Oracle SQL GROUP BY“不是GROUP BY表达式”的辅佐
发布时间:2021-05-23 05:37:31 所属栏目:站长百科 来源:网络整理
导读:我有一张table some_table +--------+----------+---------------------+-------+| id | other_id | date_value | value |+--------+----------+---------------------+-------+| 1 | 1 | 2011-04-20 21:03:05 | 104 || 2 | 2 | 2011-04-20 21:03:04 | 229 |
我有一张table some_table +--------+----------+---------------------+-------+ | id | other_id | date_value | value | +--------+----------+---------------------+-------+ | 1 | 1 | 2011-04-20 21:03:05 | 104 | | 2 | 2 | 2011-04-20 21:03:04 | 229 | | 3 | 3 | 2011-04-20 21:03:03 | 130 | | 4 | 1 | 2011-04-20 21:02:09 | 97 | | 5 | 2 | 2011-04-20 21:02:08 | 65 | | 6 | 3 | 2011-04-20 21:02:07 | 101 | | ... | ... | ... | ... | +--------+----------+---------------------+-------+ 我想要最新的记录为other_id 1,2和3.我想出的明明的查询是 SELECT id,other_id,MAX(date_value),value FROM some_table WHERE other_id IN (1,2,3) GROUP BY other_id 可是它会吐出“不是GROUP BY表达式”非常.我实行在GROUP BY子句中添加全部其他字段(即id,value),可是只返回全部内容,就仿佛没有GROUP BY子句一样. (嗯,这也有原理.) 以是…我正在阅读Oracle SQL手册,全部我可以找到的是一些例子,仅涉及到两列或三列的查询和一些我早年从未看过的分构成果.我该怎么去归去 +--------+----------+---------------------+-------+ | id | other_id | date_value | value | +--------+----------+---------------------+-------+ | 1 | 1 | 2011-04-20 21:03:05 | 104 | | 2 | 2 | 2011-04-20 21:03:04 | 229 | | 3 | 3 | 2011-04-20 21:03:03 | 130 | +--------+----------+---------------------+-------+ (每个other_id的最新条目)?感谢. select id,date_value,value from ( SELECT id,value,ROW_NUMBER() OVER (partition by other_id order BY Date_Value desc) r FROM some_table WHERE other_id IN (1,3) ) where r = 1 (编辑:湖南网) 【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! |