{"id":95554,"date":"2024-10-20T02:01:17","date_gmt":"2024-10-19T18:01:17","guid":{"rendered":"https:\/\/server.hk\/cnblog\/95554\/"},"modified":"2024-10-20T02:01:17","modified_gmt":"2024-10-19T18:01:17","slug":"oracle%e6%95%b8%e6%93%9a%e5%ba%ab%e6%9f%a5%e8%a9%a2%e9%ab%98%e6%95%88%e5%88%86%e9%a0%81","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/95554\/","title":{"rendered":"Oracle\u6578\u64da\u5eab\u67e5\u8a62\u9ad8\u6548\u5206\u9801"},"content":{"rendered":"<h1 id=\"oracle%e6%95%b8%e6%93%9a%e5%ba%ab%e6%9f%a5%e8%a9%a2%e9%ab%98%e6%95%88%e5%88%86%e9%a0%81-IXLDaTcFyw\">Oracle\u6578\u64da\u5eab\u67e5\u8a62\u9ad8\u6548\u5206\u9801<\/h1>\n<p>\u5728\u73fe\u4ee3\u61c9\u7528\u7a0b\u5f0f\u4e2d\uff0c\u6578\u64da\u7684\u5c55\u793a\u5f80\u5f80\u9700\u8981\u5206\u9801\u8655\u7406\uff0c\u4ee5\u63d0\u9ad8\u7528\u6236\u9ad4\u9a57\u548c\u7cfb\u7d71\u6027\u80fd\u3002Oracle\u6578\u64da\u5eab\u63d0\u4f9b\u4e86\u591a\u7a2e\u65b9\u6cd5\u4f86\u5be6\u73fe\u9ad8\u6548\u7684\u67e5\u8a62\u5206\u9801\uff0c\u672c\u6587\u5c07\u63a2\u8a0e\u5e7e\u7a2e\u5e38\u898b\u7684\u6280\u8853\u548c\u6700\u4f73\u5be6\u8e10\u3002<\/p>\n<h2 id=\"%e7%82%ba%e4%bd%95%e9%9c%80%e8%a6%81%e5%88%86%e9%a0%81-IXLDaTcFyw\">\u70ba\u4f55\u9700\u8981\u5206\u9801<\/h2>\n<p>\u96a8\u8457\u6578\u64da\u91cf\u7684\u589e\u9577\uff0c\u5c07\u6240\u6709\u6578\u64da\u4e00\u6b21\u6027\u52a0\u8f09\u5230\u7528\u6236\u754c\u9762\u4e2d\u6703\u5c0e\u81f4\u6027\u80fd\u4e0b\u964d\u548c\u7528\u6236\u9ad4\u9a57\u4e0d\u4f73\u3002\u5206\u9801\u53ef\u4ee5\u6709\u6548\u5730\u6e1b\u5c11\u6bcf\u6b21\u67e5\u8a62\u6240\u9700\u8655\u7406\u7684\u6578\u64da\u91cf\uff0c\u5f9e\u800c\u63d0\u9ad8\u67e5\u8a62\u901f\u5ea6\u548c\u97ff\u61c9\u6642\u9593\u3002<\/p>\n<h2 id=\"oracle%e4%b8%ad%e7%9a%84%e5%88%86%e9%a0%81%e6%8a%80%e8%a1%93-IXLDaTcFyw\">Oracle\u4e2d\u7684\u5206\u9801\u6280\u8853<\/h2>\n<p>\u5728Oracle\u6578\u64da\u5eab\u4e2d\uff0c\u5be6\u73fe\u5206\u9801\u7684\u4e3b\u8981\u65b9\u6cd5\u6709\u4ee5\u4e0b\u5e7e\u7a2e\uff1a<\/p>\n<h3 id=\"1-%e4%bd%bf%e7%94%a8rownum-IXLDaTcFyw\">1. \u4f7f\u7528ROWNUM<\/h3>\n<p>ROWNUM\u662f\u4e00\u500b\u865b\u64ec\u5217\uff0c\u8868\u793a\u67e5\u8a62\u7d50\u679c\u4e2d\u7684\u884c\u865f\u3002\u53ef\u4ee5\u901a\u904e\u5b50\u67e5\u8a62\u4f86\u5be6\u73fe\u5206\u9801\uff1a<\/p>\n<pre><code>SELECT * FROM (\n    SELECT a.