{"id":183824,"date":"2024-11-10T08:02:28","date_gmt":"2024-11-10T00:02:28","guid":{"rendered":"https:\/\/server.hk\/cnblog\/183824\/"},"modified":"2024-11-10T08:02:29","modified_gmt":"2024-11-10T00:02:29","slug":"%e4%bd%bf%e7%94%a8mssql%e5%88%86%e9%a1%9e%e7%b5%b1%e8%a8%88%e7%9a%84%e6%9c%80%e4%bd%b3%e5%af%a6%e8%b8%90%ef%bc%88mssql%e5%88%86%e9%a1%9e%e7%b5%b1%e8%a8%88%e5%91%bd%e4%bb%a4%e8%a1%8c%ef%bc%89","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/183824\/","title":{"rendered":"\u4f7f\u7528MSSQL\u5206\u985e\u7d71\u8a08\u7684\u6700\u4f73\u5be6\u8e10\uff08mssql\u5206\u985e\u7d71\u8a08\u547d\u4ee4\u884c\uff09"},"content":{"rendered":"<h1 id=\"%e4%bd%bf%e7%94%a8mssql%e5%88%86%e9%a1%9e%e7%b5%b1%e8%a8%88%e7%9a%84%e6%9c%80%e4%bd%b3%e5%af%a6%e8%b8%90%ef%bc%88mssql%e5%88%86%e9%a1%9e%e7%b5%b1%e8%a8%88%e5%91%bd%e4%bb%a4%e8%a1%8c%ef%bc%89-mavILQVvhO\">\u4f7f\u7528MSSQL\u5206\u985e\u7d71\u8a08\u7684\u6700\u4f73\u5be6\u8e10\uff08mssql\u5206\u985e\u7d71\u8a08\u547d\u4ee4\u884c\uff09<\/h1>\n<p>\u5728\u6578\u64da\u5eab\u7ba1\u7406\u4e2d\uff0cMSSQL\uff08Microsoft SQL Server\uff09\u662f\u4e00\u500b\u5ee3\u6cdb\u4f7f\u7528\u7684\u95dc\u806f\u6578\u64da\u5eab\u7ba1\u7406\u7cfb\u7d71\u3002\u5b83\u63d0\u4f9b\u4e86\u5f37\u5927\u7684\u6578\u64da\u8655\u7406\u80fd\u529b\uff0c\u7279\u5225\u662f\u5728\u9032\u884c\u5206\u985e\u7d71\u8a08\u6642\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u4f7f\u7528MSSQL\u9032\u884c\u5206\u985e\u7d71\u8a08\u7684\u6700\u4f73\u5be6\u8e10\uff0c\u4e26\u63d0\u4f9b\u4e00\u4e9b\u547d\u4ee4\u884c\u793a\u4f8b\uff0c\u5e6b\u52a9\u7528\u6236\u66f4\u6709\u6548\u5730\u5229\u7528\u9019\u4e00\u5de5\u5177\u3002<\/p>\n<h2 id=\"%e4%bb%80%e9%ba%bc%e6%98%af%e5%88%86%e9%a1%9e%e7%b5%b1%e8%a8%88%ef%bc%9f-mavILQVvhO\">\u4ec0\u9ebc\u662f\u5206\u985e\u7d71\u8a08\uff1f<\/h2>\n<p>\u5206\u985e\u7d71\u8a08\u662f\u6307\u5c0d\u6578\u64da\u9032\u884c\u5206\u7d44\u548c\u7d71\u8a08\u5206\u6790\u7684\u904e\u7a0b\u3002\u9019\u7a2e\u65b9\u6cd5\u53ef\u4ee5\u5e6b\u52a9\u7528\u6236\u5f9e\u5927\u91cf\u6578\u64da\u4e2d\u63d0\u53d6\u6709\u7528\u7684\u4fe1\u606f\uff0c\u4e26\u9032\u884c\u6df1\u5165\u7684\u6578\u64da\u5206\u6790\u3002MSSQL\u63d0\u4f9b\u4e86\u591a\u7a2e\u529f\u80fd\u4f86\u652f\u6301\u5206\u985e\u7d71\u8a08\uff0c\u5305\u62ec\u805a\u5408\u51fd\u6578\u3001GROUP BY\u8a9e\u53e5\u548c\u7a97\u53e3\u51fd\u6578\u7b49\u3002<\/p>\n<h2 id=\"mssql%e4%b8%ad%e7%9a%84%e5%88%86%e9%a1%9e%e7%b5%b1%e8%a8%88%e5%91%bd%e4%bb%a4-mavILQVvhO\">MSSQL\u4e2d\u7684\u5206\u985e\u7d71\u8a08\u547d\u4ee4<\/h2>\n<p>\u5728MSSQL\u4e2d\uff0c\u9032\u884c\u5206\u985e\u7d71\u8a08\u7684\u57fa\u672c\u547d\u4ee4\u5305\u62ec\uff1a<\/p>\n<ul>\n<li><code>SELECT<\/code>\uff1a\u7528\u65bc\u9078\u64c7\u6578\u64da\u3002<\/li>\n<li><code>GROUP