Re: Incorrect handling of IS [NOT] NULL quals on inheritance parents

David Rowley <dgrowleyml@gmail.com> writes:
> I think a better fix is just to not apply the optimisation for
> inheritance RTEs in add_base_clause_to_rel().

Is it worth paying attention to whether the constraint is marked
connoinherit?  If that involves an extra syscache fetch, I'd tend to
agree that it's not worth it; but if we can get that info for free
it seems worthwhile to not break this for inheritance cases.

            regards, tom lane