{"id":64849,"date":"2024-10-14T12:09:17","date_gmt":"2024-10-14T04:09:17","guid":{"rendered":"https:\/\/server.hk\/cnblog\/64849\/"},"modified":"2024-10-14T12:09:17","modified_gmt":"2024-10-14T04:09:17","slug":"mssql%e8%88%87%e6%b8%b8%e6%a8%99%e6%9c%89%e4%bd%95%e4%b8%8d%e5%90%8c%ef%bc%9f%ef%bc%88mssql%e6%b8%b8%e6%a8%99%e4%b8%80%e6%a8%a3%e5%97%8e%ef%bc%89","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/64849\/","title":{"rendered":"MSSQL\u8207\u6e38\u6a19\u6709\u4f55\u4e0d\u540c\uff1f\uff08mssql\u6e38\u6a19\u4e00\u6a23\u55ce\uff09"},"content":{"rendered":"<h1 id=\"mssql%e8%88%87%e6%b8%b8%e6%a8%99%e6%9c%89%e4%bd%95%e4%b8%8d%e5%90%8c%ef%bc%9f%ef%bc%88mssql%e6%b8%b8%e6%a8%99%e4%b8%80%e6%a8%a3%e5%97%8e%ef%bc%89-qasTvLnNHL\">MSSQL\u8207\u6e38\u6a19\u6709\u4f55\u4e0d\u540c\uff1f\uff08mssql\u6e38\u6a19\u4e00\u6a23\u55ce\uff09<\/h1>\n<p>\u5728\u8cc7\u6599\u5eab\u7ba1\u7406\u7cfb\u7d71\u4e2d\uff0cMSSQL\uff08Microsoft SQL Server\uff09\u662f\u4e00\u500b\u5ee3\u6cdb\u4f7f\u7528\u7684\u95dc\u806f\u5f0f\u8cc7\u6599\u5eab\u7cfb\u7d71\u3002\u7576\u6211\u5011\u8ac7\u8ad6MSSQL\u6642\uff0c\u6e38\u6a19\uff08Cursor\uff09\u662f\u4e00\u500b\u91cd\u8981\u7684\u6982\u5ff5\uff0c\u4f46\u5b83\u4e26\u4e0d\u662fMSSQL\u7684\u5168\u90e8\u3002\u672c\u6587\u5c07\u6df1\u5165\u63a2\u8a0eMSSQL\u8207\u6e38\u6a19\u4e4b\u9593\u7684\u5340\u5225\uff0c\u4e26\u89e3\u91cb\u6e38\u6a19\u7684\u529f\u80fd\u53ca\u5176\u5728\u8cc7\u6599\u5eab\u64cd\u4f5c\u4e2d\u7684\u61c9\u7528\u3002<\/p>\n<h2 id=\"mssql%e7%9a%84%e5%9f%ba%e6%9c%ac%e6%a6%82%e5%bf%b5-qasTvLnNHL\">MSSQL\u7684\u57fa\u672c\u6982\u5ff5<\/h2>\n<p>MSSQL\u662f\u4e00\u500b\u95dc\u806f\u5f0f\u8cc7\u6599\u5eab\u7ba1\u7406\u7cfb\u7d71\uff0c\u4e3b\u8981\u7528\u65bc\u5132\u5b58\u548c\u7ba1\u7406\u7d50\u69cb\u5316\u8cc7\u6599\u3002\u5b83\u63d0\u4f9b\u4e86\u591a\u7a2e\u529f\u80fd\uff0c\u5305\u62ec\u8cc7\u6599\u67e5\u8a62\u3001\u66f4\u65b0\u3001\u522a\u9664\u548c\u63d2\u5165\u7b49\u64cd\u4f5c\u3002MSSQL\u4f7f\u7528SQL\uff08\u7d50\u69cb\u5316\u67e5\u8a62\u8a9e\u8a00\uff09\u4f86\u57f7\u884c\u9019\u4e9b\u64cd\u4f5c\uff0c\u4e26\u652f\u63f4\u4e8b\u52d9\u8655\u7406\u3001\u7d22\u5f15\u3001\u8996\u5716\u7b49\u591a\u7a2e\u8cc7\u6599\u5eab\u529f\u80fd\u3002<\/p>\n<h2 