{"id":195755,"date":"2024-11-13T17:38:22","date_gmt":"2024-11-13T09:38:22","guid":{"rendered":"https:\/\/server.hk\/cnblog\/195755\/"},"modified":"2024-11-13T17:38:23","modified_gmt":"2024-11-13T09:38:23","slug":"%e5%9c%a8oracle%e5%ad%98%e5%84%b2%e9%81%8e%e7%a8%8b%e4%b8%ad%e6%ad%a3%e7%a2%ba%e7%9a%84%e5%af%a6%e7%8f%be%e5%88%86%e9%a0%81","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/195755\/","title":{"rendered":"\u5728Oracle\u5b58\u5132\u904e\u7a0b\u4e2d\u6b63\u78ba\u7684\u5be6\u73fe\u5206\u9801"},"content":{"rendered":"

\u5728Oracle\u5b58\u5132\u904e\u7a0b\u4e2d\u6b63\u78ba\u7684\u5be6\u73fe\u5206\u9801<\/h1>\n

\u5728\u7576\u4eca\u7684\u6578\u64da\u9a45\u52d5\u4e16\u754c\u4e2d\uff0c\u5206\u9801\u6280\u8853\u5728\u6578\u64da\u5eab\u67e5\u8a62\u4e2d\u626e\u6f14\u8457\u81f3\u95dc\u91cd\u8981\u7684\u89d2\u8272\u3002\u5c24\u5176\u662f\u5728\u4f7f\u7528Oracle\u6578\u64da\u5eab\u6642\uff0c\u6b63\u78ba\u5be6\u73fe\u5206\u9801\u4e0d\u50c5\u80fd\u63d0\u9ad8\u67e5\u8a62\u6548\u7387\uff0c\u9084\u80fd\u6539\u5584\u7528\u6236\u9ad4\u9a57\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u5728Oracle\u5b58\u5132\u904e\u7a0b\u4e2d\u5982\u4f55\u6b63\u78ba\u5be6\u73fe\u5206\u9801\uff0c\u4e26\u63d0\u4f9b\u76f8\u95dc\u7684\u793a\u4f8b\u548c\u4ee3\u78bc\u7247\u6bb5\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\u7684\u6280\u8853\uff0c\u901a\u5e38\u7528\u65bc\u986f\u793a\u5728\u7528\u6236\u754c\u9762\u4e0a\u3002\u9019\u6a23\u505a\u7684\u597d\u8655\u662f\u53ef\u4ee5\u6e1b\u5c11\u4e00\u6b21\u6027\u52a0\u8f09\u7684\u6578\u64da\u91cf\uff0c\u5f9e\u800c\u63d0\u9ad8\u6027\u80fd\u548c\u53ef\u7528\u6027\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\u5be6\u73fe<\/h2>\n

\u5728Oracle\u4e2d\uff0c\u5be6\u73fe\u5206\u9801\u7684\u5e38\u7528\u65b9\u6cd5\u662f\u4f7f\u7528ROWNUM\u6216ROW_NUMBER()\u51fd\u6578\u3002\u9019\u4e9b\u65b9\u6cd5\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\u793a\u4f8b\uff1a<\/p>\n

