{"id":66305,"date":"2024-10-14T16:20:16","date_gmt":"2024-10-14T08:20:16","guid":{"rendered":"https:\/\/server.hk\/cnblog\/66305\/"},"modified":"2024-10-14T16:20:16","modified_gmt":"2024-10-14T08:20:16","slug":"mssql%e4%b8%ad%e5%bf%85%e9%a0%88%e8%81%b2%e6%98%8e%e8%ae%8a%e9%87%8f%e7%9a%84%e5%81%9a%e6%b3%95%ef%bc%88mssql%e5%bf%85%e9%a0%88%e8%81%b2%e6%98%8e%e8%ae%8a%e9%87%8f%ef%bc%89","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/66305\/","title":{"rendered":"MSSQL\u4e2d\u5fc5\u9808\u8072\u660e\u8b8a\u91cf\u7684\u505a\u6cd5\uff08mssql\u5fc5\u9808\u8072\u660e\u8b8a\u91cf\uff09"},"content":{"rendered":"<h1 id=\"mssql%e4%b8%ad%e5%bf%85%e9%a0%88%e8%81%b2%e6%98%8e%e8%ae%8a%e9%87%8f%e7%9a%84%e5%81%9a%e6%b3%95-jKIDxccDeq\">MSSQL\u4e2d\u5fc5\u9808\u8072\u660e\u8b8a\u91cf\u7684\u505a\u6cd5<\/h1>\n<p>\u5728\u4f7f\u7528Microsoft SQL Server\uff08MSSQL\uff09\u9032\u884c\u6578\u64da\u5eab\u958b\u767c\u6642\uff0c\u8b8a\u91cf\u7684\u8072\u660e\u662f\u4e00\u500b\u91cd\u8981\u7684\u6b65\u9a5f\u3002\u8b8a\u91cf\u5728SQL\u67e5\u8a62\u4e2d\u7528\u65bc\u5b58\u5132\u81e8\u6642\u6578\u64da\uff0c\u4e26\u5728\u67e5\u8a62\u57f7\u884c\u904e\u7a0b\u4e2d\u9032\u884c\u64cd\u4f5c\u3002\u672c\u6587\u5c07\u6df1\u5165\u63a2\u8a0eMSSQL\u4e2d\u8b8a\u91cf\u8072\u660e\u7684\u5fc5\u8981\u6027\u53ca\u5176\u4f7f\u7528\u65b9\u6cd5\u3002<\/p>\n<h2 id=\"%e8%ae%8a%e9%87%8f%e7%9a%84%e5%9f%ba%e6%9c%ac%e6%a6%82%e5%bf%b5-jKIDxccDeq\">\u8b8a\u91cf\u7684\u57fa\u672c\u6982\u5ff5<\/h2>\n<p>\u5728MSSQL\u4e2d\uff0c\u8b8a\u91cf\u662f\u4e00\u7a2e\u7528\u65bc\u5b58\u5132\u6578\u64da\u7684\u547d\u540d\u5167\u5b58\u4f4d\u7f6e\u3002\u8b8a\u91cf\u53ef\u4ee5\u7528\u4f86\u4fdd\u5b58\u67e5\u8a62\u7d50\u679c\u3001\u8a08\u7b97\u503c\u6216\u5176\u4ed6\u81e8\u6642\u6578\u64da\u3002\u8b8a\u91cf\u7684\u4f7f\u7528\u53ef\u4ee5\u63d0\u9ad8\u67e5\u8a62\u7684\u9748\u6d3b\u6027\u548c\u53ef\u8b80\u6027\u3002<\/p>\n<h2 id=\"%e7%82%ba%e4%bb%80%e9%ba%bc%e5%bf%85%e9%a0%88%e8%81%b2%e6%98%8e%e8%ae%8a%e9%87%8f-jKIDxccDeq\">\u70ba\u4ec0\u9ebc\u5fc5\u9808\u8072\u660e\u8b8a\u91cf<\/h2>\n<p>\u5728MSSQL\u4e2d\uff0c\u6240\u6709\u8b8a\u91cf\u90fd\u5fc5\u9808\u5728\u4f7f\u7528\u4e4b\u524d\u9032\u884c\u8072\u660e\u3002\u9019\u662f\u56e0\u70baSQL