id=\"%e6%b8%b8%e6%a8%99%e7%9a%84%e5%ae%9a%e7%be%a9%e8%88%87%e5%8a%9f%e8%83%bd-qasTvLnNHL\">\u6e38\u6a19\u7684\u5b9a\u7fa9\u8207\u529f\u80fd<\/h2>\n<p>\u6e38\u6a19\u662f\u4e00\u7a2e\u8cc7\u6599\u5eab\u7269\u4ef6\uff0c\u5141\u8a31\u7528\u6236\u9010\u884c\u8655\u7406\u67e5\u8a62\u7d50\u679c\u96c6\u3002\u7576\u67e5\u8a62\u8fd4\u56de\u591a\u884c\u8cc7\u6599\u6642\uff0c\u6e38\u6a19\u53ef\u4ee5\u8b93\u958b\u767c\u8005\u9010\u884c\u8a2a\u554f\u9019\u4e9b\u8cc7\u6599\uff0c\u9019\u5728\u67d0\u4e9b\u60c5\u6cc1\u4e0b\u662f\u975e\u5e38\u6709\u7528\u7684\u3002\u4f8b\u5982\uff0c\u7576\u9700\u8981\u5c0d\u6bcf\u4e00\u884c\u8cc7\u6599\u9032\u884c\u8907\u96dc\u7684\u8a08\u7b97\u6216\u64cd\u4f5c\u6642\uff0c\u6e38\u6a19\u63d0\u4f9b\u4e86\u4e00\u7a2e\u9748\u6d3b\u7684\u65b9\u5f0f\u4f86\u8655\u7406\u9019\u4e9b\u8cc7\u6599\u3002<\/p>\n<h3 id=\"%e6%b8%b8%e6%a8%99%e7%9a%84%e9%a1%9e%e5%9e%8b-qasTvLnNHL\">\u6e38\u6a19\u7684\u985e\u578b<\/h3>\n<ul>\n<li><strong>\u975c\u614b\u6e38\u6a19\uff08Static Cursor\uff09<\/strong>: \u9019\u7a2e\u6e38\u6a19\u5728\u6253\u958b\u6642\u6703\u8907\u88fd\u67e5\u8a62\u7d50\u679c\uff0c\u4e26\u5728\u5f8c\u7e8c\u64cd\u4f5c\u4e2d\u4e0d\u6703\u53d7\u5230\u8cc7\u6599\u8b8a\u66f4\u7684\u5f71\u97ff\u3002<\/li>\n<li><strong>\u52d5\u614b\u6e38\u6a19\uff08Dynamic Cursor\uff09<\/strong>: \u9019\u7a2e\u6e38\u6a19\u6703\u96a8\u8457\u8cc7\u6599\u7684\u8b8a\u66f4\u800c\u66f4\u65b0\uff0c\u4f7f\u7528\u8005\u53ef\u4ee5\u5373\u6642\u770b\u5230\u8cc7\u6599\u7684\u8b8a\u5316\u3002<\/li>\n<li><strong>\u5feb\u7167\u6e38\u6a19\uff08Snapshot Cursor\uff09<\/strong>: \u9019\u7a2e\u6e38\u6a19\u5728\u6253\u958b\u6642\u6703\u6355\u6349\u7576\u524d\u7684\u8cc7\u6599\u72c0\u614b\uff0c\u4e26\u5728\u5f8c\u7e8c\u64cd\u4f5c\u4e2d\u4fdd\u6301\u4e0d\u8b8a\u3002<\/li>\n<li><strong>\u524d\u5411\u6e38\u6a19\uff08Forward-Only Cursor\uff09<\/strong>: \u9019\u7a2e\u6e38\u6a19\u53ea\u80fd\u5411\u524d\u79fb\u52d5\uff0c\u7121\u6cd5\u56de\u5230\u4e4b\u524d\u7684\u884c\u3002<\/li>\n<\/ul>\n<h2 