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Re: Typecast bug?

From: "Frank Joerdens" <frank(at)joerdens(dot)de>
To: "Craig James" <craig_james(at)emolecules(dot)com>
Cc: pgsql-performance(at)postgresql(dot)org
Subject: Re: Typecast bug?
Date: 2008-06-26 07:02:13
Message-ID: (view raw, whole thread or download thread mbox)
Lists: pgsql-performance
On 6/26/08, Craig James <craig_james(at)emolecules(dot)com> wrote:
> This seems like a bug to me, but it shows up as a performance problem.
> Since the column being queried is an integer, the second query (see below)
> can't possibly match, yet Postgres uses a typecast, forcing a full table
> scan for a value that can't possibly be in the table.

Which version are you using? 8.3 removes a lot of implicit casts (all?
not sure), so this may already be your fix.



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