在SQL Oracle中进行求和的组

Question

在下表中，我需要对COL3和COL5求和，按COL2NAME分组。 所以会有3行：

DC
Cred
Equi

...使用COL3和COL5的总和值。

我怎么能这样做？

以下是截图中的查询：

select t.*
from (select COL1, COL2 as COL2NAME, sum(COL3A+COL3B) as COL3,
COL4 as COL4NAME, count(COL5NO) as COL5, DENSE_RANK()OVER(ORDER BY COL1) GROUPID
      from TAB
      group by COL1, COL2, COL4
     ) t
where GROUPID = 1
or GROUPID = 2

Answer 1

所以只需添加group by：

select col2name, sum(col3 + col5)
from (select COL1, COL2 as COL2NAME, sum(COL3A+COL3B) as COL3,
             COL4 as COL4NAME, count(COL5NO) as COL5,
             DENSE_RANK() OVER (ORDER BY COL1) as GROUPID
      from TAB
      group by COL1, COL2, COL4
     ) t
where GROUPID IN (1, 2)
group by col2name;