{"id":162923,"date":"2024-11-04T19:09:17","date_gmt":"2024-11-04T11:09:17","guid":{"rendered":"https:\/\/server.hk\/cnblog\/162923\/"},"modified":"2024-11-04T19:09:19","modified_gmt":"2024-11-04T11:09:19","slug":"%e6%95%99%e6%82%a8%e5%a6%82%e4%bd%95%e9%80%b2%e8%a1%8csql%e6%95%b8%e6%93%9a%e5%88%86%e9%a0%81","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/162923\/","title":{"rendered":"\u6559\u60a8\u5982\u4f55\u9032\u884cSQL\u6578\u64da\u5206\u9801"},"content":{"rendered":"<h1 id=\"%e6%95%99%e6%82%a8%e5%a6%82%e4%bd%95%e9%80%b2%e8%a1%8csql%e6%95%b8%e6%93%9a%e5%88%86%e9%a0%81-nsVRrgtyyZ\">\u6559\u60a8\u5982\u4f55\u9032\u884cSQL\u6578\u64da\u5206\u9801<\/h1>\n<p>\u5728\u73fe\u4ee3\u7684\u61c9\u7528\u7a0b\u5e8f\u4e2d\uff0c\u6578\u64da\u7684\u5c55\u793a\u5f80\u5f80\u9700\u8981\u9032\u884c\u5206\u9801\u8655\u7406\uff0c\u4ee5\u63d0\u9ad8\u7528\u6236\u9ad4\u9a57\u548c\u7cfb\u7d71\u6027\u80fd\u3002\u7576\u6578\u64da\u91cf\u9f90\u5927\u6642\uff0c\u5c07\u6240\u6709\u6578\u64da\u4e00\u6b21\u6027\u986f\u793a\u6703\u5c0e\u81f4\u52a0\u8f09\u6642\u9593\u904e\u9577\uff0c\u5f71\u97ff\u7528\u6236\u7684\u64cd\u4f5c\u3002\u56e0\u6b64\uff0c\u5b78\u6703\u5982\u4f55\u5728SQL\u4e2d\u9032\u884c\u6578\u64da\u5206\u9801\u662f\u975e\u5e38\u91cd\u8981\u7684\u3002\u672c\u6587\u5c07\u4ecb\u7d39SQL\u6578\u64da\u5206\u9801\u7684\u57fa\u672c\u6982\u5ff5\u3001\u5e38\u7528\u65b9\u6cd5\u53ca\u5176\u5be6\u73fe\u793a\u4f8b\u3002<\/p>\n<h2 id=\"%e4%bb%80%e9%ba%bc%e6%98%af%e6%95%b8%e6%93%9a%e5%88%86%e9%a0%81%ef%bc%9f-nsVRrgtyyZ\">\u4ec0\u9ebc\u662f\u6578\u64da\u5206\u9801\uff1f<\/h2>\n<p>\u6578\u64da\u5206\u9801\u662f\u5c07\u67e5\u8a62\u7d50\u679c\u5206\u6210\u591a\u500b\u9801\u9762\u986f\u793a\u7684\u6280\u8853\u3002\u9019\u6a23\u7528\u6236\u53ef\u4ee5\u9010\u9801\u67e5\u770b\u6578\u64da\uff0c\u800c\u4e0d\u662f\u4e00\u6b21\u6027\u52a0\u8f09\u6240\u6709\u6578\u64da\u3002\u5206\u9801\u4e0d\u50c5\u80fd\u63d0\u9ad8\u6027\u80fd\uff0c\u9084\u80fd\u6539\u5584\u7528\u6236\u7684\u700f\u89bd\u9ad4\u9a57\u3002\u901a\u5e38\uff0c\u5206\u9801\u6703\u6d89\u53ca\u5230\u5169\u500b\u4e3b\u8981\u53c3\u6578\uff1a\u7576\u524d\u9801\u78bc\u548c\u6bcf\u9801\u986f\u793a\u7684\u8a18\u9304\u6578\u3002<\/p>\n<h2 id=\"sql%e4%b8%ad%e7%9a%84%e5%88%86%e9%a0%81%e6%96%b9%e6%b3%95-nsVRrgtyyZ\">SQL\u4e2d\u7684\u5206\u9801\u65b9\u6cd5<\/h2>\n<p>\u5728SQL\u4e2d\uff0c\u5be6\u73fe\u6578\u64da\u5206\u9801\u7684\u65b9\u5f0f\u4e3b\u8981\u6709\u5169\u7a2e\uff1a\u4f7f\u7528LIMIT\u548cOFFSET\u5b50\u53e5\uff0c\u6216\u4f7f\u7528ROW_NUMBER()\u51fd\u6578\u3002\u4ee5\u4e0b\u5c07\u8a73\u7d30\u4ecb\u7d39\u9019\u5169\u7a2e\u65b9\u6cd5\u3002<\/p>\n<h3 