Posted by KrunoG on 10/01/16 11:48

Hi,

I have a "simple" problem:

From the table "A" I have to exclude phone numbers present in table "B" and
those numbers that are also in the table "C"

So far I've used this sql that works only in A-B but I would like to have C
here aswell:
select o.PHONE
from B b, A a, C c
where b.phone(+)=a.phone
and b.phone is null

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