Re: DELETE using an outer join

From: Thomas Kellerer <spam_eater(at)gmx(dot)net>
To: pgsql-sql(at)postgresql(dot)org
Subject: Re: DELETE using an outer join
Date: 2012-07-20 08:17:27
Message-ID: jub46t$fl1$1@dough.gmane.org
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Tom Lane, 19.07.2012 16:52:
> If you're using a reasonably recent version of PG, replacing the NOT IN
> by a NOT EXISTS test should also help.

Thanks. I wasn't aware of that (and the NOT EXISTS does indeed produce the same plan as the OUTER JOIN solution)

>> Now I was wondering if a DELETE statement could be rewritten with the same "strategy":
>
> Not at the moment. There have been discussions of allowing the same
> table name to be respecified in USING, but there are complications.

Thanks as well. It's not a big deal for me. I was just curious if I missed something.

Regards
Thomas

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