\u6642\u57f7\u884c\u5c0d\u88681\u548c\u88682\u7684\u66f4\u65b0\u64cd\u4f5c\u3002<\/p>\n
\u4f7f\u7528\u89f8\u767c\u5668\uff08Triggers\uff09<\/h2>\n
\u89f8\u767c\u5668\u662f\u4e00\u7a2e\u7279\u6b8a\u7684\u5b58\u5132\u904e\u7a0b\uff0c\u7576\u7279\u5b9a\u4e8b\u4ef6\u767c\u751f\u6642\u81ea\u52d5\u57f7\u884c\u3002\u53ef\u4ee5\u4f7f\u7528\u89f8\u767c\u5668\u4f86\u5be6\u73fe\u7576\u4e00\u500b\u8868\u7684\u6578\u64da\u88ab\u66f4\u65b0\u6642\uff0c\u81ea\u52d5\u66f4\u65b0\u53e6\u4e00\u500b\u8868\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u89f8\u767c\u5668\u7684\u793a\u4f8b\uff1a<\/p>\n
CREATE TRIGGER \u66f4\u65b0\u89f8\u767c\u5668\nON \u88681\nAFTER UPDATE\nAS\nBEGIN\n    UPDATE \u88682 SET \u52172 = \u65b0\u503c WHERE \u689d\u4ef6;\nEND;<\/code><\/pre>\n
\u5728\u9019\u500b\u4f8b\u5b50\u4e2d\uff0c\u7576\u88681\u7684\u6578\u64da\u88ab\u66f4\u65b0\u5f8c\uff0c\u89f8\u767c\u5668\u5c07\u81ea\u52d5\u57f7\u884c\uff0c\u4e26\u66f4\u65b0\u88682\u7684\u76f8\u61c9\u6578\u64da\u3002<\/p>\n
\u7d50\u8ad6<\/h2>\n
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\u5982\u679c\u60a8\u5c0d\u65bc\u6578\u64da\u5eab\u7ba1\u7406\u6216\u5176\u4ed6\u6280\u8853\u554f\u984c\u6709\u9032\u4e00\u6b65\u7684\u9700\u6c42\uff0c\u6b61\u8fce\u8a2a\u554f\u6211\u5011\u7684\u7db2\u7ad9\u4e86\u89e3\u66f4\u591a\u8cc7\u8a0a\u3002\u6211\u5011\u63d0\u4f9b\u5404\u7a2e VPS<\/a> \u89e3\u6c7a\u65b9\u6848\uff0c\u5e6b\u52a9\u60a8\u66f4\u597d\u5730\u7ba1\u7406\u60a8\u7684\u6578\u64da\u548c\u61c9\u7528\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
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