Re: Domains as Subtypes

[Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>]

elein <elein(at)varlena(dot)com> writes:
> But I like the idea of centralizing the check in the input/output
> functions.  It seems clearer and cleaner.

I remembered the problem with doing it that way: an input function can't
enforce a domain NOTNULL constraint, because it won't even get invoked
for a null input value.  So there seems no way around having a special
case for domains in all places where I/O conversion is done.

			regards, tom lane