I think I found a solution. Hopefully the system tables don't change
too much in the future.I just used pg_attrdef to tell me which columns
*not* to use.
I hope that's right. It seems to work.
Peter
On Sat, 2003-09-06 at 18:19, Tom Lane wrote:
> pw <[EMAIL PROTECTED]> writes:
> > I have a table with a serial type in it as a record id.
> > The type of this object comes back as int4 when I query via
> > pg_type.
> > How can I distinguish this counter type from just a plain int4?
>
> Well, you can't, because serial isn't actually a type in Postgres.
> As the manual tries to explain, serial is just a shorthand for
creating
> an integer column whose default is a nextval() call on a sequence.
> So the way to tell is to look for a default expression of that kind.
>
> regards, tom lane
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