{"id":65747,"date":"2024-10-14T14:03:43","date_gmt":"2024-10-14T06:03:43","guid":{"rendered":"https:\/\/server.hk\/cnblog\/65747\/"},"modified":"2024-10-14T14:03:43","modified_gmt":"2024-10-14T06:03:43","slug":"mssql%e6%89%b9%e9%87%8f%e6%9b%b4%e6%96%b0%e5%ad%97%e6%ae%b5%e5%80%bc%e7%9a%84%e6%99%ba%e8%83%bd%e6%8a%80%e5%b7%a7%ef%bc%88mssql%e6%89%b9%e9%87%8f%e6%9b%bf%e6%8f%9b%e5%ad%97%e6%ae%b5%e5%80%bc%ef%bc%89","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/65747\/","title":{"rendered":"MSSQL\u6279\u91cf\u66f4\u65b0\u5b57\u6bb5\u503c\u7684\u667a\u80fd\u6280\u5de7\uff08mssql\u6279\u91cf\u66ff\u63db\u5b57\u6bb5\u503c\uff09"},"content":{"rendered":"

MSSQL\u6279\u91cf\u66f4\u65b0\u5b57\u6bb5\u503c\u7684\u667a\u80fd\u6280\u5de7\uff08mssql\u6279\u91cf\u66ff\u63db\u5b57\u6bb5\u503c\uff09<\/h1>\n

\u5728\u6578\u64da\u5eab\u7ba1\u7406\u4e2d\uff0c\u6279\u91cf\u66f4\u65b0\u5b57\u6bb5\u503c\u662f\u4e00\u9805\u5e38\u898b\u7684\u4efb\u52d9\uff0c\u5c24\u5176\u662f\u5728\u8655\u7406\u5927\u91cf\u6578\u64da\u6642\u3002Microsoft SQL Server\uff08MSSQL\uff09\u63d0\u4f9b\u4e86\u591a\u7a2e\u65b9\u6cd5\u4f86\u9ad8\u6548\u5730\u57f7\u884c\u9019\u4e9b\u64cd\u4f5c\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u4e00\u4e9b\u667a\u80fd\u6280\u5de7\uff0c\u5e6b\u52a9\u60a8\u5728MSSQL\u4e2d\u9032\u884c\u6279\u91cf\u66f4\u65b0\u5b57\u6bb5\u503c\u3002<\/p>\n

1. \u4f7f\u7528UPDATE\u8a9e\u53e5<\/h2>\n

\u6700\u57fa\u672c\u7684\u6279\u91cf\u66f4\u65b0\u65b9\u6cd5\u662f\u4f7f\u7528UPDATE\u8a9e\u53e5\u3002\u9019\u7a2e\u65b9\u6cd5\u9069\u5408\u65bc\u9700\u8981\u66f4\u65b0\u7279\u5b9a\u689d\u4ef6\u4e0b\u7684\u591a\u689d\u8a18\u9304\u3002<\/p>\n

