{"id":194925,"date":"2024-11-13T10:44:30","date_gmt":"2024-11-13T02:44:30","guid":{"rendered":"https:\/\/server.hk\/cnblog\/194925\/"},"modified":"2024-11-13T10:44:31","modified_gmt":"2024-11-13T02:44:31","slug":"%e7%94%a8sql%e6%b8%b8%e6%a8%99%e9%81%8d%e6%ad%b7%e5%be%aa%e7%92%b0%e6%95%b8%e6%93%9a%e7%9a%84%e6%96%b9%e6%b3%95","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/194925\/","title":{"rendered":"\u7528SQL\u6e38\u6a19\u904d\u6b77\u5faa\u74b0\u6578\u64da\u7684\u65b9\u6cd5"},"content":{"rendered":"<h1 id=\"%e7%94%a8sql%e6%b8%b8%e6%a8%99%e9%81%8d%e6%ad%b7%e5%be%aa%e7%92%b0%e6%95%b8%e6%93%9a%e7%9a%84%e6%96%b9%e6%b3%95-exfWURWppt\">\u7528SQL\u6e38\u6a19\u904d\u6b77\u5faa\u74b0\u6578\u64da\u7684\u65b9\u6cd5<\/h1>\n<p>\u5728\u6578\u64da\u5eab\u7ba1\u7406\u4e2d\uff0cSQL\u6e38\u6a19\u662f\u4e00\u7a2e\u91cd\u8981\u7684\u5de5\u5177\uff0c\u80fd\u5920\u8b93\u958b\u767c\u8005\u9010\u884c\u8655\u7406\u67e5\u8a62\u7d50\u679c\u3002\u6e38\u6a19\u7684\u4f7f\u7528\u5728\u67d0\u4e9b\u60c5\u6cc1\u4e0b\u662f\u5fc5\u9700\u7684\uff0c\u7279\u5225\u662f\u7576\u9700\u8981\u5c0d\u67e5\u8a62\u7d50\u679c\u9032\u884c\u9010\u884c\u64cd\u4f5c\u6642\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u5982\u4f55\u4f7f\u7528SQL\u6e38\u6a19\u4f86\u904d\u6b77\u5faa\u74b0\u6578\u64da\uff0c\u4e26\u63d0\u4f9b\u76f8\u95dc\u7684\u793a\u4f8b\u548c\u4ee3\u78bc\u7247\u6bb5\u3002<\/p>\n<h2 id=\"%e4%bb%80%e9%ba%bc%e6%98%afsql%e6%b8%b8%e6%a8%99%ef%bc%9f-exfWURWppt\">\u4ec0\u9ebc\u662fSQL\u6e38\u6a19\uff1f<\/h2>\n<p>SQL\u6e38\u6a19\u662f\u4e00\u7a2e\u6578\u64da\u5eab\u5c0d\u8c61\uff0c\u5141\u8a31\u7528\u6236\u9010\u884c\u8a2a\u554f\u67e5\u8a62\u7d50\u679c\u96c6\u3002\u8207\u4e00\u6b21\u6027\u8fd4\u56de\u6240\u6709\u7d50\u679c\u7684\u67e5\u8a62\u4e0d\u540c\uff0c\u6e38\u6a19\u63d0\u4f9b\u4e86\u4e00\u7a2e\u66f4\u9748\u6d3b\u7684\u65b9\u5f0f\u4f86\u8655\u7406\u6578\u64da\u3002\u6e38\u6a19\u901a\u5e38\u7528\u65bc\u9700\u8981\u9010\u884c\u8655\u7406\u7684\u60c5\u6cc1\uff0c\u4f8b\u5982\u5728\u6bcf\u4e00\u884c\u4e0a\u57f7\u884c\u8a08\u7b97\u6216\u66f4\u65b0\u64cd\u4f5c\u3002<\/p>\n<h2 id=\"%e6%b8%b8%e6%a8%99%e7%9a%84%e9%a1%9e%e5%9e%8b-exfWURWppt\">\u6e38\u6a19\u7684\u985e\u578b<\/h2>\n<p>\u5728SQL\u4e2d\uff0c\u6e38\u6a19\u4e3b\u8981\u6709\u5169\u7a2e\u985e\u578b\uff1a<\/p>\n<ul>\n<li><strong>\u986f\u5f0f\u6e38\u6a19\uff1a<\/strong>\u7528\u6236\u9700\u8981\u660e\u78ba\u5730\u8072\u660e\u548c\u63a7\u5236\u6e38\u6a19\u7684\u751f\u547d\u9031\u671f\u3002\u9019\u7a2e\u6e38\u6a19\u901a\u5e38\u7528\u65bc\u8907\u96dc\u7684\u64cd\u4f5c\u3002<\/li>\n<li><strong>\u96b1\u5f0f\u6e38\u6a19\uff1a<\/strong>\u7531\u6578\u64da\u5eab\u7cfb\u7d71\u81ea\u52d5\u7ba1\u7406\uff0c\u901a\u5e38\u7528\u65bc\u7c21\u55ae\u7684\u67e5\u8a62\u64cd\u4f5c\u3002<\/li>\n<\/ul>\n<h2 