oracle 10g+ 行列转换
发布时间:2020-12-12 14:21:43 所属栏目:百科 来源:网络整理
导读:WITH t AS( SELECT 1 AS sno,1 AS cno,5 AS grade FROM dual UNION ALL SELECT 1,2,6 FROM dual UNION ALL SELECT 1,3,10 FROM dual UNION ALL SELECT 2,10 FROM dual UNION ALL SELECT 3,1,9 FROM dual UNION ALL SELECT 3,9 FROM dual) SELECT a.sno,Max(a
WITH t AS( SELECT 1 AS sno,1 AS cno,5 AS grade FROM dual UNION ALL SELECT 1,2,6 FROM dual UNION ALL SELECT 1,3,10 FROM dual UNION ALL SELECT 2,10 FROM dual UNION ALL SELECT 3,1,9 FROM dual UNION ALL SELECT 3,9 FROM dual) SELECT a.sno,Max(a.aa) FROM (SELECT sno,wm_concat(cno || ',' || grade) over(partition BY sno order by cno,grade) AS aa FROM t) a GROUP BY a.sno; 运行一下就知道是啥意思了 (编辑:李大同) 【声明】本站内容均来自网络,其相关言论仅代表作者个人观点,不代表本站立场。若无意侵犯到您的权利,请及时与联系站长删除相关内容! |