id=\"mssql%e8%88%87%e6%b8%b8%e6%a8%99%e7%9a%84%e5%8d%80%e5%88%a5-qasTvLnNHL\">MSSQL\u8207\u6e38\u6a19\u7684\u5340\u5225<\/h2>\n<p>\u96d6\u7136\u6e38\u6a19\u662fMSSQL\u7684\u4e00\u90e8\u5206\uff0c\u4f46\u5b83\u5011\u4e26\u4e0d\u76f8\u540c\u3002MSSQL\u662f\u4e00\u500b\u5b8c\u6574\u7684\u8cc7\u6599\u5eab\u7ba1\u7406\u7cfb\u7d71\uff0c\u800c\u6e38\u6a19\u53ea\u662f\u7528\u65bc\u8655\u7406\u67e5\u8a62\u7d50\u679c\u7684\u4e00\u7a2e\u5de5\u5177\u3002\u4ee5\u4e0b\u662f\u5b83\u5011\u4e4b\u9593\u7684\u5e7e\u500b\u4e3b\u8981\u5340\u5225\uff1a<\/p>\n<ul>\n<li><strong>\u529f\u80fd\u7bc4\u570d<\/strong>: MSSQL\u63d0\u4f9b\u4e86\u5168\u9762\u7684\u8cc7\u6599\u7ba1\u7406\u529f\u80fd\uff0c\u5305\u62ec\u8cc7\u6599\u5132\u5b58\u3001\u67e5\u8a62\u3001\u5831\u544a\u7b49\uff0c\u800c\u6e38\u6a19\u50c5\u7528\u65bc\u9010\u884c\u8655\u7406\u67e5\u8a62\u7d50\u679c\u3002<\/li>\n<li><strong>\u6027\u80fd\u8003\u91cf<\/strong>: \u4f7f\u7528\u6e38\u6a19\u901a\u5e38\u6703\u6bd4\u76f4\u63a5\u4f7f\u7528SQL\u67e5\u8a62\u6162\uff0c\u56e0\u70ba\u6e38\u6a19\u9700\u8981\u9010\u884c\u8655\u7406\u8cc7\u6599\uff0c\u9019\u5728\u8655\u7406\u5927\u91cf\u8cc7\u6599\u6642\u53ef\u80fd\u6703\u5c0e\u81f4\u6027\u80fd\u4e0b\u964d\u3002<\/li>\n<li><strong>\u4f7f\u7528\u5834\u666f<\/strong>: \u6e38\u6a19\u9069\u5408\u7528\u65bc\u9700\u8981\u9010\u884c\u8655\u7406\u7684\u60c5\u6cc1\uff0c\u4f8b\u5982\u8907\u96dc\u7684\u8a08\u7b97\u6216\u9700\u8981\u591a\u6b21\u8a2a\u554f\u540c\u4e00\u884c\u8cc7\u6599\u7684\u60c5\u6cc1\uff0c\u800c\u5c0d\u65bc\u7c21\u55ae\u7684\u67e5\u8a62\u548c\u66f4\u65b0\uff0c\u76f4\u63a5\u4f7f\u7528SQL\u8a9e\u53e5\u66f4\u70ba\u9ad8\u6548\u3002<\/li>\n<\/ul>\n<h2 id=\"%e6%b8%b8%e6%a8%99%e7%9a%84%e4%bd%bf%e7%94%a8%e7%af%84%e4%be%8b-qasTvLnNHL\">\u6e38\u6a19\u7684\u4f7f\u7528\u7bc4\u4f8b<\/h2>\n<p>\u4ee5\u4e0b\u662f\u4e00\u500b\u7c21\u55ae\u7684\u6e38\u6a19\u4f7f\u7528\u7bc4\u4f8b\uff0c\u5c55\u793a\u5982\u4f55\u5728MSSQL\u4e2d\u4f7f\u7528\u6e38\u6a19\u4f86\u9010\u884c\u8655\u7406\u8cc7\u6599\uff1a<\/p>\n<pre><code>\nDECLARE @EmployeeName NVARCHAR(50)\nDECLARE EmployeeCursor CURSOR FOR\nSELECT Name FROM Employees\n\nOPEN EmployeeCursor\nFETCH NEXT FROM EmployeeCursor INTO @EmployeeName\n\nWHILE @@FETCH_STATUS = 0\nBEGIN\n    PRINT @EmployeeName\n    FETCH NEXT FROM EmployeeCursor