id=\"%e4%bd%bf%e7%94%a8%e9%a1%af%e5%bc%8f%e6%b8%b8%e6%a8%99%e7%9a%84%e6%ad%a5%e9%a9%9f-exfWURWppt\">\u4f7f\u7528\u986f\u5f0f\u6e38\u6a19\u7684\u6b65\u9a5f<\/h2>\n<p>\u4f7f\u7528\u986f\u5f0f\u6e38\u6a19\u904d\u6b77\u6578\u64da\u7684\u57fa\u672c\u6b65\u9a5f\u5982\u4e0b\uff1a<\/p>\n<ol>\n<li>\u8072\u660e\u6e38\u6a19<\/li>\n<li>\u6253\u958b\u6e38\u6a19<\/li>\n<li>\u63d0\u53d6\u6578\u64da<\/li>\n<li>\u8655\u7406\u6578\u64da<\/li>\n<li>\u95dc\u9589\u6e38\u6a19<\/li>\n<li>\u91cb\u653e\u6e38\u6a19<\/li>\n<\/ol>\n<h3 id=\"%e7%a4%ba%e4%be%8b%e4%bb%a3%e7%a2%bc-exfWURWppt\">\u793a\u4f8b\u4ee3\u78bc<\/h3>\n<pre><code>\nDECLARE @EmployeeName NVARCHAR(100);\nDECLARE EmployeeCursor CURSOR FOR\nSELECT Name FROM Employees;\n\nOPEN EmployeeCursor;\n\nFETCH NEXT FROM EmployeeCursor INTO @EmployeeName;\n\nWHILE @@FETCH_STATUS = 0\nBEGIN\n    PRINT @EmployeeName; -- \u5728\u9019\u88e1\u53ef\u4ee5\u9032\u884c\u5176\u4ed6\u64cd\u4f5c\n    FETCH NEXT FROM EmployeeCursor INTO @EmployeeName;\nEND\n\nCLOSE EmployeeCursor;\nDEALLOCATE EmployeeCursor;\n<\/code><\/pre>\n<p>\u5728\u4e0a\u8ff0\u793a\u4f8b\u4e2d\uff0c\u6211\u5011\u9996\u5148\u8072\u660e\u4e86\u4e00\u500b\u6e38\u6a19\uff0c\u8a72\u6e38\u6a19\u9078\u64c7\u4e86\u201cEmployees\u201d\u8868\u4e2d\u7684\u6240\u6709\u54e1\u5de5\u59d3\u540d\u3002\u7136\u5f8c\uff0c\u6211\u5011\u6253\u958b\u6e38\u6a19\u4e26\u4f7f\u7528FETCH NEXT\u8a9e\u53e5\u9010\u884c\u63d0\u53d6\u6578\u64da\u3002\u5728WHILE\u5faa\u74b0\u4e2d\uff0c\u6211\u5011\u53ef\u4ee5\u5c0d\u6bcf\u4e00\u884c\u6578\u64da\u9032\u884c\u8655\u7406\uff0c\u9019\u88e1\u7684\u4f8b\u5b50\u662f\u6253\u5370\u51fa\u54e1\u5de5\u59d3\u540d\u3002\u6700\u5f8c\uff0c\u6211\u5011\u95dc\u9589\u4e26\u91cb\u653e\u6e38\u6a19\u3002<\/p>\n<h2 id=\"%e6%b8%b8%e6%a8%99%e7%9a%84%e5%84%aa%e7%bc%ba%e9%bb%9e-exfWURWppt\">\u6e38\u6a19\u7684\u512a\u7f3a\u9ede<\/h2>\n<p>\u4f7f\u7528\u6e38\u6a19\u6709\u5176\u512a\u7f3a\u9ede\uff1a<\/p>\n<ul>\n<li><strong>\u512a\u9ede\uff1a<\/strong>\n<ul>\n<li>\u80fd\u5920\u9010\u884c\u8655\u7406\u6578\u64da\uff0c\u9069\u5408\u8907\u96dc\u7684\u696d\u52d9\u908f\u8f2f\u3002<\/li>\n<li>\u53ef\u4ee5\u