{"id":66353,"date":"2024-10-14T16:45:14","date_gmt":"2024-10-14T08:45:14","guid":{"rendered":"https:\/\/server.hk\/cnblog\/66353\/"},"modified":"2024-10-14T16:45:15","modified_gmt":"2024-10-14T08:45:15","slug":"mssql%e4%b8%ad%e5%8f%96%e5%80%bc%e5%a4%a7%e6%96%bc%e6%8c%87%e5%ae%9a%e5%80%bc%e7%9a%84%e6%8a%80%e5%b7%a7%ef%bc%88mssql%e5%8f%96%e5%80%bc%e5%a4%a7%e6%96%bc%e5%a4%9a%e5%b0%91%ef%bc%89","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/66353\/","title":{"rendered":"MSSQL\u4e2d\u53d6\u503c\u5927\u65bc\u6307\u5b9a\u503c\u7684\u6280\u5de7\uff08mssql\u53d6\u503c\u5927\u65bc\u591a\u5c11\uff09"},"content":{"rendered":"

MSSQL\u4e2d\u53d6\u503c\u5927\u65bc\u6307\u5b9a\u503c\u7684\u6280\u5de7<\/h1>\n

\u5728\u8cc7\u6599\u5eab\u7ba1\u7406\u4e2d\uff0cMicrosoft SQL Server\uff08MSSQL\uff09\u662f\u4e00\u500b\u5ee3\u6cdb\u4f7f\u7528\u7684\u95dc\u806f\u5f0f\u8cc7\u6599\u5eab\u7ba1\u7406\u7cfb\u7d71\u3002\u7576\u6211\u5011\u9700\u8981\u5f9e\u8cc7\u6599\u8868\u4e2d\u63d0\u53d6\u7279\u5b9a\u689d\u4ef6\u7684\u6578\u64da\u6642\uff0c\u4f7f\u7528\u9069\u7576\u7684\u67e5\u8a62\u8a9e\u53e5\u662f\u81f3\u95dc\u91cd\u8981\u7684\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u5982\u4f55\u5728MSSQL\u4e2d\u53d6\u503c\u5927\u65bc\u6307\u5b9a\u503c\u7684\u6280\u5de7\uff0c\u4e26\u63d0\u4f9b\u4e00\u4e9b\u5be6\u7528\u7684\u7bc4\u4f8b\u548c\u4ee3\u78bc\u7247\u6bb5\u3002<\/p>\n

\u57fa\u672c\u67e5\u8a62\u8a9e\u6cd5<\/h2>\n

\u5728MSSQL\u4e2d\uff0c\u4f7f\u7528 SELECT<\/code> \u8a9e\u53e5\u4f86\u67e5\u8a62\u8cc7\u6599\u3002\u82e5\u8981\u53d6\u51fa\u5927\u65bc\u67d0\u500b\u6307\u5b9a\u503c\u7684\u6578\u64da\uff0c\u53ef\u4ee5\u4f7f\u7528 WHERE<\/code> \u5b50\u53e5\u4f86\u8a2d\u7f6e\u689d\u4ef6\u3002\u57fa\u672c\u7684\u67e5\u8a62\u8a9e\u6cd5\u5982\u4e0b\uff1a<\/p>\n

