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List:       postgresql-sql
Subject:    Re: [SQL] Query Problem
From:       Josh Berkus <josh () agliodbs ! com>
Date:       2000-10-26 17:55:06
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Michael,

> SELECT Data
> FROM Table A
> WHERE NOT EXISTS (
>     SELECT * FROM Table_B, Table_C
>     WHERE Table_B.GroupID = TableC.GroupID
>     AND TableC.AccountID = 11
> )
> 
> I think that the not exists is a bit quicker than the NOT IN.  Give it
> a whirl.

A *lot* faster.  Like, 7x as fast. I'd forgotten about EXISTS, since I
so seldom have a use for it ... but this is shy it was created, I guess.

Thanks so much for your help!

					-Josh Berkus
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