From: Kevin Grittner <Kevin.Grittner@wicourts.gov>
To: Jim C. Nasby <jnasby@pervasive.com>
To: Tom Lane <tgl@sss.pgh.pa.us>
To: Kevin Grittner <Kevin.Grittner@wicourts.gov>
Cc: pgsql-hackers@postgresql.org
Cc: pgsql-performance@postgresql.org
Subject: Re: [PERFORM] temporary indexes
Date: Tue, 28 Feb 2006 11:55:32 -0600
Message-ID: <44043A34.EE98.0025.0@wicourts.gov> (raw)
In-Reply-To: <440435BC.EE98.0025.0@wicourts.gov>
References: <44041B68.EE98.0025.0@wicourts.gov>
<20060228164515.GS82012@pervasive.com>
<20060228164515.GS82012@pervasive.com>
<16076.1141146348@sss.pgh.pa.us>
<440435BC.EE98.0025.0@wicourts.gov>
>>> On Tue, Feb 28, 2006 at 11:36 am, in message
<440435BC.EE98.0025.0@wicourts.gov>, "Kevin Grittner"
> Also, EXISTS works in situations where
> you need to compare on multiple columns, so it is useful in many
> situations where EXISTS or MIN/MAX techniques just don't work.
Sorry. That should have read:
EXISTS works in situations where
you need to compare on multiple columns, so it is useful in many
situations where IN or MIN/MAX techniques just don't work.
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To: pgsql-performance@postgresql.org
Cc: Kevin.Grittner@wicourts.gov, jnasby@pervasive.com, tgl@sss.pgh.pa.us, pgsql-hackers@postgresql.org
Subject: Re: [PERFORM] temporary indexes
In-Reply-To: <44043A34.EE98.0025.0@wicourts.gov>
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