{"id":143753,"date":"2024-11-01T00:57:24","date_gmt":"2024-10-31T16:57:24","guid":{"rendered":"https:\/\/server.hk\/cnblog\/143753\/"},"modified":"2024-11-01T00:57:25","modified_gmt":"2024-10-31T16:57:25","slug":"sql-%e6%9f%a5%e8%a9%a2%e5%88%86%e9%a0%81","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/143753\/","title":{"rendered":"SQL \u67e5\u8a62\u5206\u9801"},"content":{"rendered":"<h1 id=\"sql-%e6%9f%a5%e8%a9%a2%e5%88%86%e9%a0%81-RBKOySOzqV\">SQL \u67e5\u8a62\u5206\u9801<\/h1>\n<p>\u5728\u73fe\u4ee3\u7684\u61c9\u7528\u7a0b\u5f0f\u4e2d\uff0c\u6578\u64da\u7684\u7ba1\u7406\u548c\u986f\u793a\u662f\u81f3\u95dc\u91cd\u8981\u7684\u3002\u7576\u6578\u64da\u91cf\u9f90\u5927\u6642\uff0c\u5982\u4f55\u6709\u6548\u5730\u67e5\u8a62\u548c\u986f\u793a\u9019\u4e9b\u6578\u64da\u6210\u70ba\u4e86\u4e00\u500b\u6311\u6230\u3002\u9019\u6642\uff0cSQL \u67e5\u8a62\u5206\u9801\u6280\u8853\u4fbf\u61c9\u904b\u800c\u751f\u3002\u672c\u6587\u5c07\u6df1\u5165\u63a2\u8a0e SQL \u67e5\u8a62\u5206\u9801\u7684\u6982\u5ff5\u3001\u5be6\u73fe\u65b9\u6cd5\u53ca\u5176\u5728\u5be6\u969b\u61c9\u7528\u4e2d\u7684\u91cd\u8981\u6027\u3002<\/p>\n<h2 id=\"%e4%bb%80%e9%ba%bc%e6%98%af-sql-%e6%9f%a5%e8%a9%a2%e5%88%86%e9%a0%81%ef%bc%9f-RBKOySOzqV\">\u4ec0\u9ebc\u662f SQL \u67e5\u8a62\u5206\u9801\uff1f<\/h2>\n<p>SQL \u67e5\u8a62\u5206\u9801\u662f\u6307\u5728\u67e5\u8a62\u6578\u64da\u6642\uff0c\u5c07\u7d50\u679c\u96c6\u5206\u6210\u591a\u500b\u9801\u9762\uff0c\u4ee5\u4fbf\u7528\u6236\u53ef\u4ee5\u9010\u9801\u67e5\u770b\u6578\u64da\u3002\u9019\u7a2e\u65b9\u6cd5\u4e0d\u50c5\u63d0\u9ad8\u4e86\u6578\u64da\u7684\u53ef\u8b80\u6027\uff0c\u9084\u80fd\u6e1b\u5c11\u4e00\u6b21\u6027\u52a0\u8f09\u5927\u91cf\u6578\u64da\u6240\u5e36\u4f86\u7684\u6027\u80fd\u554f\u984c\u3002\u5206\u9801\u67e5\u8a62\u901a\u5e38\u7528\u65bc\u986f\u793a\u5217\u8868\u3001\u5831\u544a\u6216\u4efb\u4f55\u9700\u8981\u986f\u793a\u5927\u91cf\u6578\u64da\u7684\u5834\u666f\u3002<\/p>\n<h2 id=\"%e7%82%ba%e4%bb%80%e9%ba%bc%e9%9c%80%e8%a6%81%e5%88%86%e9%a0%81%ef%bc%9f-RBKOySOzqV\">\u70ba\u4ec0\u9ebc\u9700\u8981\u5206\u9801\uff1f<\/h2>\n<ul>\n<li><strong>\u6027\u80fd\u512a\u5316\uff1a<\/strong>\u7576\u6578\u64da\u91cf\u9f90\u5927\u6642\uff0c\u4e00\u6b21\u6027\u52a0\u8f09\u6240\u6709\u6578\u64da\u6703\u5c0e\u81f4\u7cfb\u7d71\u6027\u80fd\u4e0b\u964d\u3002\u5206\u9801\u53ef\u4ee5\u6e1b\u5c11\u6bcf\u6b21\u67e5\u8a62\u7684\u6578\u64da\u91cf\uff0c\u5f9e\u800c\u63d0\u9ad8\u97ff\u61c9\u901f\u5ea6\u3002<\/li>\n<li><strong>\u7528\u6236\u9ad4\u9a57\uff1a<\/strong>\u7528\u6236\u901a\u5e38\u4e0d\u9700\u8981\u67e5\u770b\u6240\u6709\u6578\u64da\uff0c\u5206\u9801\u53ef\u4ee5\u8b93\u7528\u6236\u66f4\u65b9\u4fbf\u5730\u700f\u89bd\u548c\u67e5\u627e\u6240\u9700\u7684\u4fe1\u606f\u3002<\/li>\n<li><strong>\u8cc7\u6e90\u7ba1\u7406\uff1a<\/strong>\u5206\u9801\u67e5\u8a62\u53ef\u4ee5\u6709\u6548\u7ba1\u7406\u4f3a\u670d\u5668\u8cc7\u6e90\uff0c\u6e1b\u5c11\u5167\u5b58\u548c\u5e36\u5bec\u7684\u6d88\u8017\u3002<\/li>\n<\/ul>\n<h2 