{"id":139077,"date":"2024-10-31T18:03:08","date_gmt":"2024-10-31T10:03:08","guid":{"rendered":"https:\/\/server.hk\/cnblog\/139077\/"},"modified":"2024-10-31T18:03:09","modified_gmt":"2024-10-31T10:03:09","slug":"sql-server%e8%a6%96%e5%9c%96%e7%ae%a1%e7%90%86%e4%b8%ad%e7%9a%84%e5%9b%9b%e5%80%8b%e9%99%90%e5%88%b6%e6%a2%9d%e4%bb%b6","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/139077\/","title":{"rendered":"SQL Server\u8996\u5716\u7ba1\u7406\u4e2d\u7684\u56db\u500b\u9650\u5236\u689d\u4ef6"},"content":{"rendered":"

SQL Server\u8996\u5716\u7ba1\u7406\u4e2d\u7684\u56db\u500b\u9650\u5236\u689d\u4ef6<\/h1>\n

\u5728SQL Server\u4e2d\uff0c\u8996\u5716\u662f\u4e00\u7a2e\u865b\u64ec\u8868\u683c\uff0c\u80fd\u5920\u5f9e\u4e00\u500b\u6216\u591a\u500b\u57fa\u790e\u8868\u4e2d\u9078\u53d6\u6578\u64da\u3002\u8996\u5716\u7684\u4f7f\u7528\u53ef\u4ee5\u7c21\u5316\u67e5\u8a62\u3001\u63d0\u9ad8\u5b89\u5168\u6027\u4ee5\u53ca\u63d0\u4f9b\u6578\u64da\u7684\u62bd\u8c61\u5c64\u3002\u7136\u800c\uff0c\u5728\u4f7f\u7528\u8996\u5716\u6642\uff0c\u958b\u767c\u8005\u9700\u8981\u6ce8\u610f\u4e00\u4e9b\u9650\u5236\u689d\u4ef6\uff0c\u4ee5\u78ba\u4fdd\u8996\u5716\u7684\u6709\u6548\u6027\u548c\u6027\u80fd\u3002\u672c\u6587\u5c07\u63a2\u8a0eSQL Server\u8996\u5716\u7ba1\u7406\u4e2d\u7684\u56db\u500b\u4e3b\u8981\u9650\u5236\u689d\u4ef6\u3002<\/p>\n

1. \u4e0d\u652f\u6301\u67d0\u4e9bDML\u64cd\u4f5c<\/h2>\n

\u8996\u5716\u7684\u4e3b\u8981\u7279\u9ede\u4e4b\u4e00\u662f\u5b83\u5011\u53ef\u4ee5\u7528\u4f86\u7c21\u5316\u6578\u64da\u7684\u67e5\u8a62\uff0c\u4f46\u4e26\u975e\u6240\u6709\u8996\u5716\u90fd\u652f\u6301\u6578\u64da\u64cd\u4f5c\u8a9e\u8a00\uff08DML\uff09\u64cd\u4f5c\u3002\u5177\u9ad4\u4f86\u8aaa\uff0c\u5c0d\u65bc\u67d0\u4e9b\u985e\u578b\u7684\u8996\u5716\uff0c\u5982\u806f\u5408\u8996\u5716\uff08Union Views\uff09\u6216\u5305\u542b\u805a\u5408\u51fd\u6578\u7684\u8996\u5716\uff0cSQL Server\u4e0d\u5141\u8a31\u76f4\u63a5\u9032\u884c\u63d2\u5165\u3001\u66f4\u65b0\u6216\u522a\u9664\u64cd\u4f5c\u3002\u9019\u662f\u56e0\u70ba\u9019\u4e9b\u64cd\u4f5c\u53ef\u80fd\u6703\u5c0e\u81f4\u6578\u64da\u4e0d\u4e00\u81f4\u6216\u7121\u6cd5\u78ba\u5b9a\u5982\u4f55\u5c07\u8b8a\u66f4\u6620\u5c04\u56de\u57fa\u790e\u8868\u3002<\/p>\n