BY<\/code>\uff1a\u7528\u65bc\u5c07\u7d50\u679c\u96c6\u6309\u4e00\u500b\u6216\u591a\u500b\u5217\u9032\u884c\u5206\u7d44\u3002<\/li>\n<li><code>HAVING<\/code>\uff1a\u7528\u65bc\u5c0d\u5206\u7d44\u5f8c\u7684\u7d50\u679c\u9032\u884c\u904e\u6ffe\u3002<\/li>\n<li><code>COUNT()<\/code>\u3001<code>SUM()<\/code>\u3001<code>AVG()<\/code>\u7b49\u805a\u5408\u51fd\u6578\uff1a\u7528\u65bc\u8a08\u7b97\u5206\u7d44\u6578\u64da\u7684\u7d71\u8a08\u4fe1\u606f\u3002<\/li>\n<\/ul>\n<h2 id=\"%e6%9c%80%e4%bd%b3%e5%af%a6%e8%b8%90-mavILQVvhO\">\u6700\u4f73\u5be6\u8e10<\/h2>\n<h3 id=\"1-%e4%bd%bf%e7%94%a8%e9%81%a9%e7%95%b6%e7%9a%84%e8%81%9a%e5%90%88%e5%87%bd%e6%95%b8-mavILQVvhO\">1. \u4f7f\u7528\u9069\u7576\u7684\u805a\u5408\u51fd\u6578<\/h3>\n<p>\u5728\u9032\u884c\u5206\u985e\u7d71\u8a08\u6642\uff0c\u9078\u64c7\u5408\u9069\u7684\u805a\u5408\u51fd\u6578\u81f3\u95dc\u91cd\u8981\u3002\u4f8b\u5982\uff0c\u82e5\u8981\u8a08\u7b97\u6bcf\u500b\u985e\u5225\u7684\u7e3d\u92b7\u552e\u984d\uff0c\u53ef\u4ee5\u4f7f\u7528<code>SUM()<\/code>\u51fd\u6578\uff1b\u82e5\u8981\u8a08\u7b97\u6bcf\u500b\u985e\u5225\u7684\u9805\u76ee\u6578\u91cf\uff0c\u53ef\u4ee5\u4f7f\u7528<code>COUNT()<\/code>\u51fd\u6578\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u793a\u4f8b\uff1a<\/p>\n<pre><code>SELECT Category, SUM(Sales) AS TotalSales\nFROM SalesData\nGROUP BY Category;<\/code><\/pre>\n<h3 id=\"2-%e4%bd%bf%e7%94%a8having%e9%81%8e%e6%bf%be%e7%b5%90%e6%9e%9c-mavILQVvhO\">2. \u4f7f\u7528HAVING\u904e\u6ffe\u7d50\u679c<\/h3>\n<p>\u5728\u67d0\u4e9b\u60c5\u6cc1\u4e0b\uff0c\u60a8\u53ef\u80fd\u53ea\u60f3\u67e5\u770b\u7b26\u5408\u7279\u5b9a\u689d\u4ef6\u7684\u5206\u7d44\u7d50\u679c\u3002\u9019\u6642\u53ef\u4ee5\u4f7f\u7528<code>HAVING<\/code>\u5b50\u53e5\u4f86\u904e\u6ffe\u7d50\u679c\u3002\u4f8b\u5982\uff0c\u82e5\u8981\u67e5\u8a62\u92b7\u552e\u984d\u8d85\u904e1000\u7684\u985e\u5225\uff0c\u53ef\u4ee5\u9019\u6a23\u5beb\uff1a<\/p>\n<pre><code>SELECT Category, SUM(Sales) AS TotalSales\nFROM SalesData\nGROUP BY Category\nHAVING SUM(Sales) &gt; 1000;<\/code><\/pre>\n<h3 id=\"3-%e5%88%a9%e7%94%a8%e7%aa%97%e5%8f%a3%e5%87%bd%e6%95%b8%e9%80%b2%e8%a1%8c%e6%9b%b4%e6%b7%b1%e5%85%a5%e7%9a%84%e5%88%86%e6%9e%90-mavILQVvhO\">3. \u5229\u7528\u7a97\u53e3\u51fd\u6578\u9032\u884c\u66f4\u6df1\u5165\u7684\u5206\u6790<\/h3>\n<p>MSSQL\u7684\u7a97\u53e3\u51fd\u6578\u5141\u8a31\u7528\u6236\u5728\u4e0d\u6539\u8b8a\u7d50\u679c\u96c6\u7684\u60c5\u6cc1\u4e0b\u9032\u884c\u66f4\u8907\u96dc\u7684\u8a08\u7b97\u3002\u4f8b\u5982\uff0c\u60a8\u53ef\u4ee5\u4f7f\u7528<code>ROW_NUMBER()<\/code>\u4f86\u70ba\u6bcf\u500b\u985e\u5225\u5206\u914d\u4e00\u500b\u6392\u540d\uff1a<\/p>\n<pre><code>SELECT Category, Sales, \n       ROW_NUMBER() OVER (PARTITION BY Category ORDER BY