id=\"%e5%a6%82%e4%bd%95%e5%af%a6%e7%8f%be-sql-%e6%9f%a5%e8%a9%a2%e5%88%86%e9%a0%81%ef%bc%9f-RBKOySOzqV\">\u5982\u4f55\u5be6\u73fe SQL \u67e5\u8a62\u5206\u9801\uff1f<\/h2>\n<p>\u5728 SQL \u4e2d\uff0c\u5be6\u73fe\u5206\u9801\u67e5\u8a62\u7684\u65b9\u6cd5\u53d6\u6c7a\u65bc\u6240\u4f7f\u7528\u7684\u6578\u64da\u5eab\u7cfb\u7d71\u3002\u4ee5\u4e0b\u662f\u5e7e\u7a2e\u5e38\u898b\u7684\u5be6\u73fe\u65b9\u5f0f\uff1a<\/p>\n<h3 id=\"1-%e4%bd%bf%e7%94%a8-offset-%e5%92%8c-fetch-RBKOySOzqV\">1. \u4f7f\u7528 OFFSET \u548c FETCH<\/h3>\n<p>\u5728 SQL Server \u548c PostgreSQL \u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528 OFFSET \u548c FETCH \u4f86\u5be6\u73fe\u5206\u9801\u3002\u4f8b\u5982\uff1a<\/p>\n<pre><code>SELECT * FROM Products\nORDER BY ProductID\nOFFSET 10 ROWS\nFETCH NEXT 10 ROWS ONLY;<\/code><\/pre>\n<p>\u4e0a\u8ff0\u67e5\u8a62\u5c07\u8df3\u904e\u524d 10 \u689d\u8a18\u9304\uff0c\u4e26\u8fd4\u56de\u63a5\u4e0b\u4f86\u7684 10 \u689d\u8a18\u9304\u3002<\/p>\n<h3 id=\"2-%e4%bd%bf%e7%94%a8-limit-%e5%92%8c-offset-RBKOySOzqV\">2. \u4f7f\u7528 LIMIT \u548c OFFSET<\/h3>\n<p>\u5728 MySQL \u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528 LIMIT \u548c OFFSET \u4f86\u5be6\u73fe\u5206\u9801\u3002\u4f8b\u5982\uff1a<\/p>\n<pre><code>SELECT * FROM Products\nLIMIT 10 OFFSET 10;<\/code><\/pre>\n<p>\u9019\u5c07\u8fd4\u56de\u7b2c 11 \u5230\u7b2c 20 \u689d\u8a18\u9304\u3002<\/p>\n<h3 id=\"3-%e4%bd%bf%e7%94%a8-row_number-%e5%87%bd%e6%95%b8-RBKOySOzqV\">3. \u4f7f\u7528 ROW_NUMBER() \u51fd\u6578<\/h3>\n<p>\u5728 SQL Server \u4e2d\uff0c\u9084\u53ef\u4ee5\u4f7f\u7528 ROW_NUMBER() \u51fd\u6578\u4f86\u5be6\u73fe\u5206\u9801\u3002\u4f8b\u5982\uff1a<\/p>\n<pre><code>WITH ProductList AS (\n    SELECT *, ROW_NUMBER() OVER (ORDER BY ProductID) AS RowNum\n    FROM Products\n)\nSELECT * FROM ProductList\nWHERE RowNum BETWEEN 11 AND 20;<\/code><\/pre>\n<p>\u9019\u5c07\u8fd4\u56de\u7b2c 11 \u5230\u7b2c 20 \u689d\u8a18\u9304\uff0c\u4f7f\u7528\u4e86 CTE\uff08\u516c\u5171\u8868\u9054\u5f0f\uff09\u4f86\u751f\u6210\u884c\u865f\u3002<\/p>\n<h2 id=\"%e5%88%86%e9%a0%81%e6%9f%a5%e8%a9%a2%e7%9a%84%e6%9c%80%e4%bd%b3%e5%af%a6%e8%b8%90-RBKOySOzqV\">\u5206\u9801\u67e5\u8a62\u7684\u6700\u4f73\u5be6\u8e10<\/h2>\n<ul>\n<li><strong>\u9078\u64c7\u5408\u9069\u7684\u6392\u5e8f\uff1a<\/strong>\u5728\u9032\u884c\u5206\u9801\u67e5\u8a62\u6642\uff0c\u5fc5\u9808\u78ba\u4fdd\u7d50\u679c\u96c6\u6709\u4e00\u500b\u7a69\u5b9a\u7684\u6392\u5e8f\uff0c\u9019\u6a23\u624d\u80fd\u4fdd\u8b49\u6bcf\u6b21\u67e5\u8a62\u7684\u7d50\u679c\u4e00\u81f4\u3002<\/li>\n<li><strong>\u907f\u514d\u4f7f\u7528 