From: ow <oneway_111@yahoo.com>
To: Bruce Momjian <pgman@candle.pha.pa.us>
To: Tom Lane <tgl@sss.pgh.pa.us>
To: Stephan Szabo <sszabo@megazone.bigpanda.com>
Cc: pgsql-sql@postgresql.org
Subject: Re: pg 7.4.rc1, Range query performance
Date: Tue, 11 Nov 2003 03:46:39 -0800 (PST)
Message-ID: <20031111114639.15081.qmail@web21402.mail.yahoo.com> (raw)
In-Reply-To: <200311110513.hAB5D3325077@candle.pha.pa.us>
--- Bruce Momjian <pgman@candle.pha.pa.us> wrote:
> Tom Lane wrote:
> > Bruce Momjian <pgman@candle.pha.pa.us> writes:
> > > Sorry there isn't a simple solution.
> >
> > But there is: make an index with the column order (b,c,a).
>
> Oh, yea, right. If he puts the columns he is doing a straight equals
> comparison first, the 'a' comparison will work fine. Great.
>
Yes, I think Stephan Szabo was trying to convince me of something like that for
quite sometime; it was not clear to me then. I'll give it a try.
I still think "CREATE [CLUSTERED] INDEX" (or whatever) is an important feature
and should be implemented in pgSql. Locking large (or huge) tables for
prolonged periods of time may not be acceptable in many setups.
Thanks
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To: pgsql-sql@postgresql.org
Cc: oneway_111@yahoo.com, pgman@candle.pha.pa.us, tgl@sss.pgh.pa.us, sszabo@megazone.bigpanda.com
Subject: Re: pg 7.4.rc1, Range query performance
In-Reply-To: <20031111114639.15081.qmail@web21402.mail.yahoo.com>
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