{"id":196305,"date":"2024-11-13T22:08:24","date_gmt":"2024-11-13T14:08:24","guid":{"rendered":"https:\/\/server.hk\/cnblog\/196305\/"},"modified":"2024-11-13T22:08:26","modified_gmt":"2024-11-13T14:08:26","slug":"%e6%ad%a3%e7%a2%ba%e5%88%86%e6%9e%90ms-sql-server%e5%87%bd%e6%95%b8%e7%9a%842%e7%a8%ae%e7%94%a8%e6%b3%95","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/196305\/","title":{"rendered":"\u6b63\u78ba\u5206\u6790MS SQL Server\u51fd\u6578\u76842\u7a2e\u7528\u6cd5"},"content":{"rendered":"<h1 id=\"%e6%ad%a3%e7%a2%ba%e5%88%86%e6%9e%90ms-sql-server%e5%87%bd%e6%95%b8%e7%9a%842%e7%a8%ae%e7%94%a8%e6%b3%95-zsYvKEiqZU\">\u6b63\u78ba\u5206\u6790MS SQL Server\u51fd\u6578\u76842\u7a2e\u7528\u6cd5<\/h1>\n<p>\u5728\u6578\u64da\u5eab\u7ba1\u7406\u7cfb\u7d71\u4e2d\uff0cMS SQL Server\u662f\u4e00\u500b\u5ee3\u6cdb\u4f7f\u7528\u7684\u95dc\u806f\u6578\u64da\u5eab\u7ba1\u7406\u7cfb\u7d71\u3002\u5b83\u63d0\u4f9b\u4e86\u591a\u7a2e\u529f\u80fd\u4f86\u8655\u7406\u548c\u5206\u6790\u6578\u64da\uff0c\u5176\u4e2d\u51fd\u6578\u7684\u4f7f\u7528\u662f\u975e\u5e38\u91cd\u8981\u7684\u4e00\u90e8\u5206\u3002\u672c\u6587\u5c07\u63a2\u8a0eMS SQL Server\u51fd\u6578\u7684\u5169\u7a2e\u4e3b\u8981\u7528\u6cd5\uff0c\u5e6b\u52a9\u8b80\u8005\u66f4\u597d\u5730\u7406\u89e3\u548c\u61c9\u7528\u9019\u4e9b\u51fd\u6578\u3002<\/p>\n<h2 id=\"%e4%b8%80%e3%80%81%e5%85%a7%e5%bb%ba%e5%87%bd%e6%95%b8%e7%9a%84%e4%bd%bf%e7%94%a8-zsYvKEiqZU\">\u4e00\u3001\u5167\u5efa\u51fd\u6578\u7684\u4f7f\u7528<\/h2>\n<p>MS SQL Server\u63d0\u4f9b\u4e86\u591a\u7a2e\u5167\u5efa\u51fd\u6578\uff0c\u9019\u4e9b\u51fd\u6578\u53ef\u4ee5\u7528\u4f86\u57f7\u884c\u5e38\u898b\u7684\u6578\u64da\u64cd\u4f5c\u3002\u5167\u5efa\u51fd\u6578\u53ef\u4ee5\u5206\u70ba\u6578\u5b78\u51fd\u6578\u3001\u5b57\u7b26\u4e32\u51fd\u6578\u3001\u65e5\u671f\u548c\u6642\u9593\u51fd\u6578\u7b49\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u5e38\u898b\u7684\u5167\u5efa\u51fd\u6578\u53ca\u5176\u7528\u6cd5\u793a\u4f8b\uff1a<\/p>\n<ul>\n<li><strong>\u6578\u5b78\u51fd\u6578\uff1a<\/strong>\u4f8b\u5982\uff0c<code>ABS()<\/code>\u51fd\u6578\u53ef\u4ee5\u8fd4\u56de\u4e00\u500b\u6578\u5b57\u7684\u7d55\u5c0d\u503c\u3002<\/li>\n<pre><code>SELECT ABS(-10) AS AbsoluteValue;<\/code><\/pre>\n<li><strong>\u5b57\u7b26\u4e32\u51fd\u6578\uff1a<\/strong>\u4f8b\u5982\uff0c<code>LEN()<\/code>\u51fd\u6578\u53ef\u4ee5\u8fd4\u56de\u5b57\u7b26\u4e32\u7684\u9577\u5ea6\u3002<\/li>\n<pre><code>SELECT LEN('Hello World') AS