Re: [SQL] Optimizing ORDER BY with indexes?

From: Bruce Momjian <pgman(at)candle(dot)pha(dot)pa(dot)us>
To: Dirk Lutzebaeck <lutzeb(at)aeccom(dot)com>
Cc: pgsql-sql(at)postgreSQL(dot)org
Subject: Re: [SQL] Optimizing ORDER BY with indexes?
Date: 2000-01-14 16:37:19
Message-ID: 200001141637.LAA01122@candle.pha.pa.us
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> Dirk Lutzebaeck writes:
> >
> > I'm forced to used ORDER BY on large tables which then takes quite
> > long. Is there a chance to create/optimize an index for ORDER BY?
> > Or could I write an index method on my own? How would it look like?
> >
> > Are there any other possiblities to speed up ORDER BY?
>
> Reading about indexes in the Bowman SQL book I think a
> _clustered index_ is needed for the problem above.
> Does Postgresql support these?
>

CLUSTER command.

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