{"id":194013,"date":"2024-11-13T03:02:18","date_gmt":"2024-11-12T19:02:18","guid":{"rendered":"https:\/\/server.hk\/cnblog\/194013\/"},"modified":"2024-11-13T03:02:19","modified_gmt":"2024-11-12T19:02:19","slug":"%e4%b8%80%e5%80%8b%e5%88%a9%e7%94%a8cte%e9%81%9e%e6%ad%b8%e5%9c%a8%e5%ad%98%e5%84%b2%e9%81%8e%e7%a8%8b%e4%b8%ad%e5%af%a6%e7%8f%be%e7%9c%9f%e5%88%86%e9%a0%81%e7%9a%84%e4%bb%a3%e7%a2%bc%e7%a4%ba","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/194013\/","title":{"rendered":"\u4e00\u500b\u5229\u7528CTE\u905e\u6b78\u5728\u5b58\u5132\u904e\u7a0b\u4e2d\u5be6\u73fe\u771f\u5206\u9801\u7684\u4ee3\u78bc\u793a\u4f8b"},"content":{"rendered":"<h1 id=\"%e5%88%a9%e7%94%a8cte%e9%81%9e%e6%ad%b8%e5%9c%a8%e5%ad%98%e5%84%b2%e9%81%8e%e7%a8%8b%e4%b8%ad%e5%af%a6%e7%8f%be%e7%9c%9f%e5%88%86%e9%a0%81%e7%9a%84%e4%bb%a3%e7%a2%bc%e7%a4%ba%e4%be%8b-ACOWtLLDUd\">\u5229\u7528CTE\u905e\u6b78\u5728\u5b58\u5132\u904e\u7a0b\u4e2d\u5be6\u73fe\u771f\u5206\u9801\u7684\u4ee3\u78bc\u793a\u4f8b<\/h1>\n<p>\u5728\u6578\u64da\u5eab\u7ba1\u7406\u4e2d\uff0c\u5206\u9801\u662f\u4e00\u500b\u5e38\u898b\u7684\u9700\u6c42\uff0c\u7279\u5225\u662f\u5728\u8655\u7406\u5927\u91cf\u6578\u64da\u6642\u3002\u50b3\u7d71\u7684\u5206\u9801\u65b9\u6cd5\u901a\u5e38\u4f9d\u8cf4\u65bcOFFSET\u548cLIMIT\u8a9e\u53e5\uff0c\u4f46\u9019\u4e9b\u65b9\u6cd5\u5728\u8655\u7406\u5927\u6578\u64da\u96c6\u6642\u53ef\u80fd\u6703\u5c0e\u81f4\u6027\u80fd\u554f\u984c\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u5982\u4f55\u5229\u7528\u516c\u7528\u8868\u9054\u5f0f\uff08CTE\uff09\u905e\u6b78\u4f86\u5be6\u73fe\u771f\u5206\u9801\uff0c\u4e26\u63d0\u4f9b\u76f8\u61c9\u7684\u4ee3\u78bc\u793a\u4f8b\u3002<\/p>\n<h2 id=\"%e4%bb%80%e9%ba%bc%e6%98%afcte%e9%81%9e%e6%ad%b8%ef%bc%9f-ACOWtLLDUd\">\u4ec0\u9ebc\u662fCTE\u905e\u6b78\uff1f<\/h2>\n<p>\u516c\u7528\u8868\u9054\u5f0f\uff08Common Table Expression, CTE\uff09\u662f\u4e00\u7a2e\u81e8\u6642\u7d50\u679c\u96c6\uff0c\u53ef\u4ee5\u5728\u4e00\u500bSELECT\u3001INSERT\u3001UPDATE\u6216DELETE\u8a9e\u53e5\u4e2d\u5f15\u7528\u3002CTE\u905e\u6b78\u662f\u4e00\u7a2e\u7279\u6b8a\u7684CTE\uff0c\u5141\u8a31\u67e5\u8a62\u81ea\u8eab\u4ee5\u751f\u6210\u5c64\u6b21\u7d50\u69cb\u7684\u6578\u64da\u3002\u9019\u5728\u8655\u7406\u6a39\u72c0\u7d50\u69cb\u6216\u9700\u8981\u5206\u9801\u7684\u6578\u64da\u6642\u7279\u5225\u6709\u7528\u3002<\/p>\n<h2 