{"id":183158,"date":"2024-11-10T02:29:19","date_gmt":"2024-11-09T18:29:19","guid":{"rendered":"https:\/\/server.hk\/cnblog\/183158\/"},"modified":"2024-11-10T02:29:20","modified_gmt":"2024-11-09T18:29:20","slug":"%e5%af%a6%e7%8f%besql-server%e5%8b%95%e6%85%8b%e6%b8%b8%e6%a8%99%e7%9a%84%e5%89%b5%e5%bb%ba%e6%ad%a5%e9%a9%9f","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/183158\/","title":{"rendered":"\u5be6\u73feSQL Server\u52d5\u614b\u6e38\u6a19\u7684\u5275\u5efa\u6b65\u9a5f"},"content":{"rendered":"<h1 id=\"%e5%af%a6%e7%8f%besql-server%e5%8b%95%e6%85%8b%e6%b8%b8%e6%a8%99%e7%9a%84%e5%89%b5%e5%bb%ba%e6%ad%a5%e9%a9%9f-nySQAqAfxT\">\u5be6\u73feSQL Server\u52d5\u614b\u6e38\u6a19\u7684\u5275\u5efa\u6b65\u9a5f<\/h1>\n<p>\u5728SQL Server\u4e2d\uff0c\u6e38\u6a19\u662f\u4e00\u7a2e\u7528\u65bc\u9010\u884c\u8655\u7406\u67e5\u8a62\u7d50\u679c\u96c6\u7684\u6578\u64da\u7d50\u69cb\u3002\u52d5\u614b\u6e38\u6a19\u5141\u8a31\u7528\u6236\u5728\u6e38\u6a19\u6253\u958b\u5f8c\uff0c\u5c0d\u7d50\u679c\u96c6\u9032\u884c\u66f4\u6539\uff0c\u4e26\u80fd\u5920\u5373\u6642\u53cd\u6620\u9019\u4e9b\u66f4\u6539\u3002\u9019\u4f7f\u5f97\u52d5\u614b\u6e38\u6a19\u5728\u9700\u8981\u5c0d\u6578\u64da\u9032\u884c\u983b\u7e41\u66f4\u65b0\u7684\u60c5\u6cc1\u4e0b\u7279\u5225\u6709\u7528\u3002\u672c\u6587\u5c07\u4ecb\u7d39\u5982\u4f55\u5728SQL Server\u4e2d\u5275\u5efa\u52d5\u614b\u6e38\u6a19\u7684\u6b65\u9a5f\u3002<\/p>\n<h2 id=\"1-%e6%b8%b8%e6%a8%99%e7%9a%84%e5%9f%ba%e6%9c%ac%e6%a6%82%e5%bf%b5-nySQAqAfxT\">1. \u6e38\u6a19\u7684\u57fa\u672c\u6982\u5ff5<\/h2>\n<p>\u5728\u6df1\u5165\u52d5\u614b\u6e38\u6a19\u7684\u5275\u5efa\u4e4b\u524d\uff0c\u4e86\u89e3\u6e38\u6a19\u7684\u57fa\u672c\u6982\u5ff5\u662f\u5fc5\u8981\u7684\u3002\u6e38\u6a19\u53ef\u4ee5\u5206\u70ba\u4ee5\u4e0b\u5e7e\u7a2e\u985e\u578b\uff1a<\/p>\n<ul>\n<li><strong>\u975c\u614b\u6e38\u6a19\uff1a<\/strong>\u5728\u6e38\u6a19\u6253\u958b\u6642\uff0c\u7d50\u679c\u96c6\u7684\u5feb\u7167\u88ab\u5275\u5efa\uff0c\u5f8c\u7e8c\u7684\u6578\u64da\u66f4\u6539\u4e0d\u6703\u5f71\u97ff\u5230\u6e38\u6a19\u3002<\/li>\n<li><strong>\u52d5\u614b\u6e38\u6a19\uff1a<\/strong>\u5141\u8a31\u7528\u6236\u5728\u6e38\u6a19\u6253\u958b\u5f8c\u5c0d\u7d50\u679c\u96c6\u9032\u884c\u66f4\u6539\uff0c\u4e26\u80fd\u5373\u6642\u53cd\u6620\u9019\u4e9b\u66f4\u6539\u3002<\/li>\n<li><strong>\u5feb\u7167\u6e38\u6a19\uff1a<\/strong>\u985e\u4f3c\u65bc\u975c\u614b\u6e38\u6a19\uff0c\u4f46\u5728\u6e38\u6a19\u6253\u958b\u6642\uff0c\u7d50\u679c\u96c6\u7684\u5feb\u7167\u662f\u57fa\u65bc\u7576\u524d\u4e8b\u52d9\u7684\u3002<\/li>\n<li><strong>\u524d\u5411\u6e38\u6a19\uff1a<\/strong>\u50c5\u5141\u8a31\u5411\u524d\u79fb\u52d5\uff0c\u7121\u6cd5\u5411\u5f8c\u79fb\u52d5\u3002<\/li>\n<\/ul>\n<h2 