UPDATE \u8868\u540d\nSET \u5b57\u6bb5\u540d = \u65b0\u503c\nWHERE \u689d\u4ef6;<\/code><\/pre>\n
\u4f8b\u5982\uff0c\u5047\u8a2d\u6211\u5011\u6709\u4e00\u500b\u540d\u70ba\u201c\u54e1\u5de5\u201d\u7684\u8868\uff0c\u4e26\u5e0c\u671b\u5c07\u6240\u6709\u90e8\u9580\u70ba\u201c\u92b7\u552e\u201d\u7684\u54e1\u5de5\u7684\u85aa\u6c34\u63d0\u9ad810%\u3002\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u8a9e\u53e5\uff1a<\/p>\n
UPDATE \u54e1\u5de5\nSET \u85aa\u6c34 = \u85aa\u6c34 * 1.1\nWHERE \u90e8\u9580 = '\u92b7\u552e';<\/code><\/pre>\n
2. \u4f7f\u7528CASE\u8a9e\u53e5\u9032\u884c\u689d\u4ef6\u66f4\u65b0<\/h2>\n
\u7576\u9700\u8981\u6839\u64da\u4e0d\u540c\u689d\u4ef6\u66f4\u65b0\u4e0d\u540c\u7684\u503c\u6642\uff0c\u53ef\u4ee5\u4f7f\u7528CASE\u8a9e\u53e5\u3002\u9019\u6a23\u53ef\u4ee5\u5728\u4e00\u500bUPDATE\u8a9e\u53e5\u4e2d\u8655\u7406\u591a\u500b\u689d\u4ef6\u3002<\/p>\n
UPDATE \u8868\u540d\nSET \u5b57\u6bb5\u540d = CASE\n    WHEN \u689d\u4ef61 THEN \u503c1\n    WHEN \u689d\u4ef62 THEN \u503c2\n    ELSE \u9810\u8a2d\u503c\nEND\nWHERE \u689d\u4ef6;<\/code><\/pre>\n
\u4f8b\u5982\uff0c\u5047\u8a2d\u6211\u5011\u5e0c\u671b\u6839\u64da\u54e1\u5de5\u7684\u8868\u73fe\u8a55\u7d1a\u4f86\u8abf\u6574\u85aa\u6c34\uff1a<\/p>\n
UPDATE \u54e1\u5de5\nSET \u85aa\u6c34 = CASE\n    WHEN \u8a55\u7d1a = '\u512a\u79c0' THEN \u85aa\u6c34 * 1.2\n    WHEN \u8a55\u7d1a = '\u826f\u597d' THEN \u85aa\u6c34 * 1.1\n    ELSE \u85aa\u6c34\nEND\nWHERE \u8a55\u7d1a IN ('\u512a\u79c0', '\u826f\u597d', '\u4e00\u822c');<\/code><\/pre>\n
3. \u4f7f\u7528JOIN\u9032\u884c\u66f4\u65b0<\/h2>\n
\u5728\u67d0\u4e9b\u60c5\u6cc1\u4e0b\uff0c\u60a8\u53ef\u80fd\u9700\u8981\u6839\u64da\u53e6\u4e00\u500b\u8868\u7684\u6578\u64da\u4f86\u66f4\u65b0\u5b57\u6bb5\u503c\u3002\u9019\u6642\u53ef\u4ee5\u4f7f\u7528JOIN\u8a9e\u53e5\u3002<\/p>\n
UPDATE t1\nSET t1.\u5b57\u6bb5\u540d = t2.\u65b0\u503c\nFROM \u88681 t1\nJOIN \u88682 t2 ON t1.\u95dc\u806f\u5b57\u6bb5 = t2.\u95dc\u806f\u5b57\u6bb5\nWHERE \u689d\u4ef6;<\/code><\/pre>\n
\u4f8b\u5982\uff0c\u5047\u8a2d\u6211\u5011\u6709\u4e00\u500b\u201c\u54e1\u5de5\u201d\u8868\u548c\u4e00\u500b\u201c\u90e8\u9580\u201d\u8868\uff0c\u4e26\u5e0c\u671b\u6839\u64da\u90e8\u9580\u7684\u9810\u7b97\u4f86\u66f4\u65b0\u54e1\u5de5\u7684\u85aa\u6c34\uff1a<\/p>\n
UPDATE e\nSET e.\u85aa\u6c34 = d.\u9810\u7b97 * 0.1\nFROM \u54e1\u5de5 e\nJOIN \u90e8\u9580 d ON e.\u90e8\u9580ID = d.ID\nWHERE d.\u9810\u7b97 > 100000;<\/code><\/pre>\n
4. \u4f7f\u7528\u81e8\u6642\u8868\u9032\u884c\u6279\u91cf\u66f4\u65b0<\/h2>\n
\u7576\u9700\u8981\u9032\u884c\u8907\u96dc\u7684\u6279\u91cf\u66f4\u65b0\u6642\uff0c\u53ef\u4ee5\u8003\u616e\u4f7f\u7528\u81e8\u6642\u8868\u3002\u9019\u7a2e\u65b9\u6cd5\u53ef\u4ee5\u5e6b\u52a9\u60a8\u5728\u66f4\u65b0\u4e4b\u524d\u9032\u884c\u6578\u64da\u8655\u7406\u3002<\/p>\n