id=\"%e7%82%ba%e4%bb%80%e9%ba%bc%e9%81%b8%e6%93%87cte%e9%81%9e%e6%ad%b8%e9%80%b2%e8%a1%8c%e5%88%86%e9%a0%81%ef%bc%9f-ACOWtLLDUd\">\u70ba\u4ec0\u9ebc\u9078\u64c7CTE\u905e\u6b78\u9032\u884c\u5206\u9801\uff1f<\/h2>\n<ul>\n<li><strong>\u6027\u80fd\u512a\u5316\uff1a<\/strong>CTE\u905e\u6b78\u53ef\u4ee5\u6709\u6548\u5730\u8655\u7406\u5927\u6578\u64da\u96c6\uff0c\u907f\u514d\u4e86OFFSET\u548cLIMIT\u5728\u5927\u6578\u64da\u96c6\u4e0a\u7684\u6027\u80fd\u74f6\u9838\u3002<\/li>\n<li><strong>\u9748\u6d3b\u6027\uff1a<\/strong>CTE\u905e\u6b78\u5141\u8a31\u7528\u6236\u6839\u64da\u9700\u8981\u81ea\u5b9a\u7fa9\u67e5\u8a62\u908f\u8f2f\uff0c\u63d0\u4f9b\u66f4\u5927\u7684\u9748\u6d3b\u6027\u3002<\/li>\n<li><strong>\u53ef\u8b80\u6027\uff1a<\/strong>\u4f7f\u7528CTE\u53ef\u4ee5\u4f7f\u67e5\u8a62\u7d50\u69cb\u66f4\u52a0\u6e05\u6670\uff0c\u6613\u65bc\u7dad\u8b77\u548c\u7406\u89e3\u3002<\/li>\n<\/ul>\n<h2 id=\"%e4%bb%a3%e7%a2%bc%e7%a4%ba%e4%be%8b-ACOWtLLDUd\">\u4ee3\u78bc\u793a\u4f8b<\/h2>\n<p>\u4ee5\u4e0b\u662f\u4e00\u500b\u4f7f\u7528CTE\u905e\u6b78\u5be6\u73fe\u771f\u5206\u9801\u7684\u793a\u4f8b\u3002\u5047\u8a2d\u6211\u5011\u6709\u4e00\u500b\u540d\u70ba<code>Products<\/code>\u7684\u8868\uff0c\u5305\u542b\u7522\u54c1\u7684ID\u548c\u540d\u7a31\uff0c\u6211\u5011\u5e0c\u671b\u5be6\u73fe\u5206\u9801\u529f\u80fd\u3002<\/p>\n<pre><code>WITH RecursiveCTE AS (\n    SELECT \n        ProductID, \n        ProductName, \n        ROW_NUMBER() OVER (ORDER BY ProductID) AS RowNum\n    FROM \n        Products\n)\nSELECT \n    ProductID, \n    ProductName \nFROM \n    RecursiveCTE\nWHERE \n    RowNum BETWEEN @StartRow AND @EndRow;\n<\/code><\/pre>\n<p>\u5728\u9019\u6bb5\u4ee3\u78bc\u4e2d\uff0c\u6211\u5011\u9996\u5148\u5b9a\u7fa9\u4e86\u4e00\u500bCTE\uff0c\u8a72CTE\u4f7f\u7528<code>ROW_NUMBER()<\/code>\u51fd\u6578\u70ba\u6bcf\u4e00\u884c\u5206\u914d\u4e00\u500b\u552f\u4e00\u7684\u884c\u865f\u3002\u7136\u5f8c\uff0c\u6211\u5011\u5f9eCTE\u4e2d\u9078\u64c7\u6240\u9700\u7684\u884c\uff0c\u6839\u64da\u50b3\u5165\u7684<code>@StartRow<\/code>\u548c<code>@EndRow<\/code>\u53c3\u6578\u9032\u884c\u7be9\u9078\u3002<\/p>\n<h2 