{"id":66099,"date":"2024-10-14T14:28:16","date_gmt":"2024-10-14T06:28:16","guid":{"rendered":"https:\/\/server.hk\/cnblog\/66099\/"},"modified":"2024-10-14T14:28:16","modified_gmt":"2024-10-14T06:28:16","slug":"mssql%e5%af%a6%e7%8f%be%e5%be%9e%e8%b1%8e%e8%a1%a8%e8%ae%8a%e6%a9%ab%e8%a1%a8%ef%bc%88mssql%e8%b1%8e%e8%a1%a8%e8%ae%8a%e6%a9%ab%e8%a1%a8%ef%bc%89","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/66099\/","title":{"rendered":"MSSQL\u5be6\u73fe\u5f9e\u8c4e\u8868\u8b8a\u6a6b\u8868\uff08mssql\u8c4e\u8868\u8b8a\u6a6b\u8868\uff09"},"content":{"rendered":"<h1 id=\"mssql%e5%af%a6%e7%8f%be%e5%be%9e%e8%b1%8e%e8%a1%a8%e8%ae%8a%e6%a9%ab%e8%a1%a8%ef%bc%88mssql%e8%b1%8e%e8%a1%a8%e8%ae%8a%e6%a9%ab%e8%a1%a8%ef%bc%89-MvLVXeHaQz\">MSSQL\u5be6\u73fe\u5f9e\u8c4e\u8868\u8b8a\u6a6b\u8868\uff08mssql\u8c4e\u8868\u8b8a\u6a6b\u8868\uff09<\/h1>\n<p>\u5728\u6578\u64da\u5eab\u7ba1\u7406\u4e2d\uff0c\u8c4e\u8868\uff08\u6216\u7a31\u70ba\u9577\u683c\u5f0f\uff09\u548c\u6a6b\u8868\uff08\u6216\u7a31\u70ba\u5bec\u683c\u5f0f\uff09\u662f\u5169\u7a2e\u5e38\u898b\u7684\u6578\u64da\u8868\u793a\u65b9\u5f0f\u3002\u8c4e\u8868\u901a\u5e38\u7528\u65bc\u5b58\u5132\u591a\u884c\u6578\u64da\uff0c\u800c\u6a6b\u8868\u5247\u5c07\u9019\u4e9b\u6578\u64da\u8f49\u63db\u70ba\u5217\u7684\u5f62\u5f0f\uff0c\u4fbf\u65bc\u5206\u6790\u548c\u5831\u544a\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u5982\u4f55\u5728Microsoft SQL Server\uff08MSSQL\uff09\u4e2d\u5be6\u73fe\u5f9e\u8c4e\u8868\u5230\u6a6b\u8868\u7684\u8f49\u63db\uff0c\u4e26\u63d0\u4f9b\u76f8\u95dc\u7684\u793a\u4f8b\u548c\u4ee3\u78bc\u3002<\/p>\n<h2 id=\"%e8%b1%8e%e8%a1%a8%e8%88%87%e6%a9%ab%e8%a1%a8%e7%9a%84%e5%ae%9a%e7%be%a9-MvLVXeHaQz\">\u8c4e\u8868\u8207\u6a6b\u8868\u7684\u5b9a\u7fa9<\/h2>\n<p>\u8c4e\u8868\u662f\u6307\u6bcf\u4e00\u884c\u4ee3\u8868\u4e00\u500b\u5be6\u9ad4\u7684\u5c6c\u6027\uff0c\u800c\u6bcf\u4e00\u5217\u5247\u4ee3\u8868\u4e0d\u540c\u7684\u5c6c\u6027\u3002\u4f8b\u5982\uff0c\u8003\u616e\u4e00\u500b\u5b78\u751f\u7684\u6210\u7e3e\u8868\uff0c\u53ef\u80fd\u6703\u6709\u4ee5\u4e0b\u7d50\u69cb\uff1a<\/p>\n<pre>\n| \u5b78\u751fID | \u79d1\u76ee   | \u6210\u7e3e |\n|--------|--------|------|\n| 1      | \u6578\u5b78   | 85   |\n| 1      | \u82f1\u6587   | 90   |\n| 2      | \u6578\u5b78   | 78   |\n| 2      | \u82f1\u6587   | 88   |\n<\/pre>\n<p>\u800c\u6a6b\u8868\u5247\u5c07\u9019\u4e9b\u6578\u64da\u8f49\u63db\u70ba\u6bcf\u500b\u5b78\u751f\u7684\u6210\u7e3e\u5728\u540c\u4e00\u884c\u4e2d\u986f\u793a\uff1a<\/p>\n<pre>\n| \u5b78\u751fID | \u6578\u5b78 | \u82f1\u6587 |\n|--------|------|------|\n| 1      | 85   | 90   |\n| 2      | 78   | 88   |\n<\/pre>\n<h2 id=\"%e4%bd%bf%e7%94%a8pivot%e5%af%a6%e7%8f%be%e8%b1%8e%e8%a1%a8%e5%88%b0%e6%a9%ab%e8%a1%a8%e7%9a%84%e8%bd%89%e6%8f%9b-MvLVXeHaQz\">\u4f7f\u7528PIVOT\u5be6\u73fe\u8c4e\u8868\u5230\u6a6b\u8868\u7684\u8f49\u63db<\/h2>\n<p>\u5728MSSQL\u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528PIVOT\u64cd\u4f5c\u4f86\u5be6\u73fe\u8c4e\u8868\u5230\u6a6b\u8868\u7684\u8f49\u63db\u3002PIVOT\u662f\u4e00\u500b\u975e\u5e38\u5f37\u5927\u7684\u529f\u80fd\uff0c\u80fd\u5920\u5c07\u884c\u6578\u64da\u8f49\u63db\u70ba\u5217\u6578\u64da\u3002\u4ee5\u4e0b\u662f\u4f7f\u7528PIVOT\u7684\u57fa\u672c\u8a9e\u6cd5\uff1a<\/p>\n<pre>\nSELECT , , ...\nFROM\n(\n    SELECT , , \n    FROM \n) AS SourceTable\nPIVOT\n(\n    SUM()\n    FOR  IN (, , ...)\n) AS PivotTable;\n<\/pre>\n<h3 id=\"%e7%a4%ba%e4%be%8b%ef%bc%9a%e5%b0%87%e5%ad%b8%e7%94%9f%e6%88%90%e7%b8%be%e5%be%9e%e8%b1%8e%e8%a1%a8%e8%bd%89%e6%8f%9b%e7%82%ba%e6%a9%ab%e8%a1%a8-MvLVXeHaQz\">\u793a\u4f8b\uff1a\u5c07\u5b78\u751f\u6210\u7e3e\u5f9e\u8c4e\u8868\u8f49\u63db\u70ba\u6a6b\u8868<\/h3>\n<p>\u5047\u8a2d\u6211\u5011\u6709\u4e00\u500b\u540d\u70ba\u201cStudentScores\u201d\u7684\u8868\uff0c\u7d50\u69cb\u5982\u4e0a\u6240\u793a\u3002\u4ee5\u4e0b\u662f\u5c07\u5176\u8f49\u63db\u70ba\u6a6b\u8868\u7684SQL\u67e5\u8a62\uff1a<\/p>\n<pre>\nSELECT \u5b78\u751fID, [\u6578\u5b78], [\u82f1\u6587]\nFROM\n(\n    SELECT \u5b78\u751fID, \u79d1\u76ee, \u6210\u7e3e\n    FROM StudentScores\n) AS SourceTable\nPIVOT\n(\n    SUM(\u6210\u7e3e)\n    FOR \u79d1\u76ee IN ([\u6578\u5b78], [\u82f1\u6587])\n) AS PivotTable;\n<\/pre>\n<p>\u9019\u6bb5\u4ee3\u78bc\u9996\u5148\u9078\u64c7\u4e86\u9700\u8981\u7684\u884c\u6578\u64da\uff0c\u7136\u5f8c\u4f7f\u7528PIVOT\u5c07\u201c\u79d1\u76ee\u201d\u5217\u7684\u6578\u64da\u8f49\u63db\u70ba\u6a6b\u5411\u7684\u5217\uff0c\u4e26\u8a08\u7b97\u6bcf\u500b\u79d1\u76ee\u7684\u7e3d\u6210\u7e3e\u3002<\/p>\n<h2 