id=\"1-%e4%bd%bf%e7%94%a8limit%e5%92%8coffset-nsVRrgtyyZ\">1. \u4f7f\u7528LIMIT\u548cOFFSET<\/h3>\n<p>\u5728\u8a31\u591aSQL\u6578\u64da\u5eab\u4e2d\uff08\u5982MySQL\u548cPostgreSQL\uff09\uff0c\u53ef\u4ee5\u4f7f\u7528LIMIT\u548cOFFSET\u4f86\u5be6\u73fe\u5206\u9801\u3002LIMIT\u6307\u5b9a\u8981\u8fd4\u56de\u7684\u8a18\u9304\u6578\uff0c\u800cOFFSET\u5247\u6307\u5b9a\u8981\u8df3\u904e\u7684\u8a18\u9304\u6578\u3002<\/p>\n<pre><code>SELECT * FROM \u8868\u540d\nORDER BY \u5217\u540d\nLIMIT \u6bcf\u9801\u986f\u793a\u7684\u8a18\u9304\u6578 OFFSET (\u7576\u524d\u9801\u78bc - 1) * \u6bcf\u9801\u986f\u793a\u7684\u8a18\u9304\u6578;<\/code><\/pre>\n<p>\u4f8b\u5982\uff0c\u5982\u679c\u6211\u5011\u60f3\u8981\u986f\u793a\u7b2c2\u9801\uff0c\u6bcf\u9801\u986f\u793a10\u689d\u8a18\u9304\uff0c\u5247\u53ef\u4ee5\u9019\u6a23\u5beb\uff1a<\/p>\n<pre><code>SELECT * FROM users\nORDER BY id\nLIMIT 10 OFFSET 10;<\/code><\/pre>\n<h3 id=\"2-%e4%bd%bf%e7%94%a8row_number%e5%87%bd%e6%95%b8-nsVRrgtyyZ\">2. \u4f7f\u7528ROW_NUMBER()\u51fd\u6578<\/h3>\n<p>\u5728SQL Server\u548cOracle\u7b49\u6578\u64da\u5eab\u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528ROW_NUMBER()\u51fd\u6578\u4f86\u5be6\u73fe\u5206\u9801\u3002\u9019\u7a2e\u65b9\u6cd5\u901a\u5e38\u9700\u8981\u4f7f\u7528CTE\uff08\u516c\u5171\u8868\u8868\u9054\u5f0f\uff09\u6216\u5b50\u67e5\u8a62\u3002<\/p>\n<pre><code>WITH CTE AS (\n    SELECT *, ROW_NUMBER() OVER (ORDER BY \u5217\u540d) AS RowNum\n    FROM \u8868\u540d\n)\nSELECT *\nFROM CTE\nWHERE RowNum BETWEEN (\u7576\u524d\u9801\u78bc - 1) * \u6bcf\u9801\u986f\u793a\u7684\u8a18\u9304\u6578 + 1 AND \u7576\u524d\u9801\u78bc * \u6bcf\u9801\u986f\u793a\u7684\u8a18\u9304\u6578;<\/code><\/pre>\n<p>\u4f8b\u5982\uff0c\u986f\u793a\u7b2c2\u9801\u7684\u8a18\u9304\uff0c\u6bcf\u980110\u689d\uff0c\u53ef\u4ee5\u9019\u6a23\u5beb\uff1a<\/p>\n<pre><code>WITH CTE AS (\n    SELECT *, ROW_NUMBER() OVER (ORDER BY id) AS RowNum\n    FROM users\n)\nSELECT *\nFROM CTE\nWHERE RowNum BETWEEN 11 AND 20;<\/code><\/pre>\n<h2 id=\"%e8%80%83%e6%85%ae%e5%9b%a0%e7%b4%a0-nsVRrgtyyZ\">\u8003\u616e\u56e0\u7d20<\/h2>\n<p>\u5728\u5be6\u73fe\u6578\u64da\u5206\u9801\u6642\uff0c\u6709\u5e7e\u500b\u56e0\u7d20\u9700\u8981\u8003\u616e\uff1a<\/p>\n<ul>\n<li><strong>\u6027\u80fd\uff1a<\/strong>\u5c0d\u65bc\u5927\u578b\u6578\u64da\u96c6\uff0c\u4f7f\u7528OFFSET\u53ef\u80fd\u6703\u5c0e\u81f4\u6027\u80fd\u4e0b\u964d\uff0c\u56e0\u70ba\u6578\u64da\u5eab\u9700\u8981\u8df3\u904e\u5927\u91cf\u8a18\u9304\u3002<\/li>\n<li><strong>\u6392\u5e8f\uff1a<\/strong>\u78ba\u4fdd\u5728\u5206\u9801\u67e5\u8a62\u4e2d\u4f7f\u7528ORDER