I can't make this query work with SUM function
- by Mehper C. Palavuzlar
This query gives an error:
select ep,
case
when ob is null and b2b_ob is null then 'a'
when ob is not null or b2b_ob is not null then 'b'
else null
end as type,
sum(b2b_d + b2b_t - b2b_i) as sales
from table
where ...
group by ep, type
Error: ORA-00904: "TYPE": invalid identifier
When I run it with group by ep, the error message becomes:
ORA-00979: not a GROUP BY expression
The whole query works OK if I remove the lines sum(b2b_d+b2b_t-b2b_i) as sales and group by ..., so the problem should be related to SUM and GROUP BY functions. How can I make this work? Thanks in advance for your help.
