From: Steinar H. Gunderson <sgunderson@bigfoot.com>
To: Jan Kesten <jan.kesten@web.de>
Cc: pgsql-performance@postgresql.org
Subject: Re: Improving performance on multicolumn query
Date: Wed, 9 Nov 2005 14:00:17 +0100
Message-ID: <20051109130017.GA9229@uio.no> (raw)
In-Reply-To: <4371E6A7.50808@web.de>
References: <4371E6A7.50808@web.de>
On Wed, Nov 09, 2005 at 01:08:07PM +0100, Jan Kesten wrote:
> First, I'm using postgresql 7.4.7 on a 2GHz machine having 1.5GByte RAM
> and I have a table with about 220 columns and 20000 rows - and the first
> five columns build a primary key (and a unique index).
I forgot this, but it should be mentioned: A primary key works as an
unique index, so you don't need both.
/* Steinar */
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Homepage: http://www.sesse.net/
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To: pgsql-performance@postgresql.org
Cc: sgunderson@bigfoot.com, jan.kesten@web.de
Subject: Re: Improving performance on multicolumn query
In-Reply-To: <20051109130017.GA9229@uio.no>
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