{"id":194967,"date":"2024-11-13T11:05:35","date_gmt":"2024-11-13T03:05:35","guid":{"rendered":"https:\/\/server.hk\/cnblog\/194967\/"},"modified":"2024-11-13T11:05:36","modified_gmt":"2024-11-13T03:05:36","slug":"%e7%94%a8%e6%88%b6%e5%ae%9a%e7%be%a9sql-server%e5%87%bd%e6%95%b8%e7%9a%84%e6%8f%8f%e8%bf%b0","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/194967\/","title":{"rendered":"\u7528\u6236\u5b9a\u7fa9SQL Server\u51fd\u6578\u7684\u63cf\u8ff0"},"content":{"rendered":"<h1 id=\"%e7%94%a8%e6%88%b6%e5%ae%9a%e7%be%a9sql-server%e5%87%bd%e6%95%b8%e7%9a%84%e6%8f%8f%e8%bf%b0-bLxtJYUGhd\">\u7528\u6236\u5b9a\u7fa9SQL Server\u51fd\u6578\u7684\u63cf\u8ff0<\/h1>\n<p>\u5728\u6578\u64da\u5eab\u7ba1\u7406\u7cfb\u7d71\u4e2d\uff0cSQL Server\u662f\u4e00\u500b\u5ee3\u6cdb\u4f7f\u7528\u7684\u95dc\u806f\u6578\u64da\u5eab\u7ba1\u7406\u7cfb\u7d71\u3002\u7528\u6236\u5b9a\u7fa9\u51fd\u6578\uff08User-Defined Functions, UDFs\uff09\u662fSQL Server\u7684\u4e00\u500b\u91cd\u8981\u7279\u6027\uff0c\u5141\u8a31\u7528\u6236\u5275\u5efa\u81ea\u5b9a\u7fa9\u7684\u51fd\u6578\u4ee5\u64f4\u5c55SQL Server\u7684\u529f\u80fd\u3002\u9019\u4e9b\u51fd\u6578\u53ef\u4ee5\u7528\u4f86\u57f7\u884c\u8a08\u7b97\u3001\u6578\u64da\u8f49\u63db\u6216\u5176\u4ed6\u64cd\u4f5c\uff0c\u4e26\u4e14\u53ef\u4ee5\u5728\u67e5\u8a62\u4e2d\u91cd\u8907\u4f7f\u7528\uff0c\u5f9e\u800c\u63d0\u9ad8\u4ee3\u78bc\u7684\u53ef\u8b80\u6027\u548c\u53ef\u7dad\u8b77\u6027\u3002<\/p>\n<h2 id=\"%e7%94%a8%e6%88%b6%e5%ae%9a%e7%be%a9%e5%87%bd%e6%95%b8%e7%9a%84%e9%a1%9e%e5%9e%8b-bLxtJYUGhd\">\u7528\u6236\u5b9a\u7fa9\u51fd\u6578\u7684\u985e\u578b<\/h2>\n<p>SQL Server\u4e2d\u7684\u7528\u6236\u5b9a\u7fa9\u51fd\u6578\u4e3b\u8981\u5206\u70ba\u5169\u7a2e\u985e\u578b\uff1a<\/p>\n<ul>\n<li><strong>\u6a19\u91cf\u51fd\u6578\uff08Scalar Functions\uff09<\/strong>\uff1a\u9019\u985e\u51fd\u6578\u8fd4\u56de\u55ae\u4e00\u7684\u503c\u3002\u5b83\u5011\u53ef\u4ee5\u7528\u65bc\u8a08\u7b97\u67d0\u500b\u503c\uff0c\u4e26\u5728\u67e5\u8a62\u4e2d\u4f5c\u70ba\u8868\u9054\u5f0f\u4f7f\u7528\u3002<\/li>\n<li><strong>\u8868\u503c\u51fd\u6578\uff08Table-Valued Functions\uff09<\/strong>\uff1a\u9019\u985e\u51fd\u6578\u8fd4\u56de\u4e00\u500b\u8868\uff0c\u53ef\u4ee5\u5728FROM\u5b50\u53e5\u4e2d\u4f7f\u7528\uff0c\u985e\u4f3c\u65bc\u4e00\u500b\u8868\u683c\u3002<\/li>\n<\/ul>\n<h2 