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Re: CHECK() Constraint on Column Using Lookup Table - Mailing list pgsql-general

From A. Kretschmer
Subject Re: CHECK() Constraint on Column Using Lookup Table
Date
Msg-id 20070501180302.GA16232@a-kretschmer.de
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In response to CHECK() Constraint on Column Using Lookup Table  (Rich Shepard <rshepard@appl-ecosys.com>)
List pgsql-general
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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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