id=\"2-%e5%89%b5%e5%bb%ba%e5%8b%95%e6%85%8b%e6%b8%b8%e6%a8%99%e7%9a%84%e6%ad%a5%e9%a9%9f-nySQAqAfxT\">2. \u5275\u5efa\u52d5\u614b\u6e38\u6a19\u7684\u6b65\u9a5f<\/h2>\n<p>\u4ee5\u4e0b\u662f\u5275\u5efa\u52d5\u614b\u6e38\u6a19\u7684\u5177\u9ad4\u6b65\u9a5f\uff1a<\/p>\n<h3 id=\"%e6%ad%a5%e9%a9%9f%e4%b8%80%ef%bc%9a%e5%ae%9a%e7%be%a9%e6%b8%b8%e6%a8%99-nySQAqAfxT\">\u6b65\u9a5f\u4e00\uff1a\u5b9a\u7fa9\u6e38\u6a19<\/h3>\n<p>\u9996\u5148\uff0c\u9700\u8981\u5b9a\u7fa9\u4e00\u500b\u6e38\u6a19\uff0c\u9019\u53ef\u4ee5\u901a\u904e\u4f7f\u7528 <code>DECLARE<\/code> \u8a9e\u53e5\u4f86\u5b8c\u6210\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u793a\u4f8b\uff1a<\/p>\n<pre><code>DECLARE myCursor CURSOR DYNAMIC FOR\nSELECT EmployeeID, FirstName, LastName\nFROM Employees\nWHERE Department = 'Sales';<\/code><\/pre>\n<h3 id=\"%e6%ad%a5%e9%a9%9f%e4%ba%8c%ef%bc%9a%e6%89%93%e9%96%8b%e6%b8%b8%e6%a8%99-nySQAqAfxT\">\u6b65\u9a5f\u4e8c\uff1a\u6253\u958b\u6e38\u6a19<\/h3>\n<p>\u5b9a\u7fa9\u6e38\u6a19\u5f8c\uff0c\u63a5\u4e0b\u4f86\u9700\u8981\u6253\u958b\u5b83\uff0c\u4ee5\u4fbf\u53ef\u4ee5\u958b\u59cb\u5f9e\u4e2d\u8b80\u53d6\u6578\u64da\uff1a<\/p>\n<pre><code>OPEN myCursor;<\/code><\/pre>\n<h3 id=\"%e6%ad%a5%e9%a9%9f%e4%b8%89%ef%bc%9a%e6%8f%90%e5%8f%96%e6%95%b8%e6%93%9a-nySQAqAfxT\">\u6b65\u9a5f\u4e09\uff1a\u63d0\u53d6\u6578\u64da<\/h3>\n<p>\u4f7f\u7528 <code>FETCH<\/code> \u8a9e\u53e5\u5f9e\u6e38\u6a19\u4e2d\u63d0\u53d6\u6578\u64da\u3002\u4ee5\u4e0b\u662f\u63d0\u53d6\u6578\u64da\u7684\u793a\u4f8b\uff1a<\/p>\n<pre><code>FETCH NEXT FROM myCursor INTO @EmployeeID, @FirstName, @LastName;<\/code><\/pre>\n<p>\u9019\u88e1\uff0c<code>@EmployeeID<\/code>\u3001<code>@FirstName<\/code> \u548c <code>@LastName<\/code> \u662f\u4e8b\u5148\u5b9a\u7fa9\u7684\u8b8a\u91cf\uff0c\u7528\u65bc\u5b58\u5132\u63d0\u53d6\u7684\u6578\u64da\u3002<\/p>\n<h3 id=\"%e6%ad%a5%e9%a9%9f%e5%9b%9b%ef%bc%9a%e8%99%95%e7%90%86%e6%95%b8%e6%93%9a-nySQAqAfxT\">\u6b65\u9a5f\u56db\uff1a\u8655\u7406\u6578\u64da<\/h3>\n<p>\u5728\u63d0\u53d6\u6578\u64da\u5f8c\uff0c\u53ef\u4ee5\u5c0d\u5176\u9032\u884c\u8655\u7406\u3002\u4f8b\u5982\uff0c\u53ef\u4ee5\u4f7f\u7528 <code>WHILE<\/code> \u5faa\u74b0\u4f86\u904d\u6b77\u6240\u6709\u884c\uff1a<\/p>\n<pre><code>WHILE @@FETCH_STATUS = 0\nBEGIN\n    -- \u5728\u9019\u88e1\u8655\u7406\u6578\u64da\n    PRINT @FirstName + ' ' + @LastName;\n\n    FETCH NEXT FROM myCursor INTO @EmployeeID, @FirstName, @LastName;\nEND;<\/code><\/pre>\n<h3 