Hi,
I've 2 tables:
TABLE AX:
ID NUMBER PK

TABLE BX:
ID NUMBER FK

TABLE A HAS 2000 RECORDS
TABLE B HAS 3500 RECORDS

I'd like to write a query to find 1500 record not equal.

I tried this:
select a.id, b.id
from ax a, bx b
where a.id <> b.id
group by a.id, b.id


but It not run correctly

How can I write this query??

Thanks
Raf