-- \u4f8b\u5b50\uff1a\u5617\u8a66\u5728\u4e00\u500b\u805a\u5408\u8996\u5716\u4e0a\u9032\u884c\u63d2\u5165\u64cd\u4f5c\nINSERT INTO \u805a\u5408\u8996\u5716 (column1, column2) VALUES (value1, value2); -- \u9019\u5c07\u6703\u5931\u6557\n<\/code><\/pre>\n
2. \u4e0d\u80fd\u5305\u542b\u67d0\u4e9bSQL\u8a9e\u53e5<\/h2>\n
\u5728\u5275\u5efa\u8996\u5716\u6642\uff0cSQL Server\u5c0d\u53ef\u5305\u542b\u7684SQL\u8a9e\u53e5\u6709\u4e00\u5b9a\u7684\u9650\u5236\u3002\u4f8b\u5982\uff0c\u8996\u5716\u4e0d\u80fd\u5305\u542bORDER BY\u5b50\u53e5\uff0c\u9664\u975e\u5b83\u8207TOP\u5b50\u53e5\u4e00\u8d77\u4f7f\u7528\u3002\u6b64\u5916\uff0c\u8996\u5716\u4e2d\u4e5f\u4e0d\u5141\u8a31\u4f7f\u7528DISTINCT\u95dc\u9375\u5b57\uff0c\u9019\u53ef\u80fd\u6703\u5c0e\u81f4\u6027\u80fd\u554f\u984c\u6216\u4e0d\u5fc5\u8981\u7684\u8907\u96dc\u6027\u3002<\/p>\n
-- \u4f8b\u5b50\uff1a\u5275\u5efa\u8996\u5716\u6642\u4f7f\u7528ORDER BY\u5c07\u6703\u5831\u932f\nCREATE VIEW MyView AS\nSELECT column1, column2\nFROM MyTable\nORDER BY column1; -- \u9019\u5c07\u6703\u5931\u6557\n<\/code><\/pre>\n
3. \u4f9d\u8cf4\u65bc\u57fa\u790e\u8868\u7684\u7d50\u69cb<\/h2>\n
\u8996\u5716\u7684\u5b9a\u7fa9\u4f9d\u8cf4\u65bc\u5176\u57fa\u790e\u8868\u7684\u7d50\u69cb\u3002\u5982\u679c\u57fa\u790e\u8868\u7684\u7d50\u69cb\u767c\u751f\u8b8a\u5316\uff0c\u4f8b\u5982\u5217\u88ab\u522a\u9664\u6216\u6578\u64da\u985e\u578b\u88ab\u66f4\u6539\uff0c\u5247\u4f9d\u8cf4\u65bc\u9019\u4e9b\u5217\u7684\u8996\u5716\u5c07\u6703\u5931\u6548\u3002\u9019\u610f\u5473\u8457\u5728\u9032\u884c\u6578\u64da\u5eab\u8a2d\u8a08\u6642\uff0c\u958b\u767c\u8005\u9700\u8981\u8b39\u614e\u8003\u616e\u8996\u5716\u7684\u4f9d\u8cf4\u6027\uff0c\u4e26\u5728\u57fa\u790e\u8868\u7d50\u69cb\u8b8a\u66f4\u6642\u53ca\u6642\u66f4\u65b0\u8996\u5716\u3002<\/p>\n
-- \u4f8b\u5b50\uff1a\u57fa\u790e\u8868\u7d50\u69cb\u8b8a\u66f4\u5f8c\uff0c\u8996\u5716\u5c07\u5931\u6548\nALTER TABLE MyTable DROP COLUMN column1; -- \u9019\u5c07\u5c0e\u81f4\u4f9d\u8cf4\u65bccolumn1\u7684\u8996\u5716\u5931\u6548\n<\/code><\/pre>\n
4. \u6027\u80fd\u8003\u91cf<\/h2>\n
\u96d6\u7136\u8996\u5716\u53ef\u4ee5\u7c21\u5316\u67e5\u8a62\uff0c\u4f46\u5728\u67d0\u4e9b\u60c5\u6cc1\u4e0b\uff0c\u4f7f\u7528\u8996\u5716\u53ef\u80fd\u6703\u5c0e\u81f4\u6027\u80fd\u4e0b\u964d\u3002\u7279\u5225\u662f\u7576\u8996\u5716\u5305\u542b\u591a\u500b\u806f\u63a5\u6216\u8907\u96dc\u7684\u8a08\u7b97\u6642\uff0c\u67e5\u8a62\u7684\u57f7\u884c\u8a08\u5283\u53ef\u80fd\u6703\u8b8a\u5f97\u4e0d\u5920\u9ad8\u6548\u3002\u958b\u767c\u8005\u61c9\u8a72\u5b9a\u671f\u6aa2\u67e5\u8996\u5716\u7684\u6027\u80fd\uff0c\u4e26\u8003\u616e\u4f7f\u7528\u7d22\u5f15\u8996\u5716\uff08Indexed Views\uff09\u4f86\u63d0\u9ad8\u67e5\u8a62\u6027\u80fd\u3002<\/p>\n
