{"id":139221,"date":"2024-10-31T18:14:21","date_gmt":"2024-10-31T10:14:21","guid":{"rendered":"https:\/\/server.hk\/cnblog\/139221\/"},"modified":"2024-10-31T18:14:22","modified_gmt":"2024-10-31T10:14:22","slug":"sql-server%e6%95%b8%e6%93%9a%e5%ba%abrow_number-over%e4%be%86%e8%87%aa%e5%8b%95%e7%94%a2%e7%94%9f%e8%a1%8c%e8%99%9f","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/139221\/","title":{"rendered":"SQL Server\u6578\u64da\u5eabrow_number() over()\u4f86\u81ea\u52d5\u7522\u751f\u884c\u865f"},"content":{"rendered":"<h1 id=\"sql-server%e6%95%b8%e6%93%9a%e5%ba%abrow_number-over%e4%be%86%e8%87%aa%e5%8b%95%e7%94%a2%e7%94%9f%e8%a1%8c%e8%99%9f-RbGVLmSTBq\">SQL Server\u6578\u64da\u5eabrow_number() over()\u4f86\u81ea\u52d5\u7522\u751f\u884c\u865f<\/h1>\n<p>\u5728\u6578\u64da\u5eab\u7ba1\u7406\u4e2d\uff0c\u884c\u865f\u7684\u751f\u6210\u662f\u4e00\u500b\u5e38\u898b\u7684\u9700\u6c42\uff0c\u5c24\u5176\u662f\u5728\u9700\u8981\u5c0d\u67e5\u8a62\u7d50\u679c\u9032\u884c\u6392\u5e8f\u6216\u5206\u7d44\u6642\u3002SQL Server\u63d0\u4f9b\u4e86\u4e00\u500b\u975e\u5e38\u65b9\u4fbf\u7684\u51fd\u6578\u2014\u2014<code>ROW_NUMBER()<\/code>\uff0c\u53ef\u4ee5\u7528\u4f86\u81ea\u52d5\u751f\u6210\u884c\u865f\u3002\u672c\u6587\u5c07\u6df1\u5165\u63a2\u8a0e<code>ROW_NUMBER()<\/code>\u51fd\u6578\u7684\u7528\u6cd5\u53ca\u5176\u5728\u5be6\u969b\u61c9\u7528\u4e2d\u7684\u793a\u4f8b\u3002<\/p>\n<h2 id=\"row_number%e5%87%bd%e6%95%b8%e6%a6%82%e8%bf%b0-RbGVLmSTBq\">ROW_NUMBER()\u51fd\u6578\u6982\u8ff0<\/h2>\n<p><code>ROW_NUMBER()<\/code>\u662f\u4e00\u500b\u7a97\u53e3\u51fd\u6578\uff0c\u80fd\u5920\u70ba\u67e5\u8a62\u7d50\u679c\u96c6\u4e2d\u7684\u6bcf\u4e00\u884c\u5206\u914d\u4e00\u500b\u552f\u4e00\u7684\u884c\u865f\u3002\u9019\u500b\u884c\u865f\u662f\u6839\u64da\u6307\u5b9a\u7684\u6392\u5e8f\u689d\u4ef6\u751f\u6210\u7684\uff0c\u4e26\u4e14\u5728\u6bcf\u6b21\u67e5\u8a62\u6642\u90fd\u6703\u91cd\u65b0\u8a08\u7b97\u3002\u9019\u4f7f\u5f97<code>ROW_NUMBER()<\/code>\u5728\u9700\u8981\u5c0d\u6578\u64da\u9032\u884c\u6392\u5e8f\u6216\u5206\u7d44\u7684\u60c5\u6cc1\u4e0b\u975e\u5e38\u6709\u7528\u3002<\/p>\n<h2 id=\"row_number%e7%9a%84%e8%aa%9e%e6%b3%95-RbGVLmSTBq\">ROW_NUMBER()\u7684\u8a9e\u6cd5<\/h2>\n<p>\u4f7f\u7528<code>ROW_NUMBER()<\/code>\u51fd\u6578\u7684\u57fa\u672c\u8a9e\u6cd5\u5982\u4e0b\uff1a<\/p>\n<pre><code>\nROW_NUMBER() OVER (ORDER BY column_name [ASC|DESC])\n<\/code><\/pre>\n<p>\u5728\u9019\u88e1\uff0c<code>column_name<\/code>\u662f\u7528\u4f86\u6392\u5e8f\u7684\u5217\u540d\uff0c<code>ASC<\/code>\u8868\u793a\u5347\u5e8f\uff0c<code>DESC<\/code>\u8868\u793a\u964d\u5e8f\u3002<\/p>\n<h2 id=\"%e4%bd%bf%e7%94%a8%e7%a4%ba%e4%be%8b-RbGVLmSTBq\">\u4f7f\u7528\u793a\u4f8b<\/h2>\n<p>\u5047\u8a2d\u6211\u5011\u6709\u4e00\u500b\u540d\u70ba<code>Employees<\/code>\u7684\u8868\uff0c\u5305\u542b\u4ee5\u4e0b\u5b57\u6bb5\uff1a<code>EmployeeID<\/code>\u3001<code>Name<\/code>\u548c<code>Salary<\/code>\u3002\u6211\u5011\u5e0c\u671b\u6839\u64da\u85aa\u6c34\u5c0d\u54e1\u5de5\u9032\u884c\u6392\u5e8f\u4e26\u751f\u6210\u884c\u865f\u3002\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0bSQL\u67e5\u8a62\uff1a<\/p>\n<pre><code>\nSELECT \n    EmployeeID,\n    Name,\n    Salary,\n    ROW_NUMBER() OVER (ORDER BY Salary DESC) AS RowNum\nFROM \n    Employees;\n<\/code><\/pre>\n<p>\u9019\u500b\u67e5\u8a62\u5c07\u8fd4\u56de\u6240\u6709\u54e1\u5de5\u7684ID\u3001\u59d3\u540d\u3001\u85aa\u6c34\u4ee5\u53ca\u6839\u64da\u85aa\u6c34\u964d\u5e8f\u6392\u5217\u7684\u884c\u865f\u3002\u884c\u865f\u5c07\u5f9e1\u958b\u59cb\uff0c\u5c0d\u61c9\u65bc\u85aa\u6c34\u6700\u9ad8\u7684\u54e1\u5de5\u3002<\/p>\n<h2 id=\"%e5%88%86%e7%b5%84%e8%a1%8c%e8%99%9f%e7%9a%84%e7%94%9f%e6%88%90-RbGVLmSTBq\">\u5206\u7d44\u884c\u865f\u7684\u751f\u6210<\/h2>\n<p>\u9664\u4e86\u57fa\u672c\u7684\u884c\u865f\u751f\u6210\uff0c<code>ROW_NUMBER()<\/code>\u9084\u53ef\u4ee5\u8207<code>PARTITION BY<\/code>\u5b50\u53e5\u7d50\u5408\u4f7f\u7528\uff0c\u4ee5\u4fbf\u5728\u5206\u7d44\u7684\u57fa\u790e\u4e0a\u751f\u6210\u884c\u865f\u3002\u4f8b\u5982\uff0c\u5982\u679c\u6211\u5011\u60f3\u8981\u6839\u64da\u90e8\u9580\u5c0d\u54e1\u5de5\u9032\u884c\u5206\u7d44\u4e26\u751f\u6210\u884c\u865f\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u67e5\u8a62\uff1a<\/p>\n<pre><code>\nSELECT \n    EmployeeID,\n    Name,\n    Salary,\n    Department,\n    ROW_NUMBER() OVER (PARTITION BY Department ORDER BY Salary DESC) AS RowNum\nFROM \n    Employees;\n<\/code><\/pre>\n<p>\u5728\u9019\u500b\u67e5\u8a62\u4e2d\uff0c<code>PARTITION BY Department<\/code>\u5c07\u54e1\u5de5\u6839\u64da\u90e8\u9580\u9032\u884c\u5206\u7d44\uff0c\u7136\u5f8c\u5728\u6bcf\u500b\u90e8\u9580\u5167\u6839\u64da\u85aa\u6c34\u964d\u5e8f\u751f\u6210\u884c\u865f\u3002\u9019\u6a23\uff0c\u6bcf\u500b\u90e8\u9580\u7684\u884c\u865f\u90fd\u662f\u7368\u7acb\u7684\u3002<\/p>\n<h2 