{"id":140772,"date":"2024-10-31T20:57:19","date_gmt":"2024-10-31T12:57:19","guid":{"rendered":"https:\/\/server.hk\/cnblog\/140772\/"},"modified":"2024-10-31T20:57:20","modified_gmt":"2024-10-31T12:57:20","slug":"sql-server-%e8%a1%8c%e8%bd%89%e5%88%97%e7%9a%84%e4%bb%80%e9%ba%bc%e6%83%85%e6%b3%81%e4%b8%8b%e8%a2%ab%e7%94%a8%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/140772\/","title":{"rendered":"SQL Server \u884c\u8f49\u5217\u7684\u4ec0\u9ebc\u60c5\u6cc1\u4e0b\u88ab\u7528\uff1f"},"content":{"rendered":"<h1 id=\"sql-server-%e8%a1%8c%e8%bd%89%e5%88%97%e7%9a%84%e4%bb%80%e9%ba%bc%e6%83%85%e6%b3%81%e4%b8%8b%e8%a2%ab%e7%94%a8%ef%bc%9f-bgzTDMeEqW\">SQL Server \u884c\u8f49\u5217\u7684\u4ec0\u9ebc\u60c5\u6cc1\u4e0b\u88ab\u7528\uff1f<\/h1>\n<p>\u5728\u8cc7\u6599\u5eab\u7ba1\u7406\u4e2d\uff0c\u884c\u8f49\u5217\uff08Row to Column\uff09\u662f\u4e00\u7a2e\u5e38\u898b\u7684\u64cd\u4f5c\uff0c\u7279\u5225\u662f\u5728\u4f7f\u7528 SQL Server \u6642\u3002\u9019\u7a2e\u64cd\u4f5c\u7684\u4e3b\u8981\u76ee\u7684\u662f\u5c07\u8cc7\u6599\u8868\u4e2d\u7684\u884c\u6578\u64da\u8f49\u63db\u70ba\u5217\u6578\u64da\uff0c\u4ee5\u4fbf\u66f4\u65b9\u4fbf\u5730\u9032\u884c\u5206\u6790\u548c\u5831\u544a\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u884c\u8f49\u5217\u7684\u61c9\u7528\u60c5\u6cc1\u3001\u5be6\u73fe\u65b9\u6cd5\u4ee5\u53ca\u76f8\u95dc\u7684\u7bc4\u4f8b\u3002<\/p>\n<h2 id=\"%e8%a1%8c%e8%bd%89%e5%88%97%e7%9a%84%e6%87%89%e7%94%a8%e6%83%85%e6%b3%81-bgzTDMeEqW\">\u884c\u8f49\u5217\u7684\u61c9\u7528\u60c5\u6cc1<\/h2>\n<p>\u884c\u8f49\u5217\u7684\u64cd\u4f5c\u901a\u5e38\u5728\u4ee5\u4e0b\u5e7e\u7a2e\u60c5\u6cc1\u4e0b\u88ab\u4f7f\u7528\uff1a<\/p>\n<ul>\n<li><strong>\u6578\u64da\u5831\u544a\u9700\u6c42\uff1a<\/strong>\u7576\u9700\u8981\u5c07\u591a\u884c\u6578\u64da\u532f\u7e3d\u6210\u4e00\u500b\u5831\u544a\u6642\uff0c\u884c\u8f49\u5217\u53ef\u4ee5\u4f7f\u5831\u544a\u66f4\u5177\u53ef\u8b80\u6027\u3002\u4f8b\u5982\uff0c\u5c07\u6bcf\u500b\u7522\u54c1\u7684\u92b7\u552e\u6578\u64da\u5f9e\u591a\u884c\u8f49\u63db\u70ba\u55ae\u884c\u986f\u793a\uff0c\u4fbf\u65bc\u6bd4\u8f03\u3002<\/li>\n<li><strong>\u6578\u64da\u5206\u6790\uff1a<\/strong>\u5728\u9032\u884c\u6578\u64da\u5206\u6790\u6642\uff0c\u5c07\u884c\u6578\u64da\u8f49\u63db\u70ba\u5217\u6578\u64da\u53ef\u4ee5\u5e6b\u52a9\u5206\u6790\u5e2b\u66f4\u6e05\u6670\u5730\u8b58\u5225\u8da8\u52e2\u548c\u6a21\u5f0f\u3002\u4f8b\u5982\uff0c\u5c07\u6bcf\u500b\u6708\u7684\u92b7\u552e\u6578\u64da\u8f49\u63db\u70ba\u5217\uff0c\u4ee5\u4fbf\u65bc\u5e74\u5ea6\u6bd4\u8f03\u3002<\/li>\n<li><strong>\u6578\u64da\u53ef\u8996\u5316\uff1a<\/strong>\u5728\u5275\u5efa\u5716\u8868\u6216\u5100\u8868\u677f\u6642\uff0c\u884c\u8f49\u5217\u53ef\u4ee5\u4f7f\u6578\u64da\u66f4\u5bb9\u6613\u88ab\u8996\u89ba\u5316\u3002\u4f8b\u5982\uff0c\u5c07\u6bcf\u500b\u5b63\u5ea6\u7684\u696d\u7e3e\u6578\u64da\u8f49\u63db\u70ba\u5217\uff0c\u4ee5\u4fbf\u65bc\u751f\u6210\u67f1\u72c0\u5716\u6216\u6298\u7dda\u5716\u3002<\/li>\n<\/ul>\n<h2 