Re: sequential scans on few columns tables

From: Tomasz Myrta <jasiek(at)klaster(dot)net>
To: Bruno Wolff III <bruno(at)wolff(dot)to>
Cc: pgsql-performance(at)postgresql(dot)org
Subject: Re: sequential scans on few columns tables
Date: 2003-06-16 20:32:32
Message-ID: 3EEE2960.9080707@klaster.net
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Dnia 2003-06-16 21:55, Użytkownik Bruno Wolff III napisał:
> On Mon, Jun 16, 2003 at 21:49:40 +0200,
> Tomasz Myrta <jasiek(at)klaster(dot)net> wrote:
>
>>Hi
>>Recently I was wondering about tables difficult to index. Example -
>>queries with "ilike" where clauses. Without additional contrib modules
>>the only way to search such tables is sequential scan (am I right?)
>
>
> You might be able to use a functional index depending on exactly what your
> search patterns are like.
Probably functional indexes won't be helpful to find _substrings_.
Tomasz

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