id=\"%e5%af%a6%e9%9a%9b%e6%87%89%e7%94%a8%e5%a0%b4%e6%99%af-RbGVLmSTBq\">\u5be6\u969b\u61c9\u7528\u5834\u666f<\/h2>\n<p><code>ROW_NUMBER()<\/code>\u51fd\u6578\u5728\u8a31\u591a\u5be6\u969b\u61c9\u7528\u4e2d\u90fd\u975e\u5e38\u6709\u7528\uff0c\u4f8b\u5982\uff1a<\/p>\n<ul>\n<li>\u751f\u6210\u5831\u544a\u6642\u9700\u8981\u5c0d\u6578\u64da\u9032\u884c\u6392\u5e8f\u548c\u7de8\u865f\u3002<\/li>\n<li>\u5728\u7db2\u9801\u61c9\u7528\u4e2d\u5be6\u73fe\u5206\u9801\u529f\u80fd\uff0c\u986f\u793a\u7279\u5b9a\u7bc4\u570d\u7684\u6578\u64da\u3002<\/li>\n<li>\u5728\u6578\u64da\u5206\u6790\u4e2d\uff0c\u5c0d\u7279\u5b9a\u689d\u4ef6\u4e0b\u7684\u6578\u64da\u9032\u884c\u6392\u540d\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b8%bd%e7%b5%90-RbGVLmSTBq\">\u7e3d\u7d50<\/h2>\n<p>SQL Server\u7684<code>ROW_NUMBER()<\/code>\u51fd\u6578\u662f\u4e00\u500b\u5f37\u5927\u7684\u5de5\u5177\uff0c\u53ef\u4ee5\u5e6b\u52a9\u7528\u6236\u81ea\u52d5\u751f\u6210\u884c\u865f\uff0c\u4e26\u6839\u64da\u7279\u5b9a\u7684\u6392\u5e8f\u689d\u4ef6\u9032\u884c\u7de8\u865f\u3002\u7121\u8ad6\u662f\u5728\u5831\u544a\u751f\u6210\u3001\u6578\u64da\u5206\u6790\u9084\u662f\u7db2\u9801\u61c9\u7528\u4e2d\uff0c<code>ROW_NUMBER()<\/code>\u90fd\u80fd\u63d0\u4f9b\u9748\u6d3b\u7684\u89e3\u6c7a\u65b9\u6848\u3002\u5c0d\u65bc\u9700\u8981\u9ad8\u6548\u6578\u64da\u8655\u7406\u7684\u7528\u6236\uff0c\u9078\u64c7\u5408\u9069\u7684<code>VPS<\/code>\u6216<code>\u9999\u6e2f\u4f3a\u670d\u5668<\/code>\u4f86\u904b\u884cSQL Server\u5c07\u662f\u660e\u667a\u7684\u9078\u64c7\u3002\u6b32\u4e86\u89e3\u66f4\u591a\u6709\u95dc<code>VPS<\/code>\u548c<code>\u9999\u6e2f\u4f3a\u670d\u5668<\/code>\u7684\u8cc7\u8a0a\uff0c\u8acb\u8a2a\u554f<a href=\"https:\/\/server.hk\">Server.HK<\/a>\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4e86\u89e3\u5982\u4f55\u4f7f\u7528SQL Server\u7684row_number() over()\u51fd\u6578\u81ea\u52d5\u751f\u6210\u884c\u865f\uff0c\u63d0\u5347\u6578\u64da\u67e5\u8a62\u548c\u5831\u544a\u7684\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-139221","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/139221","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=139221"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/139221\/revisions"}],"predecessor-version":[{"id":139222,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/139221\/revisions\/139222"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=139221"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=139221"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=139221"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}