{"id":95372,"date":"2024-10-20T00:30:20","date_gmt":"2024-10-19T16:30:20","guid":{"rendered":"https:\/\/server.hk\/cnblog\/95372\/"},"modified":"2024-10-20T00:30:20","modified_gmt":"2024-10-19T16:30:20","slug":"oracle%e4%bd%bf%e7%94%a8sql%e8%aa%9e%e5%8f%a5%e7%94%9f%e6%88%90%e6%97%a5%e6%9b%86%e7%9a%84%e5%af%a6%e7%8f%be%e6%96%b9%e6%b3%95","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/95372\/","title":{"rendered":"Oracle\u4f7f\u7528SQL\u8a9e\u53e5\u751f\u6210\u65e5\u66c6\u7684\u5be6\u73fe\u65b9\u6cd5"},"content":{"rendered":"

Oracle\u4f7f\u7528SQL\u8a9e\u53e5\u751f\u6210\u65e5\u66c6\u7684\u5be6\u73fe\u65b9\u6cd5<\/h1>\n

\u5728\u6578\u64da\u5eab\u7ba1\u7406\u4e2d\uff0c\u751f\u6210\u65e5\u66c6\u662f\u4e00\u500b\u5e38\u898b\u7684\u9700\u6c42\uff0c\u5c24\u5176\u662f\u5728\u5831\u544a\u548c\u6578\u64da\u5206\u6790\u4e2d\u3002Oracle\u6578\u64da\u5eab\u63d0\u4f9b\u4e86\u5f37\u5927\u7684SQL\u8a9e\u8a00\uff0c\u53ef\u4ee5\u7528\u4f86\u751f\u6210\u65e5\u66c6\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u5982\u4f55\u4f7f\u7528SQL\u8a9e\u53e5\u5728Oracle\u4e2d\u751f\u6210\u65e5\u66c6\uff0c\u4e26\u63d0\u4f9b\u5177\u9ad4\u7684\u5be6\u73fe\u65b9\u6cd5\u548c\u793a\u4f8b\u3002<\/p>\n

\u65e5\u66c6\u7684\u57fa\u672c\u6982\u5ff5<\/h2>\n

\u65e5\u66c6\u901a\u5e38\u662f\u6307\u4e00\u6bb5\u6642\u9593\u5167\u7684\u65e5\u671f\u5217\u8868\uff0c\u9019\u4e9b\u65e5\u671f\u53ef\u4ee5\u7528\u4f86\u9032\u884c\u5404\u7a2e\u8a08\u7b97\u548c\u5206\u6790\u3002\u5728\u6578\u64da\u5eab\u4e2d\uff0c\u751f\u6210\u65e5\u66c6\u7684\u4e3b\u8981\u76ee\u7684\u662f\u70ba\u4e86\u65b9\u4fbf\u67e5\u8a62\u548c\u5831\u544a\u3002\u65e5\u66c6\u53ef\u4ee5\u5305\u62ec\u5e74\u3001\u6708\u3001\u65e5\u3001\u661f\u671f\u7b49\u4fe1\u606f\uff0c\u4e26\u4e14\u53ef\u4ee5\u6839\u64da\u9700\u8981\u9032\u884c\u64f4\u5c55\u3002<\/p>\n

\u4f7f\u7528SQL\u751f\u6210\u65e5\u66c6<\/h2>\n

\u5728Oracle\u4e2d\uff0c\u6211\u5011\u53ef\u4ee5\u4f7f\u7528CTE\uff08\u516c\u7528\u8868\u8868\u9054\u5f0f\uff09\u548c\u905e\u8ff4\u67e5\u8a62\u4f86\u751f\u6210\u65e5\u66c6\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u7c21\u55ae\u7684\u793a\u4f8b\uff0c\u5c55\u793a\u5982\u4f55\u751f\u6210\u5f9e\u67d0\u500b\u958b\u59cb\u65e5\u671f\u5230\u7d50\u675f\u65e5\u671f\u7684\u65e5\u66c6\u3002<\/p>\n

