{"id":183906,"date":"2024-11-10T08:43:19","date_gmt":"2024-11-10T00:43:19","guid":{"rendered":"https:\/\/server.hk\/cnblog\/183906\/"},"modified":"2024-11-10T08:43:20","modified_gmt":"2024-11-10T00:43:20","slug":"%e4%bd%bf%e7%94%a8oracle%e5%ad%98%e5%84%b2%e9%81%8e%e7%a8%8b%e5%88%86%e9%a0%81%e7%9a%84%e5%af%a6%e4%be%8b","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/183906\/","title":{"rendered":"\u4f7f\u7528oracle\u5b58\u5132\u904e\u7a0b\u5206\u9801\u7684\u5be6\u4f8b"},"content":{"rendered":"

\u4f7f\u7528Oracle\u5b58\u5132\u904e\u7a0b\u5206\u9801\u7684\u5be6\u4f8b<\/h1>\n

\u5728\u73fe\u4ee3\u61c9\u7528\u7a0b\u5e8f\u4e2d\uff0c\u6578\u64da\u7684\u7ba1\u7406\u548c\u986f\u793a\u662f\u81f3\u95dc\u91cd\u8981\u7684\u3002\u96a8\u8457\u6578\u64da\u91cf\u7684\u589e\u9577\uff0c\u5982\u4f55\u6709\u6548\u5730\u5f9e\u6578\u64da\u5eab\u4e2d\u6aa2\u7d22\u548c\u986f\u793a\u6578\u64da\u6210\u70ba\u4e86\u4e00\u500b\u6311\u6230\u3002Oracle\u6578\u64da\u5eab\u63d0\u4f9b\u4e86\u591a\u7a2e\u65b9\u6cd5\u4f86\u5be6\u73fe\u6578\u64da\u7684\u5206\u9801\uff0c\u9019\u5c0d\u65bc\u63d0\u9ad8\u61c9\u7528\u7a0b\u5e8f\u7684\u6027\u80fd\u548c\u7528\u6236\u9ad4\u9a57\u81f3\u95dc\u91cd\u8981\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u5982\u4f55\u4f7f\u7528Oracle\u5b58\u5132\u904e\u7a0b\u4f86\u5be6\u73fe\u6578\u64da\u7684\u5206\u9801\uff0c\u4e26\u63d0\u4f9b\u5177\u9ad4\u7684\u5be6\u4f8b\u548c\u4ee3\u78bc\u793a\u4f8b\u3002<\/p>\n

\u4ec0\u9ebc\u662f\u5206\u9801\uff1f<\/h2>\n

\u5206\u9801\u662f\u5c07\u5927\u91cf\u6578\u64da\u5206\u6210\u591a\u500b\u5c0f\u90e8\u5206\uff08\u9801\u9762\uff09\u9032\u884c\u986f\u793a\u7684\u6280\u8853\u3002\u9019\u6a23\u53ef\u4ee5\u6e1b\u5c11\u4e00\u6b21\u6027\u52a0\u8f09\u7684\u6578\u64da\u91cf\uff0c\u63d0\u9ad8\u52a0\u8f09\u901f\u5ea6\uff0c\u4e26\u6539\u5584\u7528\u6236\u9ad4\u9a57\u3002\u7528\u6236\u53ef\u4ee5\u901a\u904e\u7ffb\u9801\u4f86\u67e5\u770b\u4e0d\u540c\u7684\u6578\u64da\u96c6\uff0c\u800c\u4e0d\u5fc5\u4e00\u6b21\u6027\u52a0\u8f09\u6240\u6709\u6578\u64da\u3002<\/p>\n

Oracle\u4e2d\u7684\u5206\u9801\u6280\u8853<\/h2>\n

\u5728Oracle\u4e2d\uff0c\u5be6\u73fe\u5206\u9801\u7684\u5e38\u7528\u65b9\u6cd5\u662f\u4f7f\u7528ROWNUM\u6216ROW_NUMBER()\u51fd\u6578\u3002\u9019\u4e9b\u51fd\u6578\u53ef\u4ee5\u5e6b\u52a9\u6211\u5011\u5728\u67e5\u8a62\u4e2d\u9650\u5236\u8fd4\u56de\u7684\u884c\u6578\uff0c\u5f9e\u800c\u5be6\u73fe\u5206\u9801\u6548\u679c\u3002<\/p>\n

\u4f7f\u7528ROWNUM\u9032\u884c\u5206\u9801<\/h3>\n

ROWNUM\u662f\u4e00\u500b\u865b\u64ec\u5217\uff0c\u8868\u793a\u67e5\u8a62\u7d50\u679c\u4e2d\u7684\u884c\u865f\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u4f7f\u7528ROWNUM\u9032\u884c\u5206\u9801\u7684\u7c21\u55ae\u793a\u4f8b\uff1a<\/p>\n