StringLength;<\/code><\/pre>\n<li><strong>\u65e5\u671f\u548c\u6642\u9593\u51fd\u6578\uff1a<\/strong>\u4f8b\u5982\uff0c<code>GETDATE()<\/code>\u51fd\u6578\u53ef\u4ee5\u8fd4\u56de\u7576\u524d\u7684\u65e5\u671f\u548c\u6642\u9593\u3002<\/li>\n<pre><code>SELECT GETDATE() AS CurrentDateTime;<\/code><\/pre>\n<\/ul>\n<p>\u9019\u4e9b\u5167\u5efa\u51fd\u6578\u7684\u4f7f\u7528\u53ef\u4ee5\u5927\u5927\u7c21\u5316\u6578\u64da\u8655\u7406\u7684\u904e\u7a0b\uff0c\u4e26\u63d0\u9ad8\u67e5\u8a62\u7684\u6548\u7387\u3002\u958b\u767c\u8005\u53ef\u4ee5\u6839\u64da\u5177\u9ad4\u9700\u6c42\u9078\u64c7\u5408\u9069\u7684\u51fd\u6578\u4f86\u9054\u6210\u76ee\u6a19\u3002<\/p>\n<h2 id=\"%e4%ba%8c%e3%80%81%e8%87%aa%e5%ae%9a%e7%be%a9%e5%87%bd%e6%95%b8%e7%9a%84%e5%89%b5%e5%bb%ba-zsYvKEiqZU\">\u4e8c\u3001\u81ea\u5b9a\u7fa9\u51fd\u6578\u7684\u5275\u5efa<\/h2>\n<p>\u9664\u4e86\u4f7f\u7528\u5167\u5efa\u51fd\u6578\u5916\uff0cMS SQL Server\u9084\u5141\u8a31\u7528\u6236\u5275\u5efa\u81ea\u5b9a\u7fa9\u51fd\u6578\u3002\u81ea\u5b9a\u7fa9\u51fd\u6578\u53ef\u4ee5\u6839\u64da\u7279\u5b9a\u7684\u696d\u52d9\u9700\u6c42\u4f86\u8a2d\u8a08\uff0c\u4e26\u4e14\u53ef\u4ee5\u5728\u591a\u500b\u67e5\u8a62\u4e2d\u91cd\u8907\u4f7f\u7528\u3002\u81ea\u5b9a\u7fa9\u51fd\u6578\u4e3b\u8981\u5206\u70ba\u6a19\u91cf\u51fd\u6578\u548c\u8868\u503c\u51fd\u6578\u5169\u7a2e\u3002<\/p>\n<h3 id=\"1-%e6%a8%99%e9%87%8f%e5%87%bd%e6%95%b8-zsYvKEiqZU\">1. \u6a19\u91cf\u51fd\u6578<\/h3>\n<p>\u6a19\u91cf\u51fd\u6578\u8fd4\u56de\u55ae\u4e00\u503c\uff0c\u901a\u5e38\u7528\u65bc\u8a08\u7b97\u6216\u8f49\u63db\u6578\u64da\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u5275\u5efa\u6a19\u91cf\u51fd\u6578\u7684\u793a\u4f8b\uff1a<\/p>\n<pre><code>CREATE FUNCTION dbo.GetFullName\n(\n    @FirstName NVARCHAR(50),\n    @LastName NVARCHAR(50)\n)\nRETURNS NVARCHAR(100)\nAS\nBEGIN\n    RETURN @FirstName + ' ' + @LastName;\nEND;<\/code><\/pre>\n<p>\u4f7f\u7528\u9019\u500b\u51fd\u6578\u7684\u67e5\u8a62\u793a\u4f8b\u5982\u4e0b\uff1a<\/p>\n<pre><code>SELECT dbo.GetFullName('John', 'Doe') AS FullName;<\/code><\/pre>\n<h3 id=\"2-%e8%a1%a8%e5%80%bc%e5%87%bd%e6%95%b8-zsYvKEiqZU\">2. \u8868\u503c\u51fd\u6578<\/h3>\n<p>\u8868\u503c\u51fd\u6578\u8fd4\u56de\u4e00\u500b\u8868\uff0c\u53ef\u4ee5\u7528\u65bc\u66f4\u8907\u96dc\u7684\u67e5\u8a62\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u5275\u5efa\u8868\u503c\u51fd\u6578\u7684\u793a\u4f8b\uff1a<\/p>\n<pre><code>CREATE FUNCTION dbo.GetEmployeesByDepartment\n(\n    @DepartmentID