Sergiy Vyshnevetskiy <serg@vostok.net> writes:
> This should fix the problem.
No, not at all. Consider if you'd written a domain CHECK constraint
that rejects nulls, instead of the easy case. What we'd really have
to do here is see if domain_in() will accept a NULL.
I'm starting to get the feeling that the entire idea of NOT NULL domains
is broken :-(
regards, tom lane