Re: Adding ON UPDATE CASCADE to an existing foreign key

From: Rich Doughty <rich(at)opusvl(dot)com>
To: Stephan Szabo <sszabo(at)megazone(dot)bigpanda(dot)com>
Cc: pgsql-general(at)postgresql(dot)org
Subject: Re: Adding ON UPDATE CASCADE to an existing foreign key
Date: 2006-05-05 08:53:49
Message-ID: 445B129D.8090405@opusvl.com
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Stephan Szabo wrote:
> On Thu, 4 May 2006, Rich Doughty wrote:
>
>
>>I have a foreign key constraint that I'd like to alter. I'd rather not
>>drop and re-create it due to the size of the table involved. All I need
>>to do is add an ON UPDATE CASCADE.
>>
>>Is it ok to set confupdtype to 'c' in pg_constraint (and will this be
>>all that's needed) or is it safer to drop and recreate the constraint?
>
>
> I don't think that's going to work, you'd probably need to change the
> function associated with the trigger involved too. It's probably safer to
> do the drop and create.

ok, thanks.

--

- Rich Doughty

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