{"id":95100,"date":"2024-10-19T22:14:21","date_gmt":"2024-10-19T14:14:21","guid":{"rendered":"https:\/\/server.hk\/cnblog\/95100\/"},"modified":"2024-10-19T22:14:21","modified_gmt":"2024-10-19T14:14:21","slug":"oracle%e5%a4%9a%e6%a2%9d%e4%bb%b6%e6%9f%a5%e8%a9%a2%e5%af%a6%e9%9a%9b%e5%88%86%e9%a0%81%e5%ad%98%e5%84%b2%e9%81%8e%e7%a8%8b%e5%af%a6%e6%93%8d","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/95100\/","title":{"rendered":"Oracle\u591a\u689d\u4ef6\u67e5\u8a62\u5be6\u969b\u5206\u9801\u5b58\u5132\u904e\u7a0b\u5be6\u64cd"},"content":{"rendered":"

Oracle\u591a\u689d\u4ef6\u67e5\u8a62\u5be6\u969b\u5206\u9801\u5b58\u5132\u904e\u7a0b\u5be6\u64cd<\/h1>\n

\u5728\u6578\u64da\u5eab\u7ba1\u7406\u4e2d\uff0c\u67e5\u8a62\u6027\u80fd\u7684\u512a\u5316\u662f\u81f3\u95dc\u91cd\u8981\u7684\uff0c\u5c24\u5176\u662f\u5728\u8655\u7406\u5927\u91cf\u6578\u64da\u6642\u3002Oracle\u6578\u64da\u5eab\u63d0\u4f9b\u4e86\u591a\u7a2e\u67e5\u8a62\u65b9\u5f0f\uff0c\u5176\u4e2d\u591a\u689d\u4ef6\u67e5\u8a62\u548c\u5206\u9801\u67e5\u8a62\u662f\u6700\u5e38\u898b\u7684\u9700\u6c42\u4e4b\u4e00\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u5982\u4f55\u5728Oracle\u4e2d\u5be6\u73fe\u591a\u689d\u4ef6\u67e5\u8a62\u7684\u5206\u9801\u5b58\u5132\u904e\u7a0b\uff0c\u4e26\u63d0\u4f9b\u5be6\u969b\u7684\u4ee3\u78bc\u793a\u4f8b\u3002<\/p>\n

\u591a\u689d\u4ef6\u67e5\u8a62\u7684\u57fa\u672c\u6982\u5ff5<\/h2>\n

\u591a\u689d\u4ef6\u67e5\u8a62\u662f\u6307\u5728\u67e5\u8a62\u4e2d\u4f7f\u7528\u591a\u500b\u689d\u4ef6\u4f86\u904e\u6ffe\u6578\u64da\u3002\u9019\u4e9b\u689d\u4ef6\u53ef\u4ee5\u662f\u57fa\u65bc\u4e0d\u540c\u7684\u5b57\u6bb5\uff0c\u4f8b\u5982\u65e5\u671f\u3001\u985e\u5225\u3001\u50f9\u683c\u7b49\u3002\u4f7f\u7528\u591a\u689d\u4ef6\u67e5\u8a62\u53ef\u4ee5\u5e6b\u52a9\u7528\u6236\u66f4\u7cbe\u78ba\u5730\u7372\u53d6\u6240\u9700\u7684\u4fe1\u606f\u3002<\/p>\n