\u793a\u4f8b\uff1a\u751f\u6210\u4e00\u500b\u6708\u7684\u65e5\u66c6<\/h3>\n
WITH RECURSIVE calendar AS (\n    SELECT TO_DATE('2023-10-01', 'YYYY-MM-DD') AS calendar_date\n    FROM dual\n    UNION ALL\n    SELECT calendar_date + INTERVAL '1' DAY\n    FROM calendar\n    WHERE calendar_date < TO_DATE('2023-10-31', 'YYYY-MM-DD')\n)\nSELECT TO_CHAR(calendar_date, 'YYYY-MM-DD') AS date\nFROM calendar;\n<\/code><\/pre>\n
\u5728\u9019\u500b\u793a\u4f8b\u4e2d\uff0c\u6211\u5011\u4f7f\u7528\u4e86CTE\u4f86\u751f\u6210\u5f9e2023\u5e7410\u67081\u65e5\u52302023\u5e7410\u670831\u65e5\u7684\u65e5\u671f\u3002\u9996\u5148\uff0c\u6211\u5011\u5b9a\u7fa9\u4e86\u521d\u59cb\u65e5\u671f\uff0c\u7136\u5f8c\u4f7f\u7528\u905e\u8ff4\u67e5\u8a62\u4f86\u751f\u6210\u5f8c\u7e8c\u7684\u65e5\u671f\uff0c\u76f4\u5230\u9054\u5230\u7d50\u675f\u65e5\u671f\u3002<\/p>\n
\u64f4\u5c55\u65e5\u66c6\u529f\u80fd<\/h2>\n
\u9664\u4e86\u751f\u6210\u57fa\u672c\u7684\u65e5\u671f\u5217\u8868\uff0c\u6211\u5011\u9084\u53ef\u4ee5\u64f4\u5c55\u65e5\u66c6\u7684\u529f\u80fd\uff0c\u4f8b\u5982\u6dfb\u52a0\u661f\u671f\u5e7e\u3001\u6708\u4efd\u7b49\u4fe1\u606f\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u64f4\u5c55\u7684\u793a\u4f8b\uff1a<\/p>\n
WITH RECURSIVE calendar AS (\n    SELECT TO_DATE('2023-10-01', 'YYYY-MM-DD') AS calendar_date\n    FROM dual\n    UNION ALL\n    SELECT calendar_date + INTERVAL '1' DAY\n    FROM calendar\n    WHERE calendar_date < TO_DATE('2023-10-31', 'YYYY-MM-DD')\n)\nSELECT TO_CHAR(calendar_date, 'YYYY-MM-DD') AS date,\n       TO_CHAR(calendar_date, 'Day') AS day_of_week,\n       EXTRACT(MONTH FROM calendar_date) AS month,\n       EXTRACT(YEAR FROM calendar_date) AS year\nFROM calendar;\n<\/code><\/pre>\n
\u5728\u9019\u500b\u64f4\u5c55\u7684\u793a\u4f8b\u4e2d\uff0c\u6211\u5011\u4e0d\u50c5\u751f\u6210\u4e86\u65e5\u671f\uff0c\u9084\u63d0\u53d6\u4e86\u6bcf\u500b\u65e5\u671f\u7684\u661f\u671f\u5e7e\u3001\u6708\u4efd\u548c\u5e74\u4efd\u3002\u9019\u6a23\u7684\u65e5\u66c6\u53ef\u4ee5\u7528\u65bc\u66f4\u8907\u96dc\u7684\u5831\u544a\u548c\u6578\u64da\u5206\u6790\u3002<\/p>\n
\u6027\u80fd\u8003\u91cf<\/h2>\n
\u5728\u751f\u6210\u5927\u7bc4\u570d\u7684\u65e5\u66c6\u6642\uff0c\u6027\u80fd\u53ef\u80fd\u6210\u70ba\u4e00\u500b\u554f\u984c\u3002\u4f7f\u7528CTE\u548c\u905e\u8ff4\u67e5\u8a62\u5728\u8655\u7406\u5927\u91cf\u6578\u64da\u6642\u53ef\u80fd\u6703\u5c0e\u81f4\u6027\u80fd\u4e0b\u964d\u3002\u56e0\u6b64\uff0c\u5efa\u8b70\u5728\u751f\u6210\u65e5\u66c6\u6642\uff0c\u6839\u64da\u5be6\u969b\u9700\u6c42\u9078\u64c7\u5408\u9069\u7684\u65e5\u671f\u7bc4\u570d\uff0c\u4e26\u8003\u616e\u4f7f\u7528\u7d22\u5f15\u4f86\u63d0\u9ad8\u67e5\u8a62\u6027\u80fd\u3002<\/p>\n
\u7e3d\u7d50<\/h2>\n
\u4f7f\u7528Oracle SQL\u751f\u6210\u65e5\u66c6\u662f\u4e00\u500b\u7c21\u55ae\u800c\u6709\u6548\u7684\u89e3\u6c7a\u65b9\u6848\uff0c\u53ef\u4ee5\u5e6b\u52a9\u7528\u6236\u5728\u6578\u64da\u5206\u6790\u548c\u5831\u544a\u4e2d\u66f4\u597d\u5730\u7ba1\u7406\u6642\u9593\u6578\u64da\u3002\u901a\u904eCTE\u548c\u905e\u8ff4\u67e5\u8a62\uff0c\u6211\u5011\u53ef\u4ee5\u9748\u6d3b\u5730\u751f\u6210\u6240\u9700\u7684\u65e5\u671f\u5217\u8868\uff0c\u4e26\u64f4\u5c55\u5176\u529f\u80fd\u4ee5\u6eff\u8db3\u4e0d\u540c\u7684\u9700\u6c42\u3002\u5982\u679c\u60a8\u9700\u8981\u9ad8\u6548\u7684\u6578\u64da\u8655\u7406\u548c\u5b58\u5132\u89e3\u6c7a\u65b9\u6848\uff0c\u8003\u616e\u4f7f\u7528\u9999\u6e2fVPS<\/a>\u670d\u52d9\u4f86\u652f\u6301\u60a8\u7684\u6578\u64da\u5eab\u61c9\u7528\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
\u63a2\u7d22Oracle\u4e2d\u4f7f\u7528SQL\u8a9e\u53e5\u751f\u6210\u65e5\u66c6\u7684\u5be6\u73fe\u65b9\u6cd5\uff0c\u7c21\u5316\u65e5\u671f\u7ba1\u7406\uff0c\u63d0\u5347\u6578\u64da\u67e5\u8a62\u6548\u7387\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-95372","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/95372","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=95372"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/95372\/revisions"}],"predecessor-version":[{"id":95373,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/95372\/revisions\/95373"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=95372"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=95372"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=95372"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}