INTO @EmployeeName\nEND\n\nCLOSE EmployeeCursor\nDEALLOCATE EmployeeCursor\n<\/code><\/pre>\n<p>\u5728\u9019\u500b\u7bc4\u4f8b\u4e2d\uff0c\u6211\u5011\u5b9a\u7fa9\u4e86\u4e00\u500b\u6e38\u6a19\u4f86\u9078\u53d6\u54e1\u5de5\u7684\u540d\u5b57\uff0c\u7136\u5f8c\u9010\u884c\u6253\u5370\u51fa\u4f86\u3002\u9019\u5c55\u793a\u4e86\u6e38\u6a19\u5982\u4f55\u5728MSSQL\u4e2d\u904b\u4f5c\u3002<\/p>\n<h2 id=\"%e7%b5%90%e8%ab%96-qasTvLnNHL\">\u7d50\u8ad6<\/h2>\n<p>MSSQL\u548c\u6e38\u6a19\u4e4b\u9593\u7684\u5340\u5225\u5728\u65bc\u529f\u80fd\u7bc4\u570d\u548c\u4f7f\u7528\u5834\u666f\u3002MSSQL\u662f\u4e00\u500b\u5f37\u5927\u7684\u8cc7\u6599\u5eab\u7ba1\u7406\u7cfb\u7d71\uff0c\u800c\u6e38\u6a19\u5247\u662f\u4e00\u7a2e\u7528\u65bc\u9010\u884c\u8655\u7406\u67e5\u8a62\u7d50\u679c\u7684\u5de5\u5177\u3002\u5728\u9078\u64c7\u4f7f\u7528\u6e38\u6a19\u6642\uff0c\u958b\u767c\u8005\u61c9\u8003\u616e\u6027\u80fd\u548c\u9700\u6c42\uff0c\u4ee5\u78ba\u4fdd\u6700\u4f73\u7684\u8cc7\u6599\u8655\u7406\u6548\u7387\u3002<\/p>\n<p>\u5982\u9700\u4e86\u89e3\u66f4\u591a\u95dc\u65bc<em>VPS<\/em>\u3001<em>\u9999\u6e2fVPS<\/em>\u53ca\u5176\u4ed6<em>\u4f3a\u670d\u5668<\/em>\u89e3\u6c7a\u65b9\u6848\uff0c\u8acb\u8a2a\u554f\u6211\u5011\u7684\u7db2\u7ad9 <a href=\"https:\/\/server.hk\">Server.HK<\/a>\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u63a2\u7d22MSSQL\u8207\u6e38\u6a19\u7684\u5340\u5225\uff0c\u4e86\u89e3\u6e38\u6a19\u7684\u529f\u80fd\u53ca\u5176\u5728\u6578\u64da\u8655\u7406\u4e2d\u7684\u61c9\u7528\uff0c\u63ed\u793a\u4e8c\u8005\u7684\u4e0d\u540c\u4e4b\u8655\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-64849","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/64849","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=64849"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/64849\/revisions"}],"predecessor-version":[{"id":64850,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/64849\/revisions\/64850"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=64849"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=64849"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=64849"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}