ORA-00904 "Invalid identifier” for an identifier in a group by clause

Question

with compiere database i am trying ro show

between two dates.

column:

designation

qty sale (depot) client sales

qty-sale

Answer 1

The problem is (at least) in the group by clause. Oracle does not allow column aliases in group by. You can readily fix this with a subquery:

select t.*
from (select . . .
      from . . .
      where . . .
     ) t
group by . . . 
order by . . . ;

In other words, put everything but the group by and order by in a subquery. Then put those clauses in the outer query.