| From: | "Josh Berkus" <josh(at)agliodbs(dot)com> |
|---|---|
| To: | Cedar Cox <cedarc(at)visionforisrael(dot)com>, pgsql-sql(at)postgresql(dot)org |
| Subject: | Re: REFERENCES constraint |
| Date: | 2001-08-08 16:30:43 |
| Message-ID: | web-98848@davinci.ethosmedia.com |
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| Thread: | |
| Lists: | pgsql-sql |
Cedar,
(sorry for the double posting, folks)
> 2. Can a column reference another column in the same table? eg..
>
> CREATE TABLE bloo (
> id int4,
> p_id int4 REFERENCES bloo (id)
> -- or
> --p_id int4 REFERENCES (id)
> )
You don't do this with REFERENCES ... you do it with a CHECK CONSTRAINT
(look it up in the docs).
-Josh Berkus
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