5728\u6bcf\u4e00\u884c\u4e0a\u57f7\u884c\u591a\u7a2e\u64cd\u4f5c\u3002<\/li>\n<\/ul>\n<\/li>\n<li><strong>\u7f3a\u9ede\uff1a<\/strong>\n<ul>\n<li>\u6027\u80fd\u8f03\u5dee\uff0c\u56e0\u70ba\u9010\u884c\u8655\u7406\u6bd4\u6279\u91cf\u8655\u7406\u8981\u6162\u3002<\/li>\n<li>\u4f54\u7528\u66f4\u591a\u7684\u7cfb\u7d71\u8cc7\u6e90\uff0c\u7279\u5225\u662f\u5728\u8655\u7406\u5927\u91cf\u6578\u64da\u6642\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<h2 id=\"%e7%b5%90%e8%ab%96-exfWURWppt\">\u7d50\u8ad6<\/h2>\n<p>SQL\u6e38\u6a19\u662f\u4e00\u500b\u5f37\u5927\u7684\u5de5\u5177\uff0c\u80fd\u5920\u5e6b\u52a9\u958b\u767c\u8005\u9010\u884c\u8655\u7406\u67e5\u8a62\u7d50\u679c\u3002\u96d6\u7136\u6e38\u6a19\u5728\u67d0\u4e9b\u60c5\u6cc1\u4e0b\u662f\u5fc5\u9700\u7684\uff0c\u4f46\u5728\u4f7f\u7528\u6642\u4e5f\u61c9\u8003\u616e\u5176\u6027\u80fd\u5f71\u97ff\u3002\u5c0d\u65bc\u9700\u8981\u9ad8\u6548\u8655\u7406\u5927\u91cf\u6578\u64da\u7684\u60c5\u6cc1\uff0c\u5efa\u8b70\u512a\u5148\u8003\u616e\u5176\u4ed6\u65b9\u6cd5\uff0c\u5982\u6279\u91cf\u64cd\u4f5c\u6216\u4f7f\u7528\u96c6\u5408\u64cd\u4f5c\u3002<\/p>\n<p>\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u9ad8\u6548\u7684\u6578\u64da\u8655\u7406\u89e3\u6c7a\u65b9\u6848\uff0c\u8003\u616e\u4f7f\u7528<a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a>\u4f86\u652f\u6301\u60a8\u7684\u6578\u64da\u5eab\u9700\u6c42\u3002\u7121\u8ad6\u662f\u904b\u884cSQL\u67e5\u8a62\u9084\u662f\u7ba1\u7406\u6578\u64da\uff0c\u9078\u64c7\u5408\u9069\u7684\u4f3a\u670d\u5668\u90fd\u80fd\u63d0\u5347\u60a8\u7684\u5de5\u4f5c\u6548\u7387\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u63a2\u7d22\u7528SQL\u6e38\u6a19\u904d\u6b77\u5faa\u74b0\u6578\u64da\u7684\u65b9\u6cd5\uff0c\u5b78\u7fd2\u5982\u4f55\u6709\u6548\u8655\u7406\u548c\u64cd\u4f5c\u6578\u64da\u96c6\u4ee5\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-194925","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/194925","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=194925"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/194925\/revisions"}],"predecessor-version":[{"id":194926,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/194925\/revisions\/194926"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=194925"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=194925"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=194925"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}