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Re: domains, types, constraints - Mailing list pgsql-novice

From Tom Lane
Subject Re: domains, types, constraints
Date
Msg-id 6056.1201028793@sss.pgh.pa.us
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In response to Re: domains, types, constraints  (Andrew Winkler <the_andrew_winkler@yahoo.com>)
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Andrew Winkler <the_andrew_winkler@yahoo.com> writes:
> Can unique only reference columns?

Yup, that's what the SQL spec syntax says.

Instead, use CREATE UNIQUE INDEX.

            regards, tom lane

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