I'm interested in finding the minimim A.id such that the following holds:
select A.charge , B.user_id , C.employee_id
from A
inner join B using (user_id)
inner join C using (employee_id)
except
select X.charge , Y.user_id , Z.employee_id
from X
inner join Y using (user_id)
inner join Z using (employee_id)
--
I can't do the following, since the number of selected columns have to match:
select A.id , A.charge , B.user_id , C.employee_id
from A
inner join B using (user_id)
inner join C using (employee_id)
except
select X.charge , Y.user_id , Z.employee_id
from X
inner join Y using (user_id)
inner join Z using (employee_id)
Can someone help me with the query?
Thanks in advance.
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