id=\"%e5%89%b5%e5%bb%ba%e7%94%a8%e6%88%b6%e5%ae%9a%e7%be%a9%e5%87%bd%e6%95%b8-bLxtJYUGhd\">\u5275\u5efa\u7528\u6236\u5b9a\u7fa9\u51fd\u6578<\/h2>\n<p>\u5275\u5efa\u7528\u6236\u5b9a\u7fa9\u51fd\u6578\u7684\u57fa\u672c\u8a9e\u6cd5\u5982\u4e0b\uff1a<\/p>\n<pre><code>CREATE FUNCTION \u51fd\u6578\u540d\u7a31 (@\u53c3\u65781 \u6578\u64da\u985e\u578b, @\u53c3\u65782 \u6578\u64da\u985e\u578b)\nRETURNS \u8fd4\u56de\u6578\u64da\u985e\u578b\nAS\nBEGIN\n    -- \u51fd\u6578\u908f\u8f2f\n    RETURN \u8fd4\u56de\u503c\nEND<\/code><\/pre>\n<h3 id=\"%e6%a8%99%e9%87%8f%e5%87%bd%e6%95%b8%e7%a4%ba%e4%be%8b-bLxtJYUGhd\">\u6a19\u91cf\u51fd\u6578\u793a\u4f8b<\/h3>\n<p>\u4ee5\u4e0b\u662f\u4e00\u500b\u7c21\u55ae\u7684\u6a19\u91cf\u51fd\u6578\u793a\u4f8b\uff0c\u8a72\u51fd\u6578\u8a08\u7b97\u5169\u500b\u6574\u6578\u7684\u548c\uff1a<\/p>\n<pre><code>CREATE FUNCTION dbo.AddNumbers (@Num1 INT, @Num2 INT)\nRETURNS INT\nAS\nBEGIN\n    RETURN @Num1 + @Num2\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.AddNumbers(5, 10) AS SumResult<\/code><\/pre>\n<h3 id=\"%e8%a1%a8%e5%80%bc%e5%87%bd%e6%95%b8%e7%a4%ba%e4%be%8b-bLxtJYUGhd\">\u8868\u503c\u51fd\u6578\u793a\u4f8b<\/h3>\n<p>\u4ee5\u4e0b\u662f\u4e00\u500b\u8868\u503c\u51fd\u6578\u7684\u793a\u4f8b\uff0c\u8a72\u51fd\u6578\u8fd4\u56de\u4e00\u500b\u5305\u542b\u6240\u6709\u54e1\u5de5\u7684\u8868\uff1a<\/p>\n<pre><code>CREATE FUNCTION dbo.GetAllEmployees()\nRETURNS TABLE\nAS\nRETURN\n(\n    SELECT EmployeeID, FirstName, LastName\n    FROM Employees\n)<\/code><\/pre>\n<p>\u4f7f\u7528\u9019\u500b\u51fd\u6578\u7684\u67e5\u8a62\u793a\u4f8b\u5982\u4e0b\uff1a<\/p>\n<pre><code>SELECT * FROM dbo.GetAllEmployees()<\/code><\/pre>\n<h2 id=\"%e7%94%a8%e6%88%b6%e5%ae%9a%e7%be%a9%e5%87%bd%e6%95%b8%e7%9a%84%e5%84%aa%e7%bc%ba%e9%bb%9e-bLxtJYUGhd\">\u7528\u6236\u5b9a\u7fa9\u51fd\u6578\u7684\u512a\u7f3a\u9ede<\/h2>\n<p>\u7528\u6236\u5b9a\u7fa9\u51fd\u6578\u5728SQL Server\u4e2d\u6709\u5176\u512a\u7f3a\u9ede\uff1a<\/p>\n<ul>\n<li><strong>\u512a\u9ede\uff1a<\/strong>\n<ul>\n<li>\u63d0\u9ad8\u4ee3\u78bc\u91cd\u7528\u6027\uff1a\u7528\u6236\u53ef\u4ee5\u5728\u591a\u500b\u67e5\u8a62\u4e2d\u91cd\u8907\u4f7f\u7528\u76f8\u540c\u7684\u51fd\u6578\u3002<\/li>\n<li>\u589e\u5f37\u53ef\u8b80\u6027\uff1a\u5c07\u8907\u96dc\u7684\u908f\u8f2f\u5c01\u88dd\u5728\u51fd\u6578\u4e2d\uff0c\u4f7f\u67e5\u8a62\u66f4\u6613\u65bc\u7406\u89e3\u3002<\/li>\n<\/ul>\n<\/li>\n<li><strong>\u7f3a\u9ede\uff1a<\/