Sales DESC) AS Rank\nFROM SalesData;<\/code><\/pre>\n<h3 id=\"4-%e5%84%aa%e5%8c%96%e6%9f%a5%e8%a9%a2%e6%80%a7%e8%83%bd-mavILQVvhO\">4. \u512a\u5316\u67e5\u8a62\u6027\u80fd<\/h3>\n<p>\u5728\u8655\u7406\u5927\u91cf\u6578\u64da\u6642\uff0c\u67e5\u8a62\u6027\u80fd\u53ef\u80fd\u6703\u6210\u70ba\u4e00\u500b\u554f\u984c\u3002\u70ba\u4e86\u63d0\u9ad8\u67e5\u8a62\u6548\u7387\uff0c\u53ef\u4ee5\u8003\u616e\u4ee5\u4e0b\u5e7e\u9ede\uff1a<\/p>\n<ul>\n<li>\u78ba\u4fdd\u76f8\u95dc\u5217\u4e0a\u6709\u7d22\u5f15\uff0c\u4ee5\u52a0\u5feb\u67e5\u8a62\u901f\u5ea6\u3002<\/li>\n<li>\u907f\u514d\u5728<code>WHERE<\/code>\u548c<code>HAVING<\/code>\u5b50\u53e5\u4e2d\u4f7f\u7528\u4e0d\u5fc5\u8981\u7684\u8a08\u7b97\u3002<\/li>\n<li>\u5b9a\u671f\u66f4\u65b0\u7d71\u8a08\u4fe1\u606f\uff0c\u4ee5\u5e6b\u52a9\u67e5\u8a62\u512a\u5316\u5668\u505a\u51fa\u66f4\u597d\u7684\u6c7a\u7b56\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b8%bd%e7%b5%90-mavILQVvhO\">\u7e3d\u7d50<\/h2>\n<p>\u4f7f\u7528MSSQL\u9032\u884c\u5206\u985e\u7d71\u8a08\u662f\u4e00\u500b\u5f37\u5927\u7684\u6578\u64da\u5206\u6790\u5de5\u5177\uff0c\u901a\u904e\u9069\u7576\u7684\u547d\u4ee4\u548c\u6700\u4f73\u5be6\u8e10\uff0c\u60a8\u53ef\u4ee5\u6709\u6548\u5730\u5f9e\u6578\u64da\u4e2d\u63d0\u53d6\u6709\u50f9\u503c\u7684\u4fe1\u606f\u3002\u7121\u8ad6\u662f\u4f7f\u7528\u805a\u5408\u51fd\u6578\u3001\u904e\u6ffe\u7d50\u679c\u9084\u662f\u5229\u7528\u7a97\u53e3\u51fd\u6578\uff0c\u9019\u4e9b\u6280\u8853\u90fd\u80fd\u5e6b\u52a9\u60a8\u66f4\u6df1\u5165\u5730\u7406\u89e3\u6578\u64da\u3002\u82e5\u60a8\u9700\u8981\u66f4\u9ad8\u6548\u7684\u6578\u64da\u8655\u7406\u548c\u5206\u6790\uff0c\u8003\u616e\u4f7f\u7528<a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a>\u6216<a href=\"https:\/\/server.hk\">\u4e91\u670d\u52a1\u5668<\/a>\u4f86\u63d0\u5347\u60a8\u7684\u6578\u64da\u5eab\u6027\u80fd\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u63a2\u7d22MSSQL\u5206\u985e\u7d71\u8a08\u7684\u6700\u4f73\u5be6\u8e10\uff0c\u5b78\u7fd2\u5982\u4f55\u6709\u6548\u4f7f\u7528\u547d\u4ee4\u884c\u9032\u884c\u6578\u64da\u5206\u6790\u548c\u512a\u5316\u67e5\u8a62\u6027\u80fd\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-183824","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/183824","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=183824"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/183824\/revisions"}],"predecessor-version":[{"id":183825,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/183824\/revisions\/183825"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=183824"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=183824"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=183824"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}