{"id":163191,"date":"2024-11-04T21:26:21","date_gmt":"2024-11-04T13:26:21","guid":{"rendered":"https:\/\/server.hk\/cnblog\/163191\/"},"modified":"2024-11-04T21:26:22","modified_gmt":"2024-11-04T13:26:22","slug":"sql-server-%e4%b8%ad%e6%a8%99%e6%ba%96%e5%b7%ae%e8%a8%88%e7%ae%97%e5%8f%8a%e6%87%89%e7%94%a8%ef%bc%88sqlserver-%e6%a8%99%e6%ba%96%e5%b7%ae%ef%bc%89","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/163191\/","title":{"rendered":"SQL Server \u4e2d\u6a19\u6e96\u5dee\u8a08\u7b97\u53ca\u61c9\u7528\uff08sqlserver \u6a19\u6e96\u5dee\uff09"},"content":{"rendered":"<h1 id=\"sql-server-%e4%b8%ad%e6%a8%99%e6%ba%96%e5%b7%ae%e8%a8%88%e7%ae%97%e5%8f%8a%e6%87%89%e7%94%a8%ef%bc%88sqlserver-%e6%a8%99%e6%ba%96%e5%b7%ae%ef%bc%89-kUldizfskS\">SQL Server \u4e2d\u6a19\u6e96\u5dee\u8a08\u7b97\u53ca\u61c9\u7528\uff08sqlserver \u6a19\u6e96\u5dee\uff09<\/h1>\n<p>\u5728\u6578\u64da\u5206\u6790\u548c\u7d71\u8a08\u5b78\u4e2d\uff0c\u6a19\u6e96\u5dee\u662f\u4e00\u500b\u91cd\u8981\u7684\u6307\u6a19\uff0c\u7528\u65bc\u8861\u91cf\u6578\u64da\u96c6\u7684\u8b8a\u7570\u7a0b\u5ea6\u3002SQL Server \u63d0\u4f9b\u4e86\u591a\u7a2e\u65b9\u6cd5\u4f86\u8a08\u7b97\u6a19\u6e96\u5dee\uff0c\u9019\u4e9b\u65b9\u6cd5\u53ef\u4ee5\u5e6b\u52a9\u7528\u6236\u66f4\u597d\u5730\u7406\u89e3\u6578\u64da\u7684\u5206\u4f48\u60c5\u6cc1\u3002\u672c\u6587\u5c07\u6df1\u5165\u63a2\u8a0e SQL Server \u4e2d\u6a19\u6e96\u5dee\u7684\u8a08\u7b97\u65b9\u6cd5\u53ca\u5176\u61c9\u7528\u3002<\/p>\n<h2 id=\"%e6%a8%99%e6%ba%96%e5%b7%ae%e7%9a%84%e5%ae%9a%e7%be%a9-kUldizfskS\">\u6a19\u6e96\u5dee\u7684\u5b9a\u7fa9<\/h2>\n<p>\u6a19\u6e96\u5dee\u662f\u6578\u64da\u96c6\u4e2d\u7684\u6bcf\u500b\u6578\u64da\u9ede\u8207\u5176\u5e73\u5747\u503c\u4e4b\u9593\u7684\u8ddd\u96e2\u7684\u5e73\u65b9\u6839\u3002\u5b83\u53cd\u6620\u4e86\u6578\u64da\u7684\u96e2\u6563\u7a0b\u5ea6\uff0c\u6a19\u6e96\u5dee\u8d8a\u5927\uff0c\u6578\u64da\u7684\u8b8a\u7570\u6027\u8d8a\u9ad8\uff1b\u53cd\u4e4b\uff0c\u6a19\u6e96\u5dee\u8d8a\u5c0f\uff0c\u6578\u64da\u8d8a\u96c6\u4e2d\u3002<\/p>\n<h2 id=\"sql-server-%e4%b8%ad%e7%9a%84%e6%a8%99%e6%ba%96%e5%b7%ae%e8%a8%88%e7%ae%97-kUldizfskS\">SQL Server \u4e2d\u7684\u6a19\u6e96\u5dee\u8a08\u7b97<\/h2>\n<p>\u5728 SQL Server \u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528\u5167\u5efa\u7684\u805a\u5408\u51fd\u6578\u4f86\u8a08\u7b97\u6a19\u6e96\u5dee\u3002\u4e3b\u8981\u6709\u5169\u500b\u51fd\u6578\uff1a<\/p>\n<ul>\n<li><code>STDEV<\/code>\uff1a\u8a08\u7b97\u6a23\u672c\u6a19\u6e96\u5dee\u3002<\/li>\n<li><code>STDEVP<\/code>\uff1a\u8a08\u7b97\u6574\u9ad4\u6a19\u6e96\u5dee\u3002<\/li>\n<\/ul>\n<h3 id=\"%e4%bd%bf%e7%94%a8-stdev-%e5%87%bd%e6%95%b8-kUldizfskS\">\u4f7f\u7528 STDEV \u51fd\u6578<\/h3>\n<p>\u7576\u6211\u5011\u9700\u8981\u8a08\u7b97\u4e00\u7d44\u6578\u64da\u7684\u6a23\u672c\u6a19\u6e96\u5dee\u6642\uff0c\u53ef\u4ee5\u4f7f\u7528 <code>STDEV<\/code> \u51fd\u6578\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u793a\u4f8b\uff1a<\/p>\n<pre><code>SELECT STDEV(column_name) AS SampleStandardDeviation\nFROM table_name;<\/code><\/pre>\n<p>\u5728\u9019\u500b\u67e5\u8a62\u4e2d\uff0c<code>column_name<\/code> \u662f\u6211\u5011\u8981\u8a08\u7b97\u6a19\u6e96\u5dee\u7684\u5217\u540d\uff0c\u800c <code>table_name<\/code> \u662f\u6578\u64da\u8868\u7684\u540d\u7a31\u3002<\/p>\n<h3 id=\"%e4%bd%bf%e7%94%a8-stdevp-%e5%87%bd%e6%95%b8-kUldizfskS\">\u4f7f\u7528 STDEVP \u51fd\u6578<\/h3>\n<p>\u5982\u679c\u6211\u5011\u9700\u8981\u8a08\u7b97\u6574\u9ad4\u6a19\u6e96\u5dee\uff0c\u53ef\u4ee5\u4f7f\u7528 <code>STDEVP<\/code> \u51fd\u6578\u3002\u793a\u4f8b\u5982\u4e0b\uff1a<\/p>\n<pre><code>SELECT STDEVP(column_name) AS PopulationStandardDeviation\nFROM table_name;<\/code><\/pre>\n<p>\u9019\u88e1\u7684\u7528\u6cd5\u8207 <code>STDEV<\/code> \u51fd\u6578\u985e\u4f3c\uff0c\u4f46 <code>STDEVP<\/code> \u7528\u65bc\u8a08\u7b97\u6574\u9ad4\u6a19\u6e96\u5dee\uff0c\u9069\u7528\u65bc\u6574\u500b\u6578\u64da\u96c6\u3002<\/p>\n<h2 id=\"%e6%a8%99%e6%ba%96%e5%b7%ae%e7%9a%84%e6%87%89%e7%94%a8-kUldizfskS\">\u6a19\u6e96\u5dee\u7684\u61c9\u7528<\/h2>\n<p>\u6a19\u6e96\u5dee\u5728\u6578\u64da\u5206\u6790\u4e2d\u6709\u591a\u7a2e\u61c9\u7528\uff0c\u4ee5\u4e0b\u662f\u5e7e\u500b\u5e38\u898b\u7684\u4f8b\u5b50\uff1a<\/p>\n<ul>\n<li><strong>\u98a8\u96aa\u8a55\u4f30\uff1a<\/strong>\u5728\u91d1\u878d\u9818\u57df\uff0c\u6a19\u6e96\u5dee\u5e38\u7528\u65bc\u8a55\u4f30\u6295\u8cc7\u7684\u98a8\u96aa\u3002\u9ad8\u6a19\u6e96\u5dee\u610f\u5473\u8457\u6295\u8cc7\u56de\u5831\u7684\u4e0d\u78ba\u5b9a\u6027\u8f03\u9ad8\u3002<\/li>\n<li><strong>\u8cea\u91cf\u63a7\u5236\uff1a<\/strong>\u5728\u88fd\u9020\u696d\u4e2d\uff0c\u6a19\u6e96\u5dee\u7528\u65bc\u76e3\u63a7\u7522\u54c1\u8cea\u91cf\uff0c\u78ba\u4fdd\u7522\u54c1\u7684\u4e00\u81f4\u6027\u3002<\/li>\n<li><strong>\u6578\u64da\u5206\u6790\uff1a<\/strong>\u5728\u6578\u64da\u79d1\u5b78\u4e2d\uff0c\u6a19\u6e96\u5dee\u5e6b\u52a9\u5206\u6790\u6578\u64da\u7684\u5206\u4f48\uff0c\u8b58\u5225\u7570\u5e38\u503c\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b5%90%e8%ab%96-kUldizfskS\">\u7d50\u8ad6<\/h2>\n<p>\u6a19\u6e96\u5dee\u662f\u6578\u64da\u5206\u6790\u4e2d\u4e0d\u53ef\u6216\u7f3a\u7684\u5de5\u5177\uff0cSQL Server \u63d0\u4f9b\u4e86\u7c21\u55ae\u6613\u7528\u7684\u51fd\u6578\u4f86\u8a08\u7b97\u6a19\u6e96\u5dee\uff0c\u5e6b\u52a9\u7528\u6236\u6df1\u5165\u7406\u89e3\u6578\u64da\u7684\u8b8a\u7570\u6027\u3002\u7121\u8ad6\u662f\u5728\u91d1\u878d\u3001\u88fd\u9020\u9084\u662f\u6578\u64da\u79d1\u5b78\u9818\u57df\uff0c\u6a19\u6e96\u5dee\u7684\u61c9\u7528\u90fd\u80fd\u63d0\u4f9b\u91cd\u8981\u7684\u898b\u89e3\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\uff0cServer.HK \u63d0\u4f9b\u591a\u7a2e\u9078\u64c7\uff0c\u6eff\u8db3\u4e0d\u540c\u7528\u6236\u7684\u9700\u6c42\u3002\u7121\u8ad6\u662f\u6578\u64da\u5206\u6790\u9084\u662f\u5176\u4ed6\u61c9\u7528\uff0c\u6211\u5011\u7684 <a href=\"https:\/\/server.hk\">\u9999\u6e2f\u4f3a\u670d\u5668<\/a> \u90fd\u80fd\u70ba\u60a8\u63d0\u4f9b\u7a69\u5b9a\u7684\u652f\u6301\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u63a2\u7d22 SQL Server \u4e2d\u6a19\u6e96\u5dee\u7684\u8a08\u7b97\u65b9\u6cd5\u53ca\u5176\u61c9\u7528\uff0c\u63d0\u5347\u6578\u64da\u5206\u6790\u80fd\u529b\uff0c\u7cbe\u78ba\u8a55\u4f30\u6578\u64da\u96c6\u7684\u8b8a\u7570\u6027\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-163191","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/163191","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=163191"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/163191\/revisions"}],"predecessor-version":[{"id":163192,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/163191\/revisions\/163192"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=163191"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=163191"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=163191"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}