Re: How can I speed up this query?

From: Martijn van Oosterhout <kleptog(at)svana(dot)org>
To: Pat Maddox <pergesu(at)gmail(dot)com>
Cc: pgsql-general(at)postgresql(dot)org
Subject: Re: How can I speed up this query?
Date: 2006-06-28 08:05:11
Message-ID: 20060628080511.GB29253@svana.org
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On Wed, Jun 28, 2006 at 01:52:10AM -0600, Pat Maddox wrote:
> I end up calling this query quite often, so I need a way to speed it
> up. Don't know if I can take advantage of indexes or better joins or
> something (I don't even know if there are better joins), I'm really a
> newbie to DB stuff. Hoping somebody can help me make this much
> quicker.

<snip>
> -> Index Scan using
> trainer_hand_results_trainer_scenario_id_index on trainer_hand_results
> r (cost=0.00..19.12 rows=570 width=44) (actual time=415.677..420.197
> rows=578 loops=1)

That's an awful long time to find a few rows in a table via an index.
How big is this table/index?

What version is this? If you have a older version perhaps you're
suffering from index bloat and you need to REINDEX that table/index.

Hope this helps,
--
Martijn van Oosterhout <kleptog(at)svana(dot)org> http://svana.org/kleptog/
> From each according to his ability. To each according to his ability to litigate.

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