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Re: Modifying an existing constraint?

From: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
To: Lynna Landstreet <lynna(at)gallery44(dot)org>
Cc: pgsql-novice(at)postgresql(dot)org
Subject: Re: Modifying an existing constraint?
Date: 2004-06-05 04:46:37
Message-ID: 14983.1086410797@sss.pgh.pa.us (view raw or flat)
Thread:
Lists: pgsql-novice
Lynna Landstreet <lynna(at)gallery44(dot)org> writes:
> Does anyone know if it's possible to modify an existing table constraint -
> for example, to add "ON DELETE CASCADE" to an existing foreign key
> constraint? Or would I have to recreate the table to add that?

There's no command to modify a foreign key constraint like that, but you
should be able to drop and re-add that single constraint using ALTER TABLE.
I don't see a reason to recreate the whole table...

			regards, tom lane

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Subject: Re: ON DELETE CASCADE (was: Modifying an existing
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