在SQL Oracle中进行汇总分组

Question

在下表中，我需要对按COL2NAME分组的COL3和COL5求和。 因此，将有3行：

DC
Cred
Equi

...具有COL3和COL5的总和。

我该怎么办？

这是屏幕截图中的查询：

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

因此，只需添加一个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;