OFFSET \u5927\u65bc\u6578\u64da\u96c6\u5927\u5c0f\uff1a<\/strong>\u7576 OFFSET \u7684\u503c\u8d85\u904e\u6578\u64da\u96c6\u7684\u5927\u5c0f\u6642\uff0c\u67e5\u8a62\u5c07\u8fd4\u56de\u7a7a\u7d50\u679c\uff0c\u9019\u53ef\u80fd\u6703\u5f71\u97ff\u7528\u6236\u9ad4\u9a57\u3002<\/li>\n<li><strong>\u8003\u616e\u4f7f\u7528\u7d22\u5f15\uff1a<\/strong>\u70ba\u4e86\u63d0\u9ad8\u67e5\u8a62\u6027\u80fd\uff0c\u61c9\u8003\u616e\u5728\u5206\u9801\u67e5\u8a62\u4e2d\u4f7f\u7528\u7d22\u5f15\uff0c\u7279\u5225\u662f\u5728\u5927\u578b\u6578\u64da\u96c6\u4e0a\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b8%bd%e7%b5%90-RBKOySOzqV\">\u7e3d\u7d50<\/h2>\n<p>SQL \u67e5\u8a62\u5206\u9801\u662f\u4e00\u7a2e\u6709\u6548\u7684\u6578\u64da\u7ba1\u7406\u6280\u8853\uff0c\u80fd\u5920\u63d0\u9ad8\u6027\u80fd\u548c\u7528\u6236\u9ad4\u9a57\u3002\u901a\u904e\u4f7f\u7528\u4e0d\u540c\u7684 SQL \u8a9e\u6cd5\uff0c\u958b\u767c\u8005\u53ef\u4ee5\u6839\u64da\u9700\u6c42\u9748\u6d3b\u5730\u5be6\u73fe\u5206\u9801\u529f\u80fd\u3002\u7121\u8ad6\u662f\u5728\u7db2\u7ad9\u3001\u61c9\u7528\u7a0b\u5f0f\u9084\u662f\u6578\u64da\u5831\u544a\u4e2d\uff0c\u5206\u9801\u67e5\u8a62\u90fd\u662f\u4e00\u500b\u4e0d\u53ef\u6216\u7f3a\u7684\u5de5\u5177\u3002<\/p>\n<p>\u5982\u679c\u60a8\u5c0d\u65bc <a href=\"https:\/\/server.hk\">\u9999\u6e2f VPS<\/a> \u670d\u52d9\u6709\u8208\u8da3\uff0c\u6216\u60f3\u4e86\u89e3\u66f4\u591a\u95dc\u65bc <a href=\"https:\/\/server.hk\">\u4f3a\u670d\u5668<\/a> \u7684\u8cc7\u8a0a\uff0c\u6b61\u8fce\u8a2a\u554f\u6211\u5011\u7684\u7db2\u7ad9\u4ee5\u7372\u53d6\u66f4\u591a\u8a73\u7d30\u8cc7\u6599\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4e86\u89e3 SQL \u67e5\u8a62\u5206\u9801\u6280\u8853\uff0c\u63d0\u5347\u6578\u64da\u6aa2\u7d22\u6548\u7387\uff0c\u8f15\u9b06\u7ba1\u7406\u5927\u91cf\u6578\u64da\uff0c\u512a\u5316\u7528\u6236\u9ad4\u9a57\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-143753","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/143753","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=143753"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/143753\/revisions"}],"predecessor-version":[{"id":143754,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/143753\/revisions\/143754"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=143753"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=143753"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=143753"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}