{"id":94596,"date":"2024-10-19T19:34:19","date_gmt":"2024-10-19T11:34:19","guid":{"rendered":"https:\/\/server.hk\/cnblog\/94596\/"},"modified":"2024-10-19T19:34:19","modified_gmt":"2024-10-19T11:34:19","slug":"oracle-%e5%88%86%e9%a0%81%e5%92%8c%e6%8e%92%e5%ba%8f%e5%8a%9f%e8%83%bd%e5%9c%a8%e6%95%b8%e6%93%9a%e5%ba%ab%e4%b8%ad%e5%a6%82%e4%bd%95%e5%af%a6%e7%8f%be%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/94596\/","title":{"rendered":"Oracle \u5206\u9801\u548c\u6392\u5e8f\u529f\u80fd\u5728\u6578\u64da\u5eab\u4e2d\u5982\u4f55\u5be6\u73fe\uff1f"},"content":{"rendered":"

Oracle \u5206\u9801\u548c\u6392\u5e8f\u529f\u80fd\u5728\u6578\u64da\u5eab\u4e2d\u5982\u4f55\u5be6\u73fe\uff1f<\/h1>\n

\u5728\u73fe\u4ee3\u6578\u64da\u5eab\u7ba1\u7406\u7cfb\u7d71\u4e2d\uff0c\u5206\u9801\u548c\u6392\u5e8f\u529f\u80fd\u662f\u975e\u5e38\u91cd\u8981\u7684\u7279\u6027\uff0c\u5c24\u5176\u662f\u5728\u8655\u7406\u5927\u91cf\u6578\u64da\u6642\u3002Oracle \u6578\u64da\u5eab\u63d0\u4f9b\u4e86\u591a\u7a2e\u65b9\u6cd5\u4f86\u5be6\u73fe\u9019\u4e9b\u529f\u80fd\uff0c\u672c\u6587\u5c07\u6df1\u5165\u63a2\u8a0e\u5982\u4f55\u5728 Oracle \u6578\u64da\u5eab\u4e2d\u6709\u6548\u5730\u5be6\u73fe\u5206\u9801\u548c\u6392\u5e8f\u3002<\/p>\n

\u5206\u9801\u7684\u6982\u5ff5<\/h2>\n

\u5206\u9801\u662f\u6307\u5c07\u67e5\u8a62\u7d50\u679c\u5206\u6210\u591a\u500b\u9801\u9762\uff0c\u4ee5\u4fbf\u7528\u6236\u53ef\u4ee5\u9010\u6b65\u67e5\u770b\u6578\u64da\u3002\u9019\u5728\u986f\u793a\u5927\u91cf\u6578\u64da\u6642\u7279\u5225\u6709\u7528\uff0c\u56e0\u70ba\u5b83\u53ef\u4ee5\u63d0\u9ad8\u7528\u6236\u9ad4\u9a57\u4e26\u6e1b\u5c11\u4e00\u6b21\u6027\u52a0\u8f09\u7684\u6578\u64da\u91cf\u3002<\/p>\n

Oracle \u4e2d\u7684\u5206\u9801\u5be6\u73fe<\/h2>\n

\u5728 Oracle \u6578\u64da\u5eab\u4e2d\uff0c\u5206\u9801\u901a\u5e38\u4f7f\u7528 ROWNUM<\/code> \u6216 ROW_NUMBER()<\/code> \u51fd\u6578\u4f86\u5be6\u73fe\u3002\u4ee5\u4e0b\u662f\u5169\u7a2e\u5e38\u898b\u7684\u5206\u9801\u65b9\u6cd5\uff1a<\/p>\n

\u4f7f\u7528 ROWNUM<\/h3>\n

\u4f7f\u7528 ROWNUM<\/code> \u9032\u884c\u5206\u9801\u7684\u57fa\u672c\u8a9e\u6cd5\u5982\u4e0b\uff1a<\/p>\n

