From: Ivan Voras <ivoras@fer.hr>
To: Rod Taylor <rbt@rbt.ca>
Cc: pgsql-performance@postgresql.org
Subject: Re: Optimizing DELETE
Date: Tue, 19 Sep 2006 22:39:42 +0200
Message-ID: <4510558E.7020205@fer.hr> (raw)
In-Reply-To: <1158673987.71040.24.camel@home>
References: <450FEF1A.4070106@fer.hr>
<1158673987.71040.24.camel@home>
Rod Taylor wrote:
> On Tue, 2006-09-19 at 15:22 +0200, Ivan Voras wrote:
>> I've just fired off a "DELETE FROM table" command (i.e. unfiltered
>> DELETE) on a trivially small table but with many foreign key references
>> (on similar-sized tables), and I'm waiting for it to finish. It's been
>> 10 minutes now, which seems very excessive for a table of 9000 rows on a
>> 3 GHz desktop machine.
>
> I would guess that a few of those referenced tables are missing indexes
> on the referenced column.
Yes, it was a pilot error :(
Among the small and properly indexed referencing tables there was a
seldom queried but huge log table.
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To: pgsql-performance@postgresql.org
Cc: ivoras@fer.hr, rbt@rbt.ca
Subject: Re: Optimizing DELETE
In-Reply-To: <4510558E.7020205@fer.hr>
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