\nCREATE OR REPLACE PROCEDURE get_paginated_data (\n    p_page_number IN NUMBER,\n    p_page_size IN NUMBER,\n    p_cursor OUT SYS_REFCURSOR\n) AS\nBEGIN\n    OPEN p_cursor FOR\n    SELECT * FROM (\n        SELECT a.*, ROWNUM rnum FROM (\n            SELECT * FROM your_table ORDER BY your_column\n        ) a\n        WHERE ROWNUM  (p_page_number - 1) * p_page_size;\nEND;\n<\/code><\/pre>\n
\u5728\u9019\u500b\u793a\u4f8b\u4e2d\uff0c\u6211\u5011\u5275\u5efa\u4e86\u4e00\u500b\u540d\u70baget_paginated_data\u7684\u5b58\u5132\u904e\u7a0b\uff0c\u63a5\u53d7\u9801\u78bc\u548c\u6bcf\u9801\u5927\u5c0f\u4f5c\u70ba\u53c3\u6578\uff0c\u4e26\u8fd4\u56de\u4e00\u500b\u6e38\u6a19\uff0c\u8a72\u6e38\u6a19\u5305\u542b\u6307\u5b9a\u9801\u78bc\u7684\u6578\u64da\u3002<\/p>\n
\u4f7f\u7528ROW_NUMBER()\u9032\u884c\u5206\u9801<\/h3>\n
\u53e6\u4e00\u7a2e\u66f4\u9748\u6d3b\u7684\u5206\u9801\u65b9\u6cd5\u662f\u4f7f\u7528ROW_NUMBER()\u51fd\u6578\u3002\u9019\u500b\u51fd\u6578\u53ef\u4ee5\u70ba\u67e5\u8a62\u7d50\u679c\u4e2d\u7684\u6bcf\u4e00\u884c\u5206\u914d\u4e00\u500b\u552f\u4e00\u7684\u884c\u865f\u3002\u4ee5\u4e0b\u662f\u4f7f\u7528ROW_NUMBER()\u9032\u884c\u5206\u9801\u7684\u793a\u4f8b\uff1a<\/p>\n
\nCREATE OR REPLACE PROCEDURE get_paginated_data_v2 (\n    p_page_number IN NUMBER,\n    p_page_size IN NUMBER,\n    p_cursor OUT SYS_REFCURSOR\n) AS\nBEGIN\n    OPEN p_cursor FOR\n    SELECT * FROM (\n        SELECT a.*, ROW_NUMBER() OVER (ORDER BY your_column) AS row_num FROM your_table a\n    )\n    WHERE row_num BETWEEN (p_page_number - 1) * p_page_size + 1 AND p_page_number * p_page_size;\nEND;\n<\/code><\/pre>\n
\u5728\u9019\u500b\u793a\u4f8b\u4e2d\uff0c\u6211\u5011\u4f7f\u7528ROW_NUMBER()\u51fd\u6578\u70ba\u6bcf\u4e00\u884c\u5206\u914d\u884c\u865f\uff0c\u7136\u5f8c\u6839\u64da\u884c\u865f\u7bc4\u570d\u4f86\u8fd4\u56de\u7279\u5b9a\u9801\u9762\u7684\u6578\u64da\u3002<\/p>\n
\u7e3d\u7d50<\/h2>\n
\u4f7f\u7528Oracle\u5b58\u5132\u904e\u7a0b\u9032\u884c\u6578\u64da\u5206\u9801\u662f\u4e00\u7a2e\u6709\u6548\u7684\u6578\u64da\u7ba1\u7406\u6280\u8853\u3002\u901a\u904e\u4f7f\u7528ROWNUM\u6216ROW_NUMBER()\u51fd\u6578\uff0c\u6211\u5011\u53ef\u4ee5\u8f15\u9b06\u5730\u5be6\u73fe\u6578\u64da\u7684\u5206\u9801\uff0c\u5f9e\u800c\u63d0\u9ad8\u61c9\u7528\u7a0b\u5e8f\u7684\u6027\u80fd\u548c\u7528\u6236\u9ad4\u9a57\u3002\u9019\u4e9b\u6280\u8853\u5728\u8655\u7406\u5927\u91cf\u6578\u64da\u6642\u5c24\u70ba\u91cd\u8981\uff0c\u80fd\u5920\u5e6b\u52a9\u958b\u767c\u8005\u66f4\u597d\u5730\u7ba1\u7406\u548c\u986f\u793a\u6578\u64da\u3002<\/p>\n
\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u9ad8\u6548\u7684\u6578\u64da\u5b58\u5132\u89e3\u6c7a\u65b9\u6848\uff0c\u8003\u616e\u4f7f\u7528\u9999\u6e2fVPS<\/a>\u670d\u52d9\uff0c\u9019\u5c07\u70ba\u60a8\u7684\u61c9\u7528\u7a0b\u5e8f\u63d0\u4f9b\u7a69\u5b9a\u548c\u53ef\u9760\u7684\u652f\u6301\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
\u63a2\u7d22\u4f7f\u7528Oracle\u5b58\u5132\u904e\u7a0b\u9032\u884c\u6578\u64da\u5206\u9801\u7684\u5be6\u4f8b\uff0c\u63d0\u5347\u67e5\u8a62\u6548\u7387\uff0c\u7c21\u5316\u6578\u64da\u7ba1\u7406\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-183906","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/183906","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=183906"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/183906\/revisions"}],"predecessor-version":[{"id":183907,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/183906\/revisions\/183907"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=183906"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=183906"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=183906"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}