id=\"%e6%ad%a5%e9%a9%9f%e4%ba%94%ef%bc%9a%e9%97%9c%e9%96%89%e5%92%8c%e9%87%8b%e6%94%be%e6%b8%b8%e6%a8%99-nySQAqAfxT\">\u6b65\u9a5f\u4e94\uff1a\u95dc\u9589\u548c\u91cb\u653e\u6e38\u6a19<\/h3>\n<p>\u5b8c\u6210\u6578\u64da\u8655\u7406\u5f8c\uff0c\u61c9\u95dc\u9589\u6e38\u6a19\u4e26\u91cb\u653e\u8cc7\u6e90\uff1a<\/p>\n<pre><code>CLOSE myCursor;\nDEALLOCATE myCursor;<\/code><\/pre>\n<h2 id=\"3-%e6%b3%a8%e6%84%8f%e4%ba%8b%e9%a0%85-nySQAqAfxT\">3. \u6ce8\u610f\u4e8b\u9805<\/h2>\n<p>\u5728\u4f7f\u7528\u52d5\u614b\u6e38\u6a19\u6642\uff0c\u6709\u5e7e\u9ede\u9700\u8981\u6ce8\u610f\uff1a<\/p>\n<ul>\n<li>\u52d5\u614b\u6e38\u6a19\u7684\u6027\u80fd\u53ef\u80fd\u6703\u53d7\u5230\u5f71\u97ff\uff0c\u7279\u5225\u662f\u5728\u8655\u7406\u5927\u91cf\u6578\u64da\u6642\u3002<\/li>\n<li>\u78ba\u4fdd\u5728\u4f7f\u7528\u6e38\u6a19\u5f8c\uff0c\u59cb\u7d42\u95dc\u9589\u548c\u91cb\u653e\u6e38\u6a19\uff0c\u4ee5\u907f\u514d\u8cc7\u6e90\u6cc4\u6f0f\u3002<\/li>\n<li>\u5728\u591a\u7528\u6236\u74b0\u5883\u4e2d\uff0c\u52d5\u614b\u6e38\u6a19\u53ef\u80fd\u6703\u5c0e\u81f4\u6578\u64da\u4e00\u81f4\u6027\u554f\u984c\uff0c\u56e0\u6b64\u9700\u8981\u8b39\u614e\u4f7f\u7528\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b8%bd%e7%b5%90-nySQAqAfxT\">\u7e3d\u7d50<\/h2>\n<p>\u52d5\u614b\u6e38\u6a19\u5728SQL Server\u4e2d\u63d0\u4f9b\u4e86\u4e00\u7a2e\u9748\u6d3b\u7684\u65b9\u5f0f\u4f86\u8655\u7406\u67e5\u8a62\u7d50\u679c\u96c6\u3002\u901a\u904e\u4e0a\u8ff0\u6b65\u9a5f\uff0c\u60a8\u53ef\u4ee5\u8f15\u9b06\u5275\u5efa\u548c\u4f7f\u7528\u52d5\u614b\u6e38\u6a19\u4f86\u6eff\u8db3\u60a8\u7684\u6578\u64da\u8655\u7406\u9700\u6c42\u3002\u82e5\u60a8\u9700\u8981\u66f4\u9ad8\u6548\u7684\u6578\u64da\u8655\u7406\u89e3\u6c7a\u65b9\u6848\uff0c\u8003\u616e\u4f7f\u7528 <a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a> \u670d\u52d9\uff0c\u4ee5\u7372\u5f97\u66f4\u597d\u7684\u6027\u80fd\u548c\u7a69\u5b9a\u6027\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4e86\u89e3\u5982\u4f55\u5728SQL Server\u4e2d\u5275\u5efa\u52d5\u614b\u6e38\u6a19\u7684\u6b65\u9a5f\uff0c\u63d0\u5347\u6578\u64da\u67e5\u8a62\u6548\u7387\uff0c\u7c21\u5316\u6578\u64da\u64cd\u4f5c\u904e\u7a0b\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-183158","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/183158","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=183158"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/183158\/revisions"}],"predecessor-version":[{"id":183159,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/183158\/revisions\/183159"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=183158"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=183158"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=183158"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}