id=\"%e8%a1%8c%e8%bd%89%e5%88%97%e7%9a%84%e5%af%a6%e7%8f%be%e6%96%b9%e6%b3%95-bgzTDMeEqW\">\u884c\u8f49\u5217\u7684\u5be6\u73fe\u65b9\u6cd5<\/h2>\n<p>\u5728 SQL Server \u4e2d\uff0c\u884c\u8f49\u5217\u7684\u64cd\u4f5c\u901a\u5e38\u53ef\u4ee5\u901a\u904e\u4f7f\u7528 <code>PIVOT<\/code> \u51fd\u6578\u4f86\u5be6\u73fe\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u7c21\u55ae\u7684\u7bc4\u4f8b\uff0c\u5c55\u793a\u5982\u4f55\u4f7f\u7528 <code>PIVOT<\/code> \u4f86\u5c07\u884c\u6578\u64da\u8f49\u63db\u70ba\u5217\u6578\u64da\u3002<\/p>\n<h3 id=\"%e7%af%84%e4%be%8b%ef%bc%9a%e4%bd%bf%e7%94%a8-pivot-%e9%80%b2%e8%a1%8c%e8%a1%8c%e8%bd%89%e5%88%97-bgzTDMeEqW\">\u7bc4\u4f8b\uff1a\u4f7f\u7528 PIVOT \u9032\u884c\u884c\u8f49\u5217<\/h3>\n<p>\u5047\u8a2d\u6211\u5011\u6709\u4e00\u500b\u540d\u70ba <code>Sales<\/code> \u7684\u8cc7\u6599\u8868\uff0c\u7d50\u69cb\u5982\u4e0b\uff1a<\/p>\n<pre>\n| Product | Month | SalesAmount |\n|---------|-------|-------------|\n| A       | Jan   | 100         |\n| A       | Feb   | 150         |\n| B       | Jan   | 200         |\n| B       | Feb   | 250         |\n<\/pre>\n<p>\u6211\u5011\u5e0c\u671b\u5c07\u6bcf\u500b\u7522\u54c1\u7684\u92b7\u552e\u6578\u64da\u6309\u6708\u4efd\u8f49\u63db\u70ba\u5217\u3002\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b SQL \u67e5\u8a62\uff1a<\/p>\n<pre>\nSELECT Product, [Jan], [Feb]\nFROM\n(\n    SELECT Product, Month, SalesAmount\n    FROM Sales\n) AS SourceTable\nPIVOT\n(\n    SUM(SalesAmount)\n    FOR Month IN ([Jan], [Feb])\n) AS PivotTable;\n<\/pre>\n<p>\u57f7\u884c\u4e0a\u8ff0\u67e5\u8a62\u5f8c\uff0c\u7d50\u679c\u5c07\u5982\u4e0b\u6240\u793a\uff1a<\/p>\n<pre>\n| Product | Jan | Feb |\n|---------|-----|-----|\n| A       | 100 | 150 |\n| B       | 200 | 250 |\n<\/pre>\n<h2 id=\"%e6%b3%a8%e6%84%8f%e4%ba%8b%e9%a0%85-bgzTDMeEqW\">\u6ce8\u610f\u4e8b\u9805<\/h2>\n<p>\u5728\u4f7f\u7528\u884c\u8f49\u5217\u6642\uff0c\u6709\u5e7e\u9ede\u9700\u8981\u6ce8\u610f\uff1a<\/p>\n<ul>\n<li><strong>\u5217\u540d\u7684\u975c\u614b\u6027\uff1a<\/strong>\u4f7f\u7528 <code>PIVOT<\/code> \u6642\uff0c\u5217\u540d\u5fc5\u9808\u662f\u975c\u614b\u7684\uff0c\u9019\u610f\u5473\u8457\u5728\u67e5\u8a62\u4e2d\u5fc5\u9808\u660e\u78ba\u6307\u5b9a\u8981\u8f49\u63db\u7684\u5217\u3002<\/li>\n<li><strong>\u6027\u80fd\u8003\u91cf\uff1a<\/strong>\u5c0d\u65bc\u5927\u578b\u8cc7\u6599\u96c6\uff0c\u884c\u8f49\u5217\u64cd\u4f5c\u53ef\u80fd\u6703\u5f71\u97ff\u6027\u80fd\uff0c\u56e0\u6b64\u5728\u8a2d\u8a08\u8cc7\u6599\u5eab\u6642\u61c9\u8003\u616e\u5230\u9019\u4e00\u9ede\u3002<\/li>\n<li><strong>\u6578\u64da\u5b8c\u6574\u6027\uff1a<\/strong>\u78ba\u4fdd\u5728\u8f49\u63db\u904e\u7a0b\u4e2d\u4e0d\u6703\u4e1f\u5931\u4efb\u4f55\u91cd\u8981\u7684\u6578\u64da\uff0c\u7279\u5225\u662f\u5728\u9032\u884c\u805a\u5408\u8a08\u7b97\u6642\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b8%bd%e7%b5%90-bgzTDMeEqW\">\u7e3d\u7d50<\/h2>\n<p>\u884c\u8f49\u5217\u662f\u4e00\u7a2e\u5f37\u5927\u7684\u6578\u64da\u8655\u7406\u6280\u8853\uff0c\u80fd\u5920\u5e6b\u52a9\u7528\u6236\u66f4\u6709\u6548\u5730\u5206\u6790\u548c\u5831\u544a\u6578\u64da\u3002\u5728 SQL Server \u4e2d\uff0c\u901a\u904e\u4f7f\u7528 <code>PIVOT<\/code> \u51fd\u6578\uff0c\u53ef\u4ee5\u8f15\u9b06\u5730\u5c07\u884c\u6578\u64da\u8f49\u63db\u70ba\u5217\u6578\u64da\uff0c\u5f9e\u800c\u63d0\u9ad8\u6578\u64da\u7684\u53ef\u8b80\u6027\u548c\u53ef\u8996\u5316\u6548\u679c\u3002\u5c0d\u65bc\u9700\u8981\u9032\u884c\u6578\u64da\u5206\u6790\u548c\u5831\u544a\u7684\u4f01\u696d\u4f86\u8aaa\uff0c\u638c\u63e1\u884c\u8f49\u5217\u7684\u6280\u8853\u662f\u975e\u5e38\u91cd\u8981\u7684\u3002<\/p>\n<p>\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u9ad8\u6548\u7684 <a href=\"https:\/\/server.hk\">\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\u6578\u64da\u5eab\u7ba1\u7406\u9084\u662f\u7db2\u7ad9\u6258\u7ba1\uff0c\u6211\u5011\u7684 <a href=\"https:\/\/server.hk\">\u4e91\u670d\u52a1\u5668<\/a> \u90fd\u80fd\u70ba\u60a8\u63d0\u4f9b\u7a69\u5b9a\u7684\u652f\u6301\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4e86\u89e3SQL Server\u884c\u8f49\u5217\u7684\u61c9\u7528\u60c5\u6cc1\uff0c\u5305\u62ec\u6578\u64da\u5831\u544a\u3001\u6578\u64da\u5206\u6790\u548c\u6578\u64da\u53ef\u8996\u5316\u7b49\u5834\u666f\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-140772","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/140772","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=140772"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/140772\/revisions"}],"predecessor-version":[{"id":140773,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/140772\/revisions\/140773"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=140772"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=140772"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=140772"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}