SQL : How can I use sub query in a query with group by section?

Question

How can I use sub query in a query with group by section?

I use SQL Server 2008 R2 AND Delphi 2010

I receive this error:

Cannot perform an aggreg         


        

Answer 1

You should be able to put your sub-query under FROM clause, following this general pattern:

SELECT TABLE1.ID, SUM(TABLE1.A), ROUND(SUM(T2.B1), 2)
FROM TABLE1, (SELECT SUM(B) B1 FROM TABLE2 WHERE ...) T2
GROUP BY TABLE1.ID

Trying to "translate" your query, you'll probably get something similar to this:

select 
    t1.sen, 
    sum(t1.d1)as d1, 
    sum(t1.d2)as d2, 
    sum(t1.d1+t1.d2) as d_sum,
    Round((sum((1000*(t1.d1+t1.d2))/(9500-(
        t2a.s
    )))),1) as SSS 
from 
    tbl1 t1,
    (
       select sum(t2.t_shab+t2.t_rooz) s
       from tbl1 t2 
       where FCode=81 AND DCode=1 AND t2.sen<=t1.sen
    ) t2a
where 
    FCode = 81 
    AND DCode = 1
group by
    t1.sen