Server\u9700\u8981\u77e5\u9053\u8b8a\u91cf\u7684\u6578\u64da\u985e\u578b\u548c\u7bc4\u570d\u3002\u672a\u8072\u660e\u8b8a\u91cf\u7684\u4f7f\u7528\u6703\u5c0e\u81f4\u932f\u8aa4\uff0c\u4e26\u4e14\u6703\u5f71\u97ff\u67e5\u8a62\u7684\u57f7\u884c\u3002\u4ee5\u4e0b\u662f\u5e7e\u500b\u4e3b\u8981\u539f\u56e0\uff1a<\/p>\n<ul>\n<li><strong>\u6578\u64da\u985e\u578b\u7684\u660e\u78ba\u6027\uff1a<\/strong>\u8072\u660e\u8b8a\u91cf\u6642\uff0c\u5fc5\u9808\u6307\u5b9a\u5176\u6578\u64da\u985e\u578b\uff0c\u9019\u6709\u52a9\u65bcSQL Server\u9032\u884c\u985e\u578b\u6aa2\u67e5\uff0c\u5f9e\u800c\u907f\u514d\u985e\u578b\u4e0d\u5339\u914d\u7684\u932f\u8aa4\u3002<\/li>\n<li><strong>\u7bc4\u570d\u63a7\u5236\uff1a<\/strong>\u8b8a\u91cf\u7684\u7bc4\u570d\u50c5\u9650\u65bc\u5176\u8072\u660e\u7684\u6279\u6b21\u6216\u5b58\u5132\u904e\u7a0b\u5167\uff0c\u9019\u6709\u52a9\u65bc\u7ba1\u7406\u5167\u5b58\u548c\u8cc7\u6e90\u3002<\/li>\n<li><strong>\u63d0\u9ad8\u53ef\u8b80\u6027\uff1a<\/strong>\u660e\u78ba\u7684\u8b8a\u91cf\u8072\u660e\u4f7f\u5f97\u4ee3\u78bc\u66f4\u6613\u65bc\u7406\u89e3\u548c\u7dad\u8b77\u3002<\/li>\n<\/ul>\n<h2 id=\"%e5%a6%82%e4%bd%95%e8%81%b2%e6%98%8e%e8%ae%8a%e9%87%8f-jKIDxccDeq\">\u5982\u4f55\u8072\u660e\u8b8a\u91cf<\/h2>\n<p>\u5728MSSQL\u4e2d\uff0c\u8b8a\u91cf\u7684\u8072\u660e\u4f7f\u7528 <code>DECLARE<\/code> \u8a9e\u53e5\u3002\u4ee5\u4e0b\u662f\u8b8a\u91cf\u8072\u660e\u7684\u57fa\u672c\u8a9e\u6cd5\uff1a<\/p>\n<pre><code>DECLARE @VariableName DataType;<\/code><\/pre>\n<p>\u4f8b\u5982\uff0c\u5982\u679c\u8981\u8072\u660e\u4e00\u500b\u6574\u6578\u8b8a\u91cf\uff0c\u53ef\u4ee5\u9019\u6a23\u5beb\uff1a<\/p>\n<pre><code>DECLARE @Count INT;<\/code><\/pre>\n<p>\u8072\u660e\u5f8c\uff0c\u53ef\u4ee5\u4f7f\u7528 <code>SET<\/code> \u8a9e\u53e5\u70ba\u8b8a\u91cf\u8ce6\u503c\uff1a<\/p>\n<pre><code>SET @Count = 10;<\/code><\/pre>\n<h2 id=\"%e8%ae%8a%e9%87%8f%e7%9a%84%e4%bd%bf%e7%94%a8%e7%a4%ba%e4%be%8b-jKIDxccDeq\">\u8b8a\u91cf\u7684\u4f7f\u7528\u793a\u4f8b<\/h2>\n<p>\u4ee5\u4e0b\u662f\u4e00\u500b\u7c21\u55ae\u7684\u793a\u4f8b\uff0c\u5c55\u793a\u5982\u4f55\u5728\u67e5\u8a62\u4e2d\u4f7f\u7528\u8b8a\u91cf\uff1a<\/p>\n<pre><code>DECLARE @TotalSales DECIMAL(10, 2);\nSELECT @TotalSales = SUM(SalesAmount) FROM Sales WHERE SaleDate = '2023-01-01';\nPRINT 'Total Sales on 2023-01-01: ' + CAST(@TotalSales AS VARCHAR(10));<\/code><\/pre>\n<p>\u5728\u9019\u500b\u793a\u4f8b\u4e2d\uff0c\u6211\u5011\u9996\u5148\u8072\u660e\u4e86\u4e00\u500b\u540d\u70ba <code>@TotalSales<\/code> \u7684\u8b8a\u91cf\uff0c\u7136\u5f8c\u4f7f\u7528 <code>SELECT<\/code> \u8a9e\u53e5\u8a08\u7b97\u7279\u5b9a\u65e5\u671f\u7684\u7e3d\u92b7\u552e\u984d\uff0c\u6700\u5f8c\u4f7f\u7528 <code>PRINT<\/code> \u8a9e\u53e5\u8f38\u51fa\u7d50\u679c\u3002<\/p>\n<h2 id=\"%e7%b5%90%e8%ab%96-jKIDxccDeq\">\u7d50\u8ad6<\/h2>\n<p>\u5728MSSQL\u4e2d\uff0c\u8b8a\u91cf\u7684\u8072\u660e\u662f\u5fc5\u4e0d\u53ef\u5c11\u7684\u6b65\u9a5f\u3002\u901a\u904e\u6b63\u78ba\u5730\u8072\u660e\u548c\u4f7f\u7528\u8b8a\u91cf\uff0c\u958b\u767c\u8005\u53ef\u4ee5\u63d0\u9ad8\u67e5\u8a62\u7684\u9748\u6d3b\u6027\u548c\u53ef\u8b80\u6027\uff0c\u4e26\u6709\u6548\u5730\u7ba1\u7406\u6578\u64da\u985e\u578b\u548c\u7bc4\u570d\u3002\u7121\u8ad6\u662f\u5728\u7c21\u55ae\u7684\u67e5\u8a62\u9084\u662f\u8907\u96dc\u7684\u5b58\u5132\u904e\u7a0b\u4e2d\uff0c\u8b8a\u91cf\u7684\u4f7f\u7528\u90fd\u80fd\u986f\u8457\u63d0\u5347\u4ee3\u78bc\u7684\u8cea\u91cf\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\u4ee5\u6eff\u8db3\u60a8\u7684\u9700\u6c42\u3002\u7121\u8ad6\u662f\u6578\u64da\u5eab\u7ba1\u7406\u9084\u662f\u61c9\u7528\u7a0b\u5e8f\u90e8\u7f72\uff0c\u6211\u5011\u7684\u670d\u52d9\u90fd\u80fd\u70ba\u60a8\u63d0\u4f9b\u7a69\u5b9a\u7684\u652f\u6301\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4e86\u89e3MSSQL\u4e2d\u8b8a\u91cf\u8072\u660e\u7684\u5fc5\u8981\u6027\uff0c\u638c\u63e1\u6b63\u78ba\u7684\u8b8a\u91cf\u4f7f\u7528\u65b9\u6cd5\uff0c\u63d0\u9ad8\u6578\u64da\u5eab\u64cd\u4f5c\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-66305","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/66305","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=66305"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/66305\/revisions"}],"predecessor-version":[{"id":66306,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/66305\/revisions\/66306"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=66305"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=66305"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=66305"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}