Skip site navigation (1) Skip section navigation (2)

Re: Very slow left outer join

From: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
To: "Tyrrill, Ed" <tyrrill_ed(at)emc(dot)com>
Cc: "Klint Gore" <kg(at)kgb(dot)une(dot)edu(dot)au>, pgsql-performance(at)postgresql(dot)org
Subject: Re: Very slow left outer join
Date: 2007-05-30 16:59:11
Message-ID: (view raw, whole thread or download thread mbox)
Lists: pgsql-performance
"Tyrrill, Ed" <tyrrill_ed(at)emc(dot)com> writes:
> I did a vacuum analyze after inserting all the data.  Is there possibly
> a bug in analyze in 8.1.5-6?  I know it says rows=3D436915, but the last
> time the backup_location table has had that little data in it was a
> couple months ago, and analyze has been run many times since then.
> Currently it has over 160 million rows.

Possibly you need a larger statistics target for that table.

			regards, tom lane

In response to

pgsql-performance by date

Next:From: DimitriDate: 2007-05-30 18:19:56
Subject: Re: Bad RAID1 read performance
Previous:From: Tyrrill, EdDate: 2007-05-30 16:55:10
Subject: Re: Very slow left outer join

Privacy Policy | About PostgreSQL
Copyright © 1996-2018 The PostgreSQL Global Development Group