id=\"%e6%b3%a8%e6%84%8f%e4%ba%8b%e9%a0%85-MvLVXeHaQz\">\u6ce8\u610f\u4e8b\u9805<\/h2>\n<ul>\n<li>\u5728\u4f7f\u7528PIVOT\u6642\uff0c\u5fc5\u9808\u78ba\u4fdd\u5217\u540d\u662f\u552f\u4e00\u7684\uff0c\u5426\u5247\u6703\u5c0e\u81f4\u932f\u8aa4\u3002<\/li>\n<li>\u5982\u679c\u9700\u8981\u52d5\u614b\u751f\u6210\u5217\u540d\uff0c\u53ef\u4ee5\u4f7f\u7528\u52d5\u614bSQL\u4f86\u5be6\u73fe\u3002<\/li>\n<li>\u5728\u8655\u7406\u5927\u91cf\u6578\u64da\u6642\uff0cPIVOT\u64cd\u4f5c\u53ef\u80fd\u6703\u5f71\u97ff\u6027\u80fd\uff0c\u5efa\u8b70\u5728\u5fc5\u8981\u6642\u9032\u884c\u512a\u5316\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b5%90%e8%ab%96-MvLVXeHaQz\">\u7d50\u8ad6<\/h2>\n<p>\u5f9e\u8c4e\u8868\u5230\u6a6b\u8868\u7684\u8f49\u63db\u5728\u6578\u64da\u5206\u6790\u4e2d\u662f\u975e\u5e38\u91cd\u8981\u7684\uff0c\u7279\u5225\u662f\u5728\u9700\u8981\u9032\u884c\u5831\u544a\u548c\u53ef\u8996\u5316\u6642\u3002MSSQL\u63d0\u4f9b\u4e86PIVOT\u529f\u80fd\uff0c\u4f7f\u5f97\u9019\u4e00\u904e\u7a0b\u8b8a\u5f97\u7c21\u55ae\u800c\u9ad8\u6548\u3002\u901a\u904e\u672c\u6587\u7684\u793a\u4f8b\u548c\u4ee3\u78bc\uff0c\u60a8\u61c9\u8a72\u80fd\u5920\u5728\u81ea\u5df1\u7684\u6578\u64da\u5eab\u4e2d\u5be6\u73fe\u9019\u4e00\u8f49\u63db\u3002<\/p>\n<p>\u5982\u9700\u9032\u4e00\u6b65\u4e86\u89e3\u5982\u4f55\u4f7f\u7528MSSQL\u9032\u884c\u6578\u64da\u8655\u7406\uff0c\u6216\u5c0b\u627e\u5408\u9069\u7684 <a href=\"https:\/\/server.hk\">VPS<\/a> \u89e3\u6c7a\u65b9\u6848\uff0c\u8acb\u8a2a\u554f\u6211\u5011\u7684\u7db2\u7ad9\u4ee5\u7372\u53d6\u66f4\u591a\u4fe1\u606f\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4e86\u89e3\u5982\u4f55\u5728MSSQL\u4e2d\u5c07\u8c4e\u8868\u8f49\u63db\u70ba\u6a6b\u8868\uff0c\u63d0\u5347\u6578\u64da\u5206\u6790\u6548\u7387\uff0c\u7c21\u5316\u67e5\u8a62\u904e\u7a0b\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-66099","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/66099","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=66099"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/66099\/revisions"}],"predecessor-version":[{"id":66100,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/66099\/revisions\/66100"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=66099"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=66099"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=66099"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}