The following bug has been logged online:
Bug reference: 2251
Logged by: Sergei Dubov
Email address: [EMAIL PROTECTED]
PostgreSQL version: 8.1.2
Operating system: Windows XP
Description: NOT IN clause is not working correctly
Details:
I have two tables, let's say A and B.
B is a child of a in one to many relationship. A contains records that are
not referenced by B.
I am running a query:
select * from A t1 where t1.id not in (select t2.A_id from B t2);
It returns 0 rows.
Now I run
(select t1.id from A t1) except (select t2.A_id from B t2);
And now Postgres correctly returns records from A that are not referenced by
B.
Thanks a lot for your consideration of this bug.
Serge.
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