Re: Optimizing DELETE
Ivan Voras <ivoras@fer.hr>
From: Ivan Voras <ivoras@fer.hr>
To: Rod Taylor <rbt@rbt.ca>
Cc: pgsql-performance@postgresql.org
Date: 2006-09-19T20:39:42Z
Lists: pgsql-performance
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.