*, ROWNUM rnum FROM (\n        SELECT * FROM your_table ORDER BY your_column\n    ) a WHERE ROWNUM &lt;= :end_row\n) WHERE rnum &gt; :start_row;<\/code><\/pre>\n<p>\u5728\u9019\u500b\u67e5\u8a62\u4e2d\uff0c`:start_row`\u548c`:end_row`\u662f\u7528\u6236\u6307\u5b9a\u7684\u884c\u7bc4\u570d\u3002\u9019\u7a2e\u65b9\u6cd5\u7c21\u55ae\u6613\u7528\uff0c\u4f46\u5728\u8655\u7406\u5927\u91cf\u6578\u64da\u6642\u6027\u80fd\u53ef\u80fd\u6703\u53d7\u5230\u5f71\u97ff\u3002<\/p>\n<h3 id=\"2-%e4%bd%bf%e7%94%a8offset%e5%92%8cfetch-IXLDaTcFyw\">2. \u4f7f\u7528OFFSET\u548cFETCH<\/h3>\n<p>\u5f9eOracle 12c\u958b\u59cb\uff0c\u652f\u6301OFFSET\u548cFETCH\u8a9e\u53e5\uff0c\u9019\u4f7f\u5f97\u5206\u9801\u67e5\u8a62\u66f4\u52a0\u76f4\u89c0\uff1a<\/p>\n<pre><code>SELECT * FROM your_table\nORDER BY your_column\nOFFSET :start_row ROWS\nFETCH NEXT :page_size ROWS ONLY;<\/code><\/pre>\n<p>\u9019\u7a2e\u65b9\u6cd5\u7684\u512a\u9ede\u5728\u65bc\u8a9e\u6cd5\u7c21\u6f54\uff0c\u4e26\u4e14\u80fd\u5920\u66f4\u597d\u5730\u8655\u7406\u5927\u6578\u64da\u96c6\u3002<\/p>\n<h3 id=\"3-%e4%bd%bf%e7%94%a8%e5%88%86%e6%9e%90%e5%87%bd%e6%95%b8-IXLDaTcFyw\">3. \u4f7f\u7528\u5206\u6790\u51fd\u6578<\/h3>\n<p>\u5206\u6790\u51fd\u6578\u5982ROW_NUMBER()\u4e5f\u53ef\u4ee5\u7528\u4f86\u5be6\u73fe\u5206\u9801\uff1a<\/p>\n<pre><code>SELECT * FROM (\n    SELECT your_table.*, ROW_NUMBER() OVER (ORDER BY your_column) AS row_num\n    FROM your_table\n) WHERE row_num BETWEEN :start_row AND :end_row;<\/code><\/pre>\n<p>\u9019\u7a2e\u65b9\u6cd5\u7684\u9748\u6d3b\u6027\u8f03\u9ad8\uff0c\u80fd\u5920\u6839\u64da\u4e0d\u540c\u7684\u6392\u5e8f\u689d\u4ef6\u9032\u884c\u5206\u9801\u3002<\/p>\n<h2 id=\"%e6%9c%80%e4%bd%b3%e5%af%a6%e8%b8%90-IXLDaTcFyw\">\u6700\u4f73\u5be6\u8e10<\/h2>\n<ul>\n<li><strong>\u7d22\u5f15\u512a\u5316\uff1a<\/strong>\u78ba\u4fdd\u67e5\u8a62\u4e2d\u4f7f\u7528\u7684\u5217\u6709\u9069\u7576\u7684\u7d22\u5f15\uff0c\u4ee5\u63d0\u9ad8\u67e5\u8a62\u6027\u80fd\u3002<\/li>\n<li><strong>\u9650\u5236\u8fd4\u56de\u5217\uff1a<\/strong>\u53ea\u9078\u64c7\u5fc5\u8981\u7684\u5217\uff0c\u6e1b\u5c11\u6578\u64da\u50b3\u8f38\u91cf\u3002<\/li>\n<li><strong>\u4f7f\u7528\u5408\u9069\u7684\u6392\u5e8f\uff1a<\/strong>\u5728\u5206\u9801\u67e5\u8a62\u4e2d\uff0c\u6392\u5e8f\u662f\u5fc5\u4e0d\u53ef\u5c11\u7684\uff0c\u9078\u64c7\u5408\u9069\u7684\u6392\u5e8f\u5217\u53ef\u4ee5\u63d0\u9ad8\u67e5\u8a62\u6548\u7387\u3002<\/li>\n<li><strong>\u8003\u616e\u7de9\u5b58\uff1a<\/strong>\u5c0d\u65bc\u983b\u7e41\u67e5\u8a62\u7684\u6578\u64da\uff0c\u53ef\u4ee5\u8003\u616e\u4f7f\u7528\u7de9\u5b58\u6280\u8853\u4f86\u6e1b\u5c11\u6578\u64da\u5eab\u7684\u8ca0\u64d4\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b5%90%e8%ab%96-IXLDaTcFyw\">\u7d50\u8ad6<\/h2>\n<p>\u9ad8\u6548\u7684\u5206\u9801\u67e5\u8a62\u5c0d\u65bc\u63d0\u5347\u7528\u6236\u9ad4\u9a57\u548c\u7cfb\u7d71\u6027\u80fd\u81f3\u95dc\u91cd\u8981\u3002Oracle\u6578\u64da\u5eab\u63d0\u4f9b\u4e86\u591a\u7a2e\u65b9\u6cd5\u4f86\u5be6\u73fe\u5206\u9801\uff0c\u958b\u767c\u8005\u53ef\u4ee5\u6839\u64da\u5177\u9ad4\u9700\u6c42\u9078\u64c7\u5408\u9069\u7684\u6280\u8853\u3002\u7121\u8ad6\u662f\u4f7f\u7528ROWNUM\u3001OFFSET\u548cFETCH\uff0c\u9084\u662f\u5206\u6790\u51fd\u6578\uff0c\u7406\u89e3\u5176\u80cc\u5f8c\u7684\u539f\u7406\u548c\u6700\u4f73\u5be6\u8e10\u5c07\u6709\u52a9\u65bc\u958b\u767c\u51fa\u66f4\u9ad8\u6548\u7684\u61c9\u7528\u7a0b\u5f0f\u3002<\/p>\n<p>\u5982\u9700\u4e86\u89e3\u66f4\u591a\u95dc\u65bc<code><a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a><\/code>\u548c<code><a href=\"https:\/\/server.hk\">\u96f2\u4f3a\u670d\u5668<\/a><\/code>\u7684\u8cc7\u8a0a\uff0c\u8acb\u8a2a\u554f\u6211\u5011\u7684\u7db2\u7ad9\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u63a2\u7d22Oracle\u6578\u64da\u5eab\u67e5\u8a62\u7684\u9ad8\u6548\u5206\u9801\u6280\u8853\uff0c\u63d0\u5347\u6578\u64da\u6aa2\u7d22\u901f\u5ea6\uff0c\u512a\u5316\u6027\u80fd\uff0c\u5be6\u73fe\u6d41\u66a2\u7684\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-95554","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/95554","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=95554"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/95554\/revisions"}],"predecessor-version":[{"id":95555,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/95554\/revisions\/95555"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=95554"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=95554"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=95554"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}