On Tue, Feb 18, 2003 at 09:19:08 +1300,
Andrew McMillan <andrew@catalyst.net.nz> wrote:
>
> At some point in the future you will be able to create a domain for this
> sort of thing, but PostgreSQL does not currently support CHECK
> constraints on domains :-(
When 7.4 gets released check constraints on domains will be available.
The feature is already available in the 7.4 CVS.