SELECT * 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;<\/code><\/pre>\n
\u5728\u9019\u500b\u67e5\u8a62\u4e2d\uff0c:start_row\u548c:end_row\u662f\u6211\u5011\u9700\u8981\u50b3\u905e\u7684\u53c3\u6578\uff0c\u7528\u65bc\u6307\u5b9a\u8981\u8fd4\u56de\u7684\u884c\u7bc4\u570d\u3002<\/p>\n
\u4f7f\u7528ROW_NUMBER()\u9032\u884c\u5206\u9801<\/h3>\n
ROW_NUMBER()\u51fd\u6578\u662fOracle 9i\u53ca\u4ee5\u5f8c\u7248\u672c\u4e2d\u5f15\u5165\u7684\uff0c\u63d0\u4f9b\u4e86\u66f4\u9748\u6d3b\u7684\u5206\u9801\u65b9\u5f0f\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u4f7f\u7528ROW_NUMBER()\u7684\u793a\u4f8b\uff1a<\/p>\n
SELECT * FROM (\n    SELECT a.*, ROW_NUMBER() OVER (ORDER BY your_column) AS rownum FROM your_table a\n) WHERE rownum BETWEEN :start_row AND :end_row;<\/code><\/pre>\n
\u9019\u7a2e\u65b9\u6cd5\u7684\u512a\u52e2\u5728\u65bc\u5b83\u5141\u8a31\u6211\u5011\u6839\u64da\u7279\u5b9a\u7684\u6392\u5e8f\u689d\u4ef6\u4f86\u751f\u6210\u884c\u865f\uff0c\u5f9e\u800c\u5be6\u73fe\u66f4\u7cbe\u78ba\u7684\u5206\u9801\u3002<\/p>\n
\u6027\u80fd\u8003\u91cf<\/h2>\n
\u5728\u5be6\u73fe\u5206\u9801\u6642\uff0c\u6027\u80fd\u662f\u4e00\u500b\u91cd\u8981\u7684\u8003\u91cf\u56e0\u7d20\u3002\u4f7f\u7528ROWNUM\u6642\uff0cOracle\u6703\u5728\u5167\u90e8\u751f\u6210\u884c\u865f\uff0c\u9019\u53ef\u80fd\u6703\u5c0e\u81f4\u6027\u80fd\u4e0b\u964d\uff0c\u7279\u5225\u662f\u5728\u8655\u7406\u5927\u91cf\u6578\u64da\u6642\u3002\u56e0\u6b64\uff0c\u4f7f\u7528ROW_NUMBER()\u901a\u5e38\u6703\u66f4\u6709\u6548\u7387\uff0c\u56e0\u70ba\u5b83\u53ef\u4ee5\u5728\u751f\u6210\u884c\u865f\u7684\u540c\u6642\u9032\u884c\u6392\u5e8f\u3002<\/p>\n
\u7d50\u8ad6<\/h2>\n
\u5728Oracle\u5b58\u5132\u904e\u7a0b\u4e2d\u6b63\u78ba\u5be6\u73fe\u5206\u9801\u662f\u4e00\u9805\u91cd\u8981\u7684\u6280\u80fd\uff0c\u80fd\u5920\u986f\u8457\u63d0\u9ad8\u6578\u64da\u67e5\u8a62\u7684\u6548\u7387\u548c\u7528\u6236\u9ad4\u9a57\u3002\u7121\u8ad6\u662f\u4f7f\u7528ROWNUM\u9084\u662fROW_NUMBER()\uff0c\u9078\u64c7\u5408\u9069\u7684\u65b9\u6cd5\u53d6\u6c7a\u65bc\u5177\u9ad4\u7684\u9700\u6c42\u548c\u6578\u64da\u91cf\u3002\u901a\u904e\u5408\u7406\u7684\u5206\u9801\u8a2d\u8a08\uff0c\u958b\u767c\u8005\u53ef\u4ee5\u70ba\u7528\u6236\u63d0\u4f9b\u66f4\u6d41\u66a2\u7684\u64cd\u4f5c\u9ad4\u9a57\u3002<\/p>\n
\u7e3d\u7d50<\/h2>\n
\u5728Oracle\u4e2d\u5be6\u73fe\u5206\u9801\u7684\u6280\u8853\u4e0d\u50c5\u80fd\u63d0\u9ad8\u67e5\u8a62\u6548\u7387\uff0c\u9084\u80fd\u6539\u5584\u7528\u6236\u9ad4\u9a57\u3002\u7121\u8ad6\u662f\u4f7f\u7528ROWNUM\u9084\u662fROW_NUMBER()\uff0c\u90fd\u80fd\u6709\u6548\u5730\u7ba1\u7406\u5927\u91cf\u6578\u64da\u7684\u986f\u793a\u3002\u5c0d\u65bc\u9700\u8981\u9ad8\u6548\u6578\u64da\u8655\u7406\u7684\u61c9\u7528\uff0c\u9078\u64c7\u5408\u9069\u7684\u6578\u64da\u5eab\u89e3\u6c7a\u65b9\u6848\u81f3\u95dc\u91cd\u8981\u3002\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u53ef\u9760\u7684 \u9999\u6e2fVPS<\/a> \u670d\u52d9\uff0cServer.HK\u63d0\u4f9b\u591a\u7a2e\u9078\u64c7\u4ee5\u6eff\u8db3\u60a8\u7684\u9700\u6c42\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
\u5b78\u7fd2\u5982\u4f55\u5728Oracle\u5b58\u5132\u904e\u7a0b\u4e2d\u6b63\u78ba\u5be6\u73fe\u5206\u9801\uff0c\u63d0\u5347\u67e5\u8a62\u6548\u7387\uff0c\u512a\u5316\u6578\u64da\u8655\u7406\uff0c\u589e\u5f37\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-195755","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/195755","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=195755"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/195755\/revisions"}],"predecessor-version":[{"id":195756,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/195755\/revisions\/195756"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=195755"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=195755"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=195755"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}