BY\u5b50\u53e5\uff0c\u4ee5\u4fdd\u6301\u6578\u64da\u7684\u4e00\u81f4\u6027\u548c\u53ef\u9810\u6e2c\u6027\u3002<\/li>\n<li><strong>\u7528\u6236\u9ad4\u9a57\uff1a<\/strong>\u8003\u616e\u63d0\u4f9b\u5feb\u901f\u5c0e\u822a\u7684\u529f\u80fd\uff0c\u4f8b\u5982\u201c\u4e0a\u4e00\u9801\u201d\u548c\u201c\u4e0b\u4e00\u9801\u201d\u6309\u9215\uff0c\u6216\u76f4\u63a5\u8df3\u8f49\u5230\u7279\u5b9a\u9801\u78bc\u7684\u9078\u9805\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b8%bd%e7%b5%90-nsVRrgtyyZ\">\u7e3d\u7d50<\/h2>\n<p>\u6578\u64da\u5206\u9801\u662f\u8655\u7406\u5927\u91cf\u6578\u64da\u6642\u4e0d\u53ef\u6216\u7f3a\u7684\u6280\u8853\u3002\u901a\u904e\u4f7f\u7528LIMIT\u548cOFFSET\u6216ROW_NUMBER()\u51fd\u6578\uff0c\u958b\u767c\u8005\u53ef\u4ee5\u6709\u6548\u5730\u5be6\u73fe\u6578\u64da\u7684\u5206\u9801\u986f\u793a\uff0c\u5f9e\u800c\u63d0\u5347\u7528\u6236\u9ad4\u9a57\u548c\u7cfb\u7d71\u6027\u80fd\u3002\u5c0d\u65bc\u9700\u8981\u9ad8\u6548\u6578\u64da\u8655\u7406\u7684\u61c9\u7528\uff0c\u9078\u64c7\u5408\u9069\u7684\u6578\u64da\u5eab\u548c\u914d\u7f6e\u662f\u81f3\u95dc\u91cd\u8981\u7684\u3002\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u9ad8\u6548\u7684\u89e3\u6c7a\u65b9\u6848\uff0c\u53ef\u4ee5\u8003\u616e\u4f7f\u7528<a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a>\u6216<a href=\"https:\/\/server.hk\">\u9999\u6e2f\u4f3a\u670d\u5668<\/a>\u4f86\u652f\u6301\u60a8\u7684\u61c9\u7528\u7a0b\u5e8f\u9700\u6c42\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5b78\u7fd2\u5982\u4f55\u5728SQL\u4e2d\u5be6\u73fe\u6578\u64da\u5206\u9801\uff0c\u63d0\u5347\u67e5\u8a62\u6548\u7387\uff0c\u512a\u5316\u6578\u64da\u986f\u793a\uff0c\u8b93\u60a8\u7684\u61c9\u7528\u66f4\u6d41\u66a2\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-162923","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/162923","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=162923"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/162923\/revisions"}],"predecessor-version":[{"id":162924,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/162923\/revisions\/162924"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=162923"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=162923"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=162923"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}