-- \u4f8b\u5b50\uff1a\u5275\u5efa\u7d22\u5f15\u8996\u5716\u4ee5\u63d0\u9ad8\u6027\u80fd\nCREATE VIEW MyIndexedView WITH SCHEMABINDING AS\nSELECT column1, SUM(column2) AS Total\nFROM dbo.MyTable\nGROUP BY column1;\n\nCREATE UNIQUE CLUSTERED INDEX IDX_MyIndexedView ON MyIndexedView (column1); -- \u5275\u5efa\u7d22\u5f15\u4ee5\u63d0\u9ad8\u6027\u80fd\n<\/code><\/pre>\n
\u7e3d\u7d50<\/h2>\n
\u5728SQL Server\u4e2d\uff0c\u8996\u5716\u662f\u4e00\u500b\u5f37\u5927\u7684\u5de5\u5177\uff0c\u4f46\u958b\u767c\u8005\u5728\u4f7f\u7528\u6642\u5fc5\u9808\u4e86\u89e3\u5176\u9650\u5236\u689d\u4ef6\u3002\u9019\u4e9b\u9650\u5236\u5305\u62ec\u4e0d\u652f\u6301\u67d0\u4e9bDML\u64cd\u4f5c\u3001\u4e0d\u80fd\u5305\u542b\u7279\u5b9aSQL\u8a9e\u53e5\u3001\u4f9d\u8cf4\u65bc\u57fa\u790e\u8868\u7684\u7d50\u69cb\u4ee5\u53ca\u6027\u80fd\u8003\u91cf\u3002\u901a\u904e\u5408\u7406\u7684\u8a2d\u8a08\u548c\u7ba1\u7406\uff0c\u958b\u767c\u8005\u53ef\u4ee5\u5145\u5206\u5229\u7528\u8996\u5716\u7684\u512a\u52e2\uff0c\u4e26\u907f\u514d\u6f5b\u5728\u7684\u554f\u984c\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\u4e0d\u540c\u9700\u6c42\u7684\u5ba2\u6236\u3002\u7121\u8ad6\u662f\u4f01\u696d\u7d1a\u61c9\u7528\u9084\u662f\u500b\u4eba\u9805\u76ee\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\u7d22SQL Server\u8996\u5716\u7ba1\u7406\u4e2d\u7684\u56db\u500b\u9650\u5236\u689d\u4ef6\uff0c\u4e86\u89e3\u5982\u4f55\u6709\u6548\u4f7f\u7528\u8996\u5716\u4ee5\u63d0\u5347\u6578\u64da\u67e5\u8a62\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-139077","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/139077","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=139077"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/139077\/revisions"}],"predecessor-version":[{"id":139078,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/139077\/revisions\/139078"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=139077"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=139077"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=139077"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}