-- \u5275\u5efa\u81e8\u6642\u8868\nCREATE TABLE #TempTable (ID INT, \u65b0\u503c VARCHAR(100));\n\n-- \u63d2\u5165\u6578\u64da\nINSERT INTO #TempTable (ID, \u65b0\u503c)\nVALUES (1, '\u65b0\u503c1'), (2, '\u65b0\u503c2');\n\n-- \u6279\u91cf\u66f4\u65b0\nUPDATE e\nSET e.\u5b57\u6bb5\u540d = t.\u65b0\u503c\nFROM \u54e1\u5de5 e\nJOIN #TempTable t ON e.ID = t.ID;\n\n-- \u522a\u9664\u81e8\u6642\u8868\nDROP TABLE #TempTable;<\/code><\/pre>\n
5. \u4f7f\u7528\u4e8b\u52d9\u78ba\u4fdd\u6578\u64da\u4e00\u81f4\u6027<\/h2>\n
\u5728\u9032\u884c\u6279\u91cf\u66f4\u65b0\u6642\uff0c\u4f7f\u7528\u4e8b\u52d9\u53ef\u4ee5\u78ba\u4fdd\u6578\u64da\u7684\u4e00\u81f4\u6027\u548c\u5b8c\u6574\u6027\u3002\u5982\u679c\u5728\u66f4\u65b0\u904e\u7a0b\u4e2d\u51fa\u73fe\u932f\u8aa4\uff0c\u53ef\u4ee5\u56de\u6efe\u5230\u66f4\u65b0\u4e4b\u524d\u7684\u72c0\u614b\u3002<\/p>\n
BEGIN TRANSACTION;\n\nUPDATE \u54e1\u5de5\nSET \u85aa\u6c34 = \u85aa\u6c34 * 1.1\nWHERE \u90e8\u9580 = '\u92b7\u552e';\n\n-- \u6aa2\u67e5\u662f\u5426\u6709\u932f\u8aa4\nIF @@ERROR  0\nBEGIN\n    ROLLBACK TRANSACTION;\n    PRINT '\u66f4\u65b0\u5931\u6557';\nEND\nELSE\nBEGIN\n    COMMIT TRANSACTION;\n    PRINT '\u66f4\u65b0\u6210\u529f';\nEND;<\/code><\/pre>\n
\u7e3d\u7d50<\/h2>\n
\u5728MSSQL\u4e2d\u9032\u884c\u6279\u91cf\u66f4\u65b0\u5b57\u6bb5\u503c\u7684\u64cd\u4f5c\u53ef\u4ee5\u901a\u904e\u591a\u7a2e\u65b9\u6cd5\u5be6\u73fe\uff0c\u5305\u62ec\u4f7f\u7528UPDATE\u8a9e\u53e5\u3001CASE\u8a9e\u53e5\u3001JOIN\u3001\u81e8\u6642\u8868\u4ee5\u53ca\u4e8b\u52d9\u7b49\u3002\u9019\u4e9b\u6280\u5de7\u4e0d\u50c5\u80fd\u63d0\u9ad8\u6548\u7387\uff0c\u9084\u80fd\u78ba\u4fdd\u6578\u64da\u7684\u6e96\u78ba\u6027\u548c\u4e00\u81f4\u6027\u3002\u5c0d\u65bc\u9700\u8981\u9ad8\u6548\u6578\u64da\u8655\u7406\u7684\u4f01\u696d\u4f86\u8aaa\uff0c\u9078\u64c7\u5408\u9069\u7684\u6578\u64da\u5eab\u89e3\u6c7a\u65b9\u6848\u81f3\u95dc\u91cd\u8981\u3002\u82e5\u60a8\u5c0d\u65bc\u9999\u6e2fVPS<\/a><\/em>\u6216\u9999\u6e2f\u4f3a\u670d\u5668<\/a><\/em>\u6709\u8208\u8da3\uff0c\u8acb\u8a2a\u554f\u6211\u5011\u7684\u7db2\u7ad9\u4ee5\u7372\u53d6\u66f4\u591a\u4fe1\u606f\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
\u638c\u63e1MSSQL\u6279\u91cf\u66f4\u65b0\u5b57\u6bb5\u503c\u7684\u667a\u80fd\u6280\u5de7\uff0c\u8f7b\u677e\u5b9e\u73b0\u6279\u91cf\u66ff\u6362\uff0c\u63d0\u9ad8\u6570\u636e\u5e93\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-65747","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/65747","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=65747"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/65747\/revisions"}],"predecessor-version":[{"id":65748,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/65747\/revisions\/65748"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=65747"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=65747"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=65747"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}