SELECT column1, column2\nFROM table_name\nWHERE column_name > specified_value;<\/code><\/pre>\n
\u5728\u9019\u88e1\uff0ccolumn_name<\/code> \u662f\u4f60\u8981\u6bd4\u8f03\u7684\u6b04\u4f4d\uff0c\u800c specified_value<\/code> \u5247\u662f\u4f60\u6240\u6307\u5b9a\u7684\u503c\u3002<\/p>\n
\u7bc4\u4f8b\uff1a\u67e5\u8a62\u5927\u65bc\u6307\u5b9a\u503c\u7684\u6578\u64da<\/h2>\n
\u5047\u8a2d\u6211\u5011\u6709\u4e00\u500b\u540d\u70ba Products<\/code> \u7684\u8cc7\u6599\u8868\uff0c\u88e1\u9762\u6709\u4e00\u500b Price<\/code> \u6b04\u4f4d\u3002\u6211\u5011\u60f3\u8981\u67e5\u8a62\u6240\u6709\u50f9\u683c\u5927\u65bc100\u7684\u7522\u54c1\u3002\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u67e5\u8a62\uff1a<\/p>\n
SELECT ProductName, Price\nFROM Products\nWHERE Price > 100;<\/code><\/pre>\n
\u9019\u689d\u67e5\u8a62\u5c07\u8fd4\u56de\u6240\u6709\u50f9\u683c\u9ad8\u65bc100\u7684\u7522\u54c1\u540d\u7a31\u53ca\u5176\u50f9\u683c\u3002<\/p>\n
\u4f7f\u7528\u8b8a\u6578\u9032\u884c\u67e5\u8a62<\/h2>\n
\u5728\u67d0\u4e9b\u60c5\u6cc1\u4e0b\uff0c\u6211\u5011\u53ef\u80fd\u5e0c\u671b\u4f7f\u7528\u8b8a\u6578\u4f86\u52d5\u614b\u8a2d\u7f6e\u67e5\u8a62\u7684\u689d\u4ef6\u3002\u9019\u53ef\u4ee5\u901a\u904e\u4ee5\u4e0b\u65b9\u5f0f\u5be6\u73fe\uff1a<\/p>\n
DECLARE @MinPrice DECIMAL(10, 2);\nSET @MinPrice = 100;\n\nSELECT ProductName, Price\nFROM Products\nWHERE Price > @MinPrice;<\/code><\/pre>\n
\u5728\u9019\u500b\u7bc4\u4f8b\u4e2d\uff0c\u6211\u5011\u9996\u5148\u5ba3\u544a\u4e86\u4e00\u500b\u8b8a\u6578 @MinPrice<\/code>\uff0c\u7136\u5f8c\u5c07\u5176\u8a2d\u7f6e\u70ba100\u3002\u63a5\u8457\uff0c\u6211\u5011\u5728\u67e5\u8a62\u4e2d\u4f7f\u7528\u9019\u500b\u8b8a\u6578\u4f5c\u70ba\u689d\u4ef6\u3002<\/p>\n
\u591a\u689d\u4ef6\u67e5\u8a62<\/h2>\n
\u6709\u6642\u5019\uff0c\u6211\u5011\u9700\u8981\u6839\u64da\u591a\u500b\u689d\u4ef6\u4f86\u904e\u6ffe\u6578\u64da\u3002\u9019\u53ef\u4ee5\u901a\u904e\u4f7f\u7528 AND<\/code> \u6216 OR<\/code> \u4f86\u5be6\u73fe\u3002\u4f8b\u5982\uff0c\u5982\u679c\u6211\u5011\u60f3\u67e5\u8a62\u50f9\u683c\u5927\u65bc100\u4e14\u5eab\u5b58\u91cf\u5927\u65bc50\u7684\u7522\u54c1\uff0c\u53ef\u4ee5\u9019\u6a23\u5beb\uff1a<\/p>\n
SELECT ProductName, Price, Stock\nFROM Products\nWHERE Price > 100 AND Stock > 50;<\/code><\/pre>\n
\u9019\u689d\u67e5\u8a62\u5c07\u8fd4\u56de\u6240\u6709\u7b26\u5408\u5169\u500b\u689d\u4ef6\u7684\u7522\u54c1\u3002<\/p>\n
\u6392\u5e8f\u67e5\u8a62\u7d50\u679c<\/h2>\n
\u5728\u67e5\u8a62\u7d50\u679c\u4e2d\uff0c\u53ef\u80fd\u9700\u8981\u6839\u64da\u67d0\u500b\u6b04\u4f4d\u9032\u884c\u6392\u5e8f\u3002\u53ef\u4ee5\u4f7f\u7528 ORDER BY<\/code> \u5b50\u53e5\u4f86\u5be6\u73fe\u3002\u4f8b\u5982\uff0c\u82e5\u8981\u6309\u50f9\u683c\u5f9e\u9ad8\u5230\u4f4e\u6392\u5e8f\uff0c\u53ef\u4ee5\u9019\u6a23\u5beb\uff1a<\/p>\n
SELECT ProductName, Price\nFROM Products\nWHERE Price > 100\nORDER BY Price DESC;<\/code><\/pre>\n
\u9019\u6a23\u67e5\u8a62\u7684\u7d50\u679c\u5c07\u6703\u6309\u7167\u50f9\u683c\u5f9e\u9ad8\u5230\u4f4e\u6392\u5217\u3002<\/p>\n
\u7e3d\u7d50<\/h2>\n
\u5728MSSQL\u4e2d\uff0c\u4f7f\u7528 WHERE<\/code> \u5b50\u53e5\u53ef\u4ee5\u8f15\u9b06\u5730\u67e5\u8a62\u5927\u65bc\u6307\u5b9a\u503c\u7684\u6578\u64da\u3002\u900f\u904e\u8b8a\u6578\u3001\u591a\u689d\u4ef6\u67e5\u8a62\u53ca\u6392\u5e8f\u529f\u80fd\uff0c\u6211\u5011\u53ef\u4ee5\u66f4\u9748\u6d3b\u5730\u64cd\u4f5c\u8cc7\u6599\u5eab\uff0c\u7372\u53d6\u6240\u9700\u7684\u6578\u64da\u3002\u9019\u4e9b\u6280\u5de7\u5c0d\u65bc\u8cc7\u6599\u5206\u6790\u548c\u5831\u544a\u751f\u6210\u975e\u5e38\u6709\u5e6b\u52a9\u3002<\/p>\n
\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u9ad8\u6548\u7684 \u9999\u6e2fVPS<\/a> \u89e3\u6c7a\u65b9\u6848\uff0cServer.HK \u63d0\u4f9b\u591a\u7a2e\u9078\u64c7\uff0c\u6eff\u8db3\u60a8\u7684\u9700\u6c42\u3002\u7121\u8ad6\u662f\u8cc7\u6599\u5eab\u7ba1\u7406\u9084\u662f\u7db2\u7ad9\u6258\u7ba1\uff0c\u6211\u5011\u7684 \u4f3a\u670d\u5668<\/a> \u90fd\u80fd\u70ba\u60a8\u63d0\u4f9b\u7a69\u5b9a\u7684\u652f\u6301\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
\u63a2\u7d22MSSQL\u4e2d\u63d0\u53d6\u5927\u65bc\u6307\u5b9a\u503c\u7684\u6570\u636e\u6280\u5de7\uff0c\u638c\u63e1\u9ad8\u6548\u67e5\u8be2\u65b9\u6cd5\uff0c\u63d0\u5347\u6570\u636e\u5e93\u64cd\u4f5c\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-66353","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/66353","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=66353"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/66353\/revisions"}],"predecessor-version":[{"id":66354,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/66353\/revisions\/66354"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=66353"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=66353"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=66353"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}