{"id":168825,"date":"2024-11-06T16:32:28","date_gmt":"2024-11-06T08:32:28","guid":{"rendered":"https:\/\/server.hk\/cnblog\/168825\/"},"modified":"2024-11-06T16:32:29","modified_gmt":"2024-11-06T08:32:29","slug":"t-sql-%e8%a1%8c%e5%88%97%e7%9b%b8%e4%ba%92%e8%bd%89%e6%8f%9b%e5%91%bd%e4%bb%a4%ef%bc%9apivot-%e5%92%8c-unpivot-%e4%bd%bf%e7%94%a8%e8%a9%b3%e8%a7%a3","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/168825\/","title":{"rendered":"T-SQL \u884c\u5217\u76f8\u4e92\u8f49\u63db\u547d\u4ee4\uff1aPIVOT \u548c UNPIVOT \u4f7f\u7528\u8a73\u89e3"},"content":{"rendered":"<h1 id=\"t-sql-%e8%a1%8c%e5%88%97%e7%9b%b8%e4%ba%92%e8%bd%89%e6%8f%9b%e5%91%bd%e4%bb%a4%ef%bc%9apivot-%e5%92%8c-unpivot-%e4%bd%bf%e7%94%a8%e8%a9%b3%e8%a7%a3-gGxnRXjfns\">T-SQL \u884c\u5217\u76f8\u4e92\u8f49\u63db\u547d\u4ee4\uff1aPIVOT \u548c UNPIVOT \u4f7f\u7528\u8a73\u89e3<\/h1>\n<p>\u5728\u6578\u64da\u5eab\u7ba1\u7406\u4e2d\uff0c\u884c\u5217\u8f49\u63db\u662f\u4e00\u500b\u5e38\u898b\u7684\u9700\u6c42\uff0c\u7279\u5225\u662f\u5728\u5831\u544a\u548c\u6578\u64da\u5206\u6790\u4e2d\u3002T-SQL \u63d0\u4f9b\u4e86\u5169\u500b\u5f37\u5927\u7684\u547d\u4ee4\u4f86\u5be6\u73fe\u9019\u4e00\u529f\u80fd\uff1aPIVOT \u548c UNPIVOT\u3002\u672c\u6587\u5c07\u8a73\u7d30\u4ecb\u7d39\u9019\u5169\u500b\u547d\u4ee4\u7684\u4f7f\u7528\u65b9\u6cd5\u53ca\u5176\u61c9\u7528\u5834\u666f\u3002<\/p>\n<h2 id=\"pivot-%e5%91%bd%e4%bb%a4-gGxnRXjfns\">PIVOT \u547d\u4ee4<\/h2>\n<p>PIVOT \u547d\u4ee4\u7528\u65bc\u5c07\u884c\u6578\u64da\u8f49\u63db\u70ba\u5217\u6578\u64da\uff0c\u9019\u5728\u9700\u8981\u5c07\u6578\u64da\u4ee5\u66f4\u6613\u65bc\u7406\u89e3\u7684\u683c\u5f0f\u5448\u73fe\u6642\u975e\u5e38\u6709\u7528\u3002\u4f8b\u5982\uff0c\u5047\u8a2d\u6211\u5011\u6709\u4e00\u500b\u92b7\u552e\u6578\u64da\u8868\uff0c\u8a18\u9304\u4e86\u4e0d\u540c\u7522\u54c1\u5728\u4e0d\u540c\u6708\u4efd\u7684\u92b7\u552e\u984d\u3002\u6211\u5011\u5e0c\u671b\u5c07\u9019\u4e9b\u6578\u64da\u8f49\u63db\u70ba\u6bcf\u500b\u7522\u54c1\u7684\u92b7\u552e\u984d\u5217\u51fa\u4f86\u3002<\/p>\n<h3 id=\"%e5%9f%ba%e6%9c%ac%e8%aa%9e%e6%b3%95-gGxnRXjfns\">\u57fa\u672c\u8a9e\u6cd5<\/h3>\n<pre><code>\nSELECT , [\u52171], [\u52172], ...\nFROM \n(\n    SELECT , , \n    FROM \n) AS SourceTable\nPIVOT\n(\n    ()\n    FOR  IN ([\u52171], [\u52172], ...)\n) AS PivotTable;\n<\/code><\/pre>\n<h3 id=\"%e7%af%84%e4%be%8b-gGxnRXjfns\">\u7bc4\u4f8b<\/h3>\n<p>\u5047\u8a2d\u6211\u5011\u6709\u4e00\u500b\u540d\u70ba <code>Sales<\/code> \u7684\u8868\uff0c\u7d50\u69cb\u5982\u4e0b\uff1a<\/p>\n<pre><code>\nProduct | Month | Amount\n--------|-------|-------\nA       | Jan   | 100\nA       | Feb   | 150\nB       | Jan   | 200\nB       | Feb   | 250\n<\/code><\/pre>\n<p>\u6211\u5011\u5e0c\u671b\u5c07\u9019\u4e9b\u6578\u64da\u8f49\u63db\u70ba\u6bcf\u500b\u7522\u54c1\u7684\u6bcf\u6708\u92b7\u552e\u984d\uff0c\u4f7f\u7528 PIVOT \u547d\u4ee4\u5982\u4e0b\uff1a<\/p>\n<pre><code>\nSELECT Product, [Jan], [Feb]\nFROM \n(\n    SELECT Product, Month, Amount\n    FROM Sales\n) AS SourceTable\nPIVOT\n(\n    SUM(Amount)\n    FOR Month IN ([Jan], [Feb])\n) AS PivotTable;\n<\/code><\/pre>\n<p>\u57f7\u884c\u4e0a\u8ff0\u67e5\u8a62\u5f8c\uff0c\u7d50\u679c\u5c07\u986f\u793a\u6bcf\u500b\u7522\u54c1\u5728\u4e00\u6708\u548c\u4e8c\u6708\u7684\u92b7\u552e\u984d\uff1a<\/p>\n<pre><code>\nProduct | Jan | Feb\n--------|-----|-----\nA       | 100 | 150\nB       | 200 | 250\n<\/code><\/pre>\n<h2 id=\"unpivot-%e5%91%bd%e4%bb%a4-gGxnRXjfns\">UNPIVOT \u547d\u4ee4<\/h2>\n<p>UNPIVOT \u547d\u4ee4\u5247\u662f\u5c07\u5217\u6578\u64da\u8f49\u63db\u70ba\u884c\u6578\u64da\uff0c\u9019\u5728\u9700\u8981\u5c07\u6578\u64da\u4ee5\u66f4\u8a73\u7d30\u7684\u65b9\u5f0f\u9032\u884c\u5206\u6790\u6642\u975e\u5e38\u6709\u7528\u3002\u4f8b\u5982\uff0c\u5c07\u6bcf\u500b\u7522\u54c1\u7684\u6bcf\u6708\u92b7\u552e\u984d\u8f49\u63db\u56de\u539f\u59cb\u7684\u884c\u683c\u5f0f\u3002<\/p>\n<h3 id=\"%e5%9f%ba%e6%9c%ac%e8%aa%9e%e6%b3%95-gGxnRXjfns\">\u57fa\u672c\u8a9e\u6cd5<\/h3>\n<pre><code>\nSELECT , , \nFROM \n(\n    SELECT , [\u52171], [\u52172], ...\n    FROM \n) AS PivotTable\nUNPIVOT\n(\n     FOR  IN ([\u52171], [\u52172], ...)\n) AS SourceTable;\n<\/code><\/pre>\n<h3 id=\"%e7%af%84%e4%be%8b-gGxnRXjfns\">\u7bc4\u4f8b<\/h3>\n<p>\u57fa\u65bc\u4e4b\u524d\u7684 PIVOT \u7d50\u679c\uff0c\u6211\u5011\u53ef\u4ee5\u4f7f\u7528 UNPIVOT \u5c07\u6578\u64da\u8f49\u63db\u56de\u539f\u59cb\u683c\u5f0f\uff1a<\/p>\n<pre><code>\nSELECT Product, Month, Amount\nFROM \n(\n    SELECT Product, [Jan], [Feb]\n    FROM SalesPivot\n) AS PivotTable\nUNPIVOT\n(\n    Amount FOR Month IN ([Jan], [Feb])\n) AS SourceTable;\n<\/code><\/pre>\n<p>\u57f7\u884c\u4e0a\u8ff0\u67e5\u8a62\u5f8c\uff0c\u7d50\u679c\u5c07\u986f\u793a\u539f\u59cb\u7684\u92b7\u552e\u6578\u64da\uff1a<\/p>\n<pre><code>\nProduct | Month | Amount\n--------|-------|-------\nA       | Jan   | 100\nA       | Feb   | 150\nB       | Jan   | 200\nB       | Feb   | 250\n<\/code><\/pre>\n<h2 id=\"%e7%b8%bd%e7%b5%90-gGxnRXjfns\">\u7e3d\u7d50<\/h2>\n<p>PIVOT \u548c UNPIVOT \u662f T-SQL \u4e2d\u975e\u5e38\u6709\u7528\u7684\u547d\u4ee4\uff0c\u80fd\u5920\u5e6b\u52a9\u7528\u6236\u5728\u6578\u64da\u5206\u6790\u548c\u5831\u544a\u4e2d\u66f4\u9748\u6d3b\u5730\u8655\u7406\u6578\u64da\u3002\u901a\u904e\u9019\u4e9b\u547d\u4ee4\uff0c\u7528\u6236\u53ef\u4ee5\u8f15\u9b06\u5730\u5c07\u6578\u64da\u8f49\u63db\u70ba\u6240\u9700\u7684\u683c\u5f0f\uff0c\u5f9e\u800c\u63d0\u9ad8\u6578\u64da\u7684\u53ef\u8b80\u6027\u548c\u53ef\u7528\u6027\u3002<\/p>\n<p>\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u9ad8\u6548\u7684 <a href=\"https:\/\/server.hk\">VPS<\/a> \u89e3\u6c7a\u65b9\u6848\u4f86\u652f\u6301\u60a8\u7684\u6578\u64da\u5eab\u9700\u6c42\uff0cServer.HK \u63d0\u4f9b\u591a\u7a2e\u9078\u64c7\uff0c\u9069\u5408\u5404\u7a2e\u696d\u52d9\u9700\u6c42\u3002\u7121\u8ad6\u662f <a href=\"https:\/\/server.hk\">\u9999\u6e2f\u4f3a\u670d\u5668<\/a> \u9084\u662f <a href=\"https:\/\/server.hk\">\u4e91\u4f3a\u670d\u5668<\/a>\uff0c\u6211\u5011\u90fd\u80fd\u70ba\u60a8\u63d0\u4f9b\u7a69\u5b9a\u7684\u670d\u52d9\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u6df1\u5165\u63a2\u8a0e T-SQL \u4e2d\u7684 PIVOT \u548c UNPIVOT \u547d\u4ee4\uff0c\u5b78\u7fd2\u5982\u4f55\u6709\u6548\u5730\u9032\u884c\u884c\u5217\u76f8\u4e92\u8f49\u63db\uff0c\u63d0\u5347\u6578\u64da\u8655\u7406\u80fd\u529b\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-168825","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/168825","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=168825"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/168825\/revisions"}],"predecessor-version":[{"id":168826,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/168825\/revisions\/168826"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=168825"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=168825"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=168825"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}