\nSELECT * FROM (\n    SELECT a.*, ROWNUM rnum FROM (\n        SELECT * FROM your_table ORDER BY your_column\n    ) a WHERE ROWNUM <= :end_row\n) WHERE rnum > :start_row;\n<\/code><\/pre>\n
\u5728\u9019\u6bb5\u4ee3\u78bc\u4e2d\uff0c:start_row<\/code> \u548c :end_row<\/code> \u662f\u7528\u4f86\u6307\u5b9a\u8981\u986f\u793a\u7684\u6578\u64da\u7bc4\u570d\u7684\u53c3\u6578\u3002\u9019\u7a2e\u65b9\u6cd5\u7684\u7f3a\u9ede\u662f\u9700\u8981\u5169\u6b21\u67e5\u8a62\uff0c\u6027\u80fd\u53ef\u80fd\u6703\u53d7\u5230\u5f71\u97ff\u3002<\/p>\n
\u4f7f\u7528 ROW_NUMBER()<\/h3>\n
\u53e6\u4e00\u7a2e\u66f4\u9748\u6d3b\u7684\u5206\u9801\u65b9\u6cd5\u662f\u4f7f\u7528 ROW_NUMBER()<\/code> \u51fd\u6578\u3002\u9019\u7a2e\u65b9\u6cd5\u7684\u57fa\u672c\u8a9e\u6cd5\u5982\u4e0b\uff1a<\/p>\n
\nSELECT * 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;\n<\/code><\/pre>\n
\u9019\u7a2e\u65b9\u6cd5\u7684\u512a\u9ede\u5728\u65bc\u5b83\u53ea\u9700\u8981\u4e00\u6b21\u67e5\u8a62\uff0c\u4e26\u4e14\u53ef\u4ee5\u66f4\u9748\u6d3b\u5730\u63a7\u5236\u6392\u5e8f\u548c\u5206\u9801\u3002<\/p>\n
\u6392\u5e8f\u7684\u6982\u5ff5<\/h2>\n
\u6392\u5e8f\u662f\u6307\u6839\u64da\u7279\u5b9a\u7684\u5217\u5c0d\u67e5\u8a62\u7d50\u679c\u9032\u884c\u6392\u5e8f\u3002\u9019\u53ef\u4ee5\u5e6b\u52a9\u7528\u6236\u66f4\u5bb9\u6613\u5730\u627e\u5230\u6240\u9700\u7684\u4fe1\u606f\u3002<\/p>\n
Oracle \u4e2d\u7684\u6392\u5e8f\u5be6\u73fe<\/h2>\n
\u5728 Oracle \u6578\u64da\u5eab\u4e2d\uff0c\u6392\u5e8f\u901a\u5e38\u4f7f\u7528 ORDER BY<\/code> \u5b50\u53e5\u4f86\u5be6\u73fe\u3002\u4ee5\u4e0b\u662f\u6392\u5e8f\u7684\u57fa\u672c\u8a9e\u6cd5\uff1a<\/p>\n
\nSELECT * FROM your_table\nORDER BY your_column ASC|DESC;\n<\/code><\/pre>\n
\u5728\u9019\u6bb5\u4ee3\u78bc\u4e2d\uff0cASC<\/code> \u8868\u793a\u5347\u5e8f\u6392\u5e8f\uff0c\u800c DESC<\/code> \u8868\u793a\u964d\u5e8f\u6392\u5e8f\u3002\u7528\u6236\u53ef\u4ee5\u6839\u64da\u9700\u8981\u9078\u64c7\u6392\u5e8f\u65b9\u5f0f\u3002<\/p>\n
\u7d50\u5408\u5206\u9801\u548c\u6392\u5e8f<\/h2>\n
\u5728\u5be6\u969b\u61c9\u7528\u4e2d\uff0c\u5206\u9801\u548c\u6392\u5e8f\u901a\u5e38\u662f\u7d50\u5408\u4f7f\u7528\u7684\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u793a\u4f8b\uff0c\u5c55\u793a\u5982\u4f55\u5728 Oracle \u4e2d\u540c\u6642\u5be6\u73fe\u5206\u9801\u548c\u6392\u5e8f\uff1a<\/p>\n
\nSELECT * 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\nORDER BY your_column;\n<\/code><\/pre>\n
\u9019\u6bb5\u4ee3\u78bc\u9996\u5148\u6839\u64da your_column<\/code> \u9032\u884c\u6392\u5e8f\uff0c\u7136\u5f8c\u518d\u9032\u884c\u5206\u9801\uff0c\u78ba\u4fdd\u7528\u6236\u7372\u5f97\u6709\u5e8f\u7684\u6578\u64da\u96c6\u3002<\/p>\n
\u7e3d\u7d50<\/h2>\n
Oracle \u6578\u64da\u5eab\u63d0\u4f9b\u4e86\u591a\u7a2e\u65b9\u6cd5\u4f86\u5be6\u73fe\u5206\u9801\u548c\u6392\u5e8f\u529f\u80fd\uff0c\u9019\u4e9b\u529f\u80fd\u5c0d\u65bc\u8655\u7406\u5927\u91cf\u6578\u64da\u81f3\u95dc\u91cd\u8981\u3002\u901a\u904e\u4f7f\u7528 ROWNUM<\/code> \u548c ROW_NUMBER()<\/code> \u51fd\u6578\uff0c\u958b\u767c\u8005\u53ef\u4ee5\u9748\u6d3b\u5730\u63a7\u5236\u6578\u64da\u7684\u986f\u793a\u65b9\u5f0f\u3002\u7121\u8ad6\u662f\u7528\u65bc\u7db2\u9801\u61c9\u7528\u9084\u662f\u5831\u544a\u751f\u6210\uff0c\u9019\u4e9b\u6280\u8853\u90fd\u80fd\u986f\u8457\u63d0\u9ad8\u7528\u6236\u9ad4\u9a57\u3002<\/p>\n
\u5982\u679c\u60a8\u5c0d\u65bc\u6578\u64da\u5eab\u7ba1\u7406\u6709\u9032\u4e00\u6b65\u7684\u9700\u6c42\uff0c\u8003\u616e\u4f7f\u7528 \u9999\u6e2fVPS<\/a> \u4f86\u63d0\u5347\u60a8\u7684\u61c9\u7528\u6027\u80fd\u548c\u7a69\u5b9a\u6027\u3002\u7121\u8ad6\u662f\u6578\u64da\u5b58\u5132\u9084\u662f\u61c9\u7528\u90e8\u7f72\uff0c\u9078\u64c7\u5408\u9069\u7684 \u4f3a\u670d\u5668<\/a> \u5c0d\u65bc\u696d\u52d9\u7684\u6210\u529f\u81f3\u95dc\u91cd\u8981\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
\u4e86\u89e3Oracle\u6578\u64da\u5eab\u4e2d\u5206\u9801\u548c\u6392\u5e8f\u529f\u80fd\u7684\u5be6\u73fe\u65b9\u6cd5\uff0c\u63d0\u5347\u6578\u64da\u67e5\u8a62\u6548\u7387\u548c\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-94596","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/94596","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=94596"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/94596\/revisions"}],"predecessor-version":[{"id":94597,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/94596\/revisions\/94597"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=94596"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=94596"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=94596"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}