\u57fa\u672c\u7684SQL\u67e5\u8a62\u8a9e\u6cd5<\/h3>\n
\nSELECT * FROM \u8868\u540d\nWHERE \u689d\u4ef61 AND \u689d\u4ef62 AND \u689d\u4ef63;\n<\/code><\/pre>\n
\u5728\u9019\u88e1\uff0c\u689d\u4ef6\u53ef\u4ee5\u662f\u4efb\u4f55\u6709\u6548\u7684SQL\u8868\u9054\u5f0f\u3002\u7576\u7136\uff0c\u4f7f\u7528OR\u904b\u7b97\u7b26\u4e5f\u53ef\u4ee5\u5be6\u73fe\u4e0d\u540c\u7684\u67e5\u8a62\u9700\u6c42\u3002<\/p>\n
\u5206\u9801\u67e5\u8a62\u7684\u5fc5\u8981\u6027<\/h2>\n
\u5728\u8655\u7406\u5927\u91cf\u6578\u64da\u6642\uff0c\u5c07\u6240\u6709\u6578\u64da\u4e00\u6b21\u6027\u986f\u793a\u5728\u7528\u6236\u754c\u9762\u4e0a\u6703\u5c0e\u81f4\u6027\u80fd\u554f\u984c\u3002\u56e0\u6b64\uff0c\u5206\u9801\u67e5\u8a62\u53ef\u4ee5\u6709\u6548\u5730\u6e1b\u5c11\u6bcf\u6b21\u67e5\u8a62\u6240\u9700\u7684\u6578\u64da\u91cf\uff0c\u5f9e\u800c\u63d0\u9ad8\u6027\u80fd\u548c\u7528\u6236\u9ad4\u9a57\u3002<\/p>\n
Oracle\u4e2d\u7684\u5206\u9801\u67e5\u8a62<\/h3>\n
\u5728Oracle\u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528ROWNUM\u6216ROW_NUMBER()\u51fd\u6578\u4f86\u5be6\u73fe\u5206\u9801\u67e5\u8a62\u3002\u4ee5\u4e0b\u662f\u4f7f\u7528ROW_NUMBER()\u7684\u57fa\u672c\u8a9e\u6cd5\uff1a<\/p>\n
\nSELECT * FROM (\n    SELECT a.*, ROW_NUMBER() OVER (ORDER BY \u6392\u5e8f\u5b57\u6bb5) AS rn\n    FROM \u8868\u540d a\n    WHERE \u689d\u4ef6\n) \nWHERE rn BETWEEN \u8d77\u59cb\u884c AND \u7d50\u675f\u884c;\n<\/code><\/pre>\n
\u5be6\u969b\u5206\u9801\u5b58\u5132\u904e\u7a0b\u7684\u5be6\u4f5c<\/h2>\n
\u63a5\u4e0b\u4f86\uff0c\u6211\u5011\u5c07\u5275\u5efa\u4e00\u500b\u5b58\u5132\u904e\u7a0b\uff0c\u8a72\u904e\u7a0b\u53ef\u4ee5\u6839\u64da\u591a\u689d\u4ef6\u67e5\u8a62\u548c\u5206\u9801\u8981\u6c42\u4f86\u8fd4\u56de\u6578\u64da\u3002<\/p>\n
\u5b58\u5132\u904e\u7a0b\u793a\u4f8b<\/h3>\n
\nCREATE OR REPLACE PROCEDURE GetPagedData (\n    p_page_number IN NUMBER,\n    p_page_size IN NUMBER,\n    p_condition1 IN VARCHAR2,\n    p_condition2 IN VARCHAR2,\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 id) AS rn\n        FROM your_table a\n        WHERE column1 = p_condition1 AND column2 = p_condition2\n    )\n    WHERE rn BETWEEN (p_page_number - 1) * p_page_size + 1 AND p_page_number * p_page_size;\nEND;\n<\/code><\/pre>\n
\u5728\u9019\u500b\u5b58\u5132\u904e\u7a0b\u4e2d\uff0c\u6211\u5011\u63a5\u53d7\u9801\u78bc\u3001\u6bcf\u9801\u5927\u5c0f\u4ee5\u53ca\u5169\u500b\u67e5\u8a62\u689d\u4ef6\u4f5c\u70ba\u53c3\u6578\u3002\u7136\u5f8c\uff0c\u6211\u5011\u4f7f\u7528ROW_NUMBER()\u51fd\u6578\u4f86\u751f\u6210\u884c\u865f\uff0c\u4e26\u6839\u64da\u884c\u865f\u9032\u884c\u5206\u9801\u3002<\/p>\n
