Re: Having a 2-column uniqueness constraint - Mailing list pgsql-general

On 22 Jul 2003 at 9:29, VanL wrote:
> Put another way, how can I set a (domain_name, mid) UNIQUE constraint?

Set the two fields non-NULL and create a composite unique index on them. That's
what a primary key enforces.

Bye
 Shridhar

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