INT\n)\nRETURNS TABLE\nAS\nRETURN\n(\n    SELECT * FROM Employees WHERE DepartmentID = @DepartmentID\n);<\/code><\/pre>\n<p>\u4f7f\u7528\u9019\u500b\u8868\u503c\u51fd\u6578\u7684\u67e5\u8a62\u793a\u4f8b\u5982\u4e0b\uff1a<\/p>\n<pre><code>SELECT * FROM dbo.GetEmployeesByDepartment(1);<\/code><\/pre>\n<p>\u81ea\u5b9a\u7fa9\u51fd\u6578\u7684\u9748\u6d3b\u6027\u4f7f\u5f97\u958b\u767c\u8005\u80fd\u5920\u6839\u64da\u5177\u9ad4\u9700\u6c42\u9032\u884c\u64f4\u5c55\uff0c\u5f9e\u800c\u63d0\u9ad8\u6578\u64da\u8655\u7406\u7684\u6548\u7387\u548c\u53ef\u91cd\u7528\u6027\u3002<\/p>\n<h2 id=\"%e7%b8%bd%e7%b5%90-zsYvKEiqZU\">\u7e3d\u7d50<\/h2>\n<p>\u5728MS SQL Server\u4e2d\uff0c\u6b63\u78ba\u5206\u6790\u548c\u4f7f\u7528\u51fd\u6578\u662f\u6578\u64da\u8655\u7406\u7684\u91cd\u8981\u7d44\u6210\u90e8\u5206\u3002\u7121\u8ad6\u662f\u5167\u5efa\u51fd\u6578\u9084\u662f\u81ea\u5b9a\u7fa9\u51fd\u6578\uff0c\u90fd\u80fd\u5920\u5e6b\u52a9\u958b\u767c\u8005\u66f4\u9ad8\u6548\u5730\u8655\u7406\u6578\u64da\u3002\u900f\u904e\u672c\u6587\u7684\u4ecb\u7d39\uff0c\u5e0c\u671b\u8b80\u8005\u80fd\u5920\u66f4\u6df1\u5165\u5730\u7406\u89e3MS SQL Server\u51fd\u6578\u7684\u7528\u6cd5\uff0c\u4e26\u5728\u5be6\u969b\u61c9\u7528\u4e2d\u9748\u6d3b\u904b\u7528\u3002<\/p>\n<p>\u5982\u679c\u60a8\u5c0d\u65bcVPS\u3001<a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a>\u3001<a href=\"https:\/\/server.hk\">\u670d\u52a1\u5668<\/a>\u6216\u5176\u4ed6\u96f2\u8a08\u7b97\u89e3\u6c7a\u65b9\u6848\u6709\u8208\u8da3\uff0c\u6b61\u8fce\u8a2a\u554f\u6211\u5011\u7684\u7db2\u7ad9\u4ee5\u7372\u53d6\u66f4\u591a\u8cc7\u8a0a\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u63a2\u7d22MS SQL Server\u51fd\u6578\u7684\u5169\u7a2e\u4e3b\u8981\u7528\u6cd5\uff0c\u6df1\u5165\u4e86\u89e3\u5176\u6b63\u78ba\u5206\u6790\u8207\u61c9\u7528\uff0c\u63d0\u5347\u6578\u64da\u8655\u7406\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-196305","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/196305","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=196305"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/196305\/revisions"}],"predecessor-version":[{"id":196306,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/196305\/revisions\/196306"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=196305"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=196305"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=196305"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}