strong>\n<ul>\n<li>\u6027\u80fd\u554f\u984c\uff1a\u67d0\u4e9b\u60c5\u6cc1\u4e0b\uff0c\u4f7f\u7528\u6a19\u91cf\u51fd\u6578\u53ef\u80fd\u6703\u5c0e\u81f4\u6027\u80fd\u4e0b\u964d\uff0c\u7279\u5225\u662f\u5728\u5927\u578b\u6578\u64da\u96c6\u4e0a\u3002<\/li>\n<li>\u8abf\u8a66\u56f0\u96e3\uff1a\u7528\u6236\u5b9a\u7fa9\u51fd\u6578\u7684\u8abf\u8a66\u53ef\u80fd\u6bd4\u5b58\u5132\u904e\u7a0b\u66f4\u5177\u6311\u6230\u6027\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<h2 id=\"%e7%b8%bd%e7%b5%90-bLxtJYUGhd\">\u7e3d\u7d50<\/h2>\n<p>\u7528\u6236\u5b9a\u7fa9SQL Server\u51fd\u6578\u662f\u4e00\u500b\u5f37\u5927\u7684\u5de5\u5177\uff0c\u80fd\u5920\u5e6b\u52a9\u958b\u767c\u8005\u5275\u5efa\u53ef\u91cd\u7528\u7684\u4ee3\u78bc\uff0c\u4e26\u63d0\u9ad8\u67e5\u8a62\u7684\u53ef\u8b80\u6027\u3002\u7121\u8ad6\u662f\u6a19\u91cf\u51fd\u6578\u9084\u662f\u8868\u503c\u51fd\u6578\uff0c\u90fd\u80fd\u5728\u4e0d\u540c\u7684\u5834\u666f\u4e2d\u767c\u63ee\u91cd\u8981\u4f5c\u7528\u3002\u4e86\u89e3\u5982\u4f55\u6b63\u78ba\u4f7f\u7528\u9019\u4e9b\u51fd\u6578\uff0c\u5c07\u6709\u52a9\u65bc\u63d0\u5347\u6578\u64da\u5eab\u7684\u6027\u80fd\u548c\u53ef\u7dad\u8b77\u6027\u3002<\/p>\n<p>\u5982\u679c\u60a8\u5c0d\u65bc\u5728\u9999\u6e2f\u7684 <a href=\"https:\/\/server.hk\">VPS<\/a> \u89e3\u6c7a\u65b9\u6848\u611f\u8208\u8da3\uff0c\u6216\u60f3\u4e86\u89e3\u66f4\u591a\u95dc\u65bc <a href=\"https:\/\/server.hk\">\u9999\u6e2f\u4f3a\u670d\u5668<\/a> \u7684\u8cc7\u8a0a\uff0c\u6b61\u8fce\u8a2a\u554f\u6211\u5011\u7684\u7db2\u7ad9\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4e86\u89e3\u5982\u4f55\u5275\u5efa\u548c\u4f7f\u7528\u7528\u6236\u5b9a\u7fa9SQL Server\u51fd\u6578\uff0c\u4ee5\u64f4\u5c55\u6578\u64da\u5eab\u529f\u80fd\u4e26\u63d0\u9ad8\u67e5\u8a62\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-194967","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/194967","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=194967"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/194967\/revisions"}],"predecessor-version":[{"id":194968,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/194967\/revisions\/194968"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=194967"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=194967"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=194967"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}