From: | "Dmitry Teslenko" <dteslenko(at)gmail(dot)com> |
---|---|
To: | pgsql-general(at)postgresql(dot)org |
Subject: | Re: Strange query plan |
Date: | 2008-08-14 14:55:43 |
Message-ID: | 91325fec0808140755v42a95803xda0b03f354fb35c3@mail.gmail.com |
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Thread: | |
Lists: | pgsql-general |
On Thu, Aug 14, 2008 at 18:47, Scott Marlowe <scott(dot)marlowe(at)gmail(dot)com> wrote:
> What does "explain analyze select.... (your query here)" have to say?
>
Expalin analyze says it makes sequential scan on a table table1.
On Thu, Aug 14, 2008 at 18:48, Gauthier, Dave <dave(dot)gauthier(at)intel(dot)com> wrote:
> Try this...
>
> Set default_statistics_target to be 1000 in postgres.conf then reboot
> your pg server. "Analyze" the table. Try the query again.
>
> If that fails, drop the index on (field1, field3) and recreate the other
> way around (field3, field1). Analyze again and try the query.
>
> -dave
I've altered query and swapped field1 and field3 there, in where statement.
Seems that order doesn't matter.
--
A: Because it messes up the order in which people normally read text.
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