id=\"%e5%a6%82%e4%bd%95%e4%bd%bf%e7%94%a8%e6%ad%a4%e4%bb%a3%e7%a2%bc-ACOWtLLDUd\">\u5982\u4f55\u4f7f\u7528\u6b64\u4ee3\u78bc<\/h2>\n<p>\u8981\u4f7f\u7528\u4e0a\u8ff0\u4ee3\u78bc\uff0c\u60a8\u9700\u8981\u5728\u5b58\u5132\u904e\u7a0b\u4e2d\u5b9a\u7fa9<code>@StartRow<\/code>\u548c<code>@EndRow<\/code>\u53c3\u6578\uff0c\u9019\u4e9b\u53c3\u6578\u5c07\u6c7a\u5b9a\u60a8\u5e0c\u671b\u6aa2\u7d22\u7684\u6578\u64da\u7bc4\u570d\u3002\u4f8b\u5982\uff0c\u5982\u679c\u60a8\u5e0c\u671b\u6aa2\u7d22\u7b2c11\u5230\u7b2c20\u689d\u7522\u54c1\uff0c\u60a8\u53ef\u4ee5\u9019\u6a23\u8a2d\u7f6e\u53c3\u6578\uff1a<\/p>\n<pre><code>DECLARE @StartRow INT = 11;\nDECLARE @EndRow INT = 20;\n<\/code><\/pre>\n<p>\u7136\u5f8c\uff0c\u57f7\u884c\u5305\u542bCTE\u7684\u67e5\u8a62\uff0c\u5373\u53ef\u7372\u5f97\u6240\u9700\u7684\u5206\u9801\u7d50\u679c\u3002<\/p>\n<h2 id=\"%e7%b5%90%e8%ab%96-ACOWtLLDUd\">\u7d50\u8ad6<\/h2>\n<p>\u5229\u7528CTE\u905e\u6b78\u4f86\u5be6\u73fe\u771f\u5206\u9801\u662f\u4e00\u7a2e\u9ad8\u6548\u4e14\u9748\u6d3b\u7684\u89e3\u6c7a\u65b9\u6848\uff0c\u7279\u5225\u662f\u5728\u8655\u7406\u5927\u578b\u6578\u64da\u96c6\u6642\u3002\u901a\u904e\u4f7f\u7528<code>ROW_NUMBER()<\/code>\u51fd\u6578\uff0c\u6211\u5011\u53ef\u4ee5\u8f15\u9b06\u5730\u70ba\u6578\u64da\u5206\u9801\uff0c\u4e26\u63d0\u9ad8\u67e5\u8a62\u7684\u53ef\u8b80\u6027\u548c\u6027\u80fd\u3002<\/p>\n<p>\u5982\u679c\u60a8\u5c0d\u65bc\u6578\u64da\u5eab\u7ba1\u7406\u6216\u5176\u4ed6\u6280\u8853\u554f\u984c\u6709\u9032\u4e00\u6b65\u7684\u9700\u6c42\uff0c\u8003\u616e\u4f7f\u7528<code><a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a><\/code>\u4f86\u652f\u6301\u60a8\u7684\u61c9\u7528\u7a0b\u5e8f\uff0c\u63d0\u4f9b\u7a69\u5b9a\u7684\u6027\u80fd\u548c\u9748\u6d3b\u7684\u8cc7\u6e90\u914d\u7f6e\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u63a2\u7d22\u5982\u4f55\u5728\u5b58\u5132\u904e\u7a0b\u4e2d\u5229\u7528CTE\u905e\u6b78\u5be6\u73fe\u771f\u5206\u9801\u7684\u4ee3\u78bc\u793a\u4f8b\uff0c\u63d0\u5347\u6578\u64da\u67e5\u8a62\u6548\u7387\u8207\u9748\u6d3b\u6027\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-194013","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/194013","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=194013"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/194013\/revisions"}],"predecessor-version":[{"id":194014,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/194013\/revisions\/194014"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=194013"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=194013"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=194013"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}