\u8abf\u7528\u5b58\u5132\u904e\u7a0b<\/h2>\n
\u8abf\u7528\u9019\u500b\u5b58\u5132\u904e\u7a0b\u7684\u793a\u4f8b\u4ee3\u78bc\u5982\u4e0b\uff1a<\/p>\n
\nDECLARE\n    v_cursor SYS_REFCURSOR;\n    v_column1 your_table.column1%TYPE;\n    v_column2 your_table.column2%TYPE;\nBEGIN\n    GetPagedData(1, 10, '\u689d\u4ef61', '\u689d\u4ef62', v_cursor);\n    \n    LOOP\n        FETCH v_cursor INTO v_column1, v_column2;\n        EXIT WHEN v_cursor%NOTFOUND;\n        DBMS_OUTPUT.PUT_LINE(v_column1 || ' ' || v_column2);\n    END LOOP;\n    \n    CLOSE v_cursor;\nEND;\n<\/code><\/pre>\n
\u5728\u9019\u6bb5\u4ee3\u78bc\u4e2d\uff0c\u6211\u5011\u8abf\u7528\u5b58\u5132\u904e\u7a0b\u4e26\u7372\u53d6\u7d50\u679c\u96c6\uff0c\u7136\u5f8c\u4f7f\u7528LOOP\u7d50\u69cb\u4f86\u904d\u6b77\u7d50\u679c\u4e26\u8f38\u51fa\u3002<\/p>\n
\u7e3d\u7d50<\/h2>\n
\u901a\u904e\u4ee5\u4e0a\u7684\u4ecb\u7d39\uff0c\u6211\u5011\u4e86\u89e3\u4e86\u5982\u4f55\u5728Oracle\u4e2d\u5be6\u73fe\u591a\u689d\u4ef6\u67e5\u8a62\u7684\u5206\u9801\u5b58\u5132\u904e\u7a0b\u3002\u9019\u7a2e\u65b9\u6cd5\u4e0d\u50c5\u63d0\u9ad8\u4e86\u67e5\u8a62\u6548\u7387\uff0c\u9084\u80fd\u5920\u9748\u6d3b\u5730\u61c9\u5c0d\u4e0d\u540c\u7684\u67e5\u8a62\u9700\u6c42\u3002\u5c0d\u65bc\u9700\u8981\u8655\u7406\u5927\u91cf\u6578\u64da\u7684\u61c9\u7528\u5834\u666f\uff0c\u9019\u7a2e\u6280\u8853\u5c24\u70ba\u91cd\u8981\u3002<\/p>\n
\u5982\u679c\u60a8\u5c0d\u65bc\u6578\u64da\u5eab\u7ba1\u7406\u548c\u67e5\u8a62\u512a\u5316\u6709\u9032\u4e00\u6b65\u7684\u9700\u6c42\uff0c\u8003\u616e\u4f7f\u7528\u9999\u6e2fVPS<\/a>\u4f86\u642d\u5efa\u60a8\u7684\u6578\u64da\u5eab\u74b0\u5883\uff0c\u4eab\u53d7\u66f4\u9ad8\u7684\u6027\u80fd\u548c\u7a69\u5b9a\u6027\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
\u63a2\u7d22Oracle\u591a\u689d\u4ef6\u67e5\u8a62\u7684\u5be6\u969b\u5206\u9801\u5b58\u5132\u904e\u7a0b\uff0c\u5b78\u7fd2\u5982\u4f55\u9ad8\u6548\u7ba1\u7406\u6578\u64da\u67e5\u8a62\u8207\u986f\u793a\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-95100","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/95100","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=95100"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/95100\/revisions"}],"predecessor-version":[{"id":95101,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/95100\/revisions\/95101"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=95100"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=95100"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=95100"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}