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From: Tom Lane <tgl@sss.pgh.pa.us>
To: M.D.G. Lange <mlange@dltmedia.nl>
Cc: pgsql-sql@postgresql.org
Subject: Re: foreign key on pg_shadow
Date: Tue, 14 Jun 2005 09:37:22 -0400
Message-ID: <27838.1118756242@sss.pgh.pa.us> (raw)
In-Reply-To: <42AEC0C1.7090305@dltmedia.nl>
References: <42AEC0C1.7090305@dltmedia.nl>

"M.D.G. Lange" <mlange@dltmedia.nl> writes:
> No matter what ON DELETE constraint I created, the system will not allow 
> me to create a foreign key, as pg_shadow is a system catalog.

We do not support foreign keys (or indeed triggers of any kind) on
system catalogs.  I don't foresee that happening in the near future
either, though I think there is something about it on the TODO list.

			regards, tom lane



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