| From: | "A(dot) Kretschmer" <andreas(dot)kretschmer(at)schollglas(dot)com> |
|---|---|
| To: | pgsql-general(at)postgresql(dot)org |
| Subject: | Re: CHECK() Constraint on Column Using Lookup Table |
| Date: | 2007-05-01 18:03:02 |
| Message-ID: | 20070501180302.GA16232@a-kretschmer.de |
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| Lists: | pgsql-general |
am Tue, dem 01.05.2007, um 10:41:44 -0700 mailte Rich Shepard folgendes:
> I've seen the syntax for using a lookup table in a CHECK() constraint, but
> I cannot find a reference to it. It's not in Section 5.3.1 of the 8.2 docs.
>
> Specifically, I want to reference a table of ISO 2-letter codes for US
> states and Canadian provinces/territories in a table with name and address
> columns.
>
> Please point me to a reference.
How about with a simple foreign key? (Section 5.3.5 of the 8.2 docs)
Andreas
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Andreas Kretschmer
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