Re: Slow Query- Bad Row Estimate - Mailing list pgsql-performance

From Ozer, Pam
Subject Re: Slow Query- Bad Row Estimate
Date
Msg-id 216FFB77CBFAEE4B8EE4DF0A939FF1D101835B@mail-001.corp.automotive.com
Whole thread Raw
In response to Re: Slow Query- Bad Row Estimate  (Tom Lane <tgl@sss.pgh.pa.us>)
List pgsql-performance
Its 8.4.  On the column stats_target=-1 before I changed it.  AutoVacuum
is set to on.  I actually did a full analyze of the database and then
ran it again.  So what am I missing?

-----Original Message-----
From: Tom Lane [mailto:tgl@sss.pgh.pa.us]
Sent: Friday, October 29, 2010 3:03 PM
To: Ozer, Pam
Cc: Josh Berkus; pgsql-performance@postgresql.org
Subject: Re: [PERFORM] Slow Query- Bad Row Estimate

"Ozer, Pam" <pozer@automotive.com> writes:
> Yes.  The default statistics target was at 1000.  So that would be
what the column was using correct?

But you evidently didn't have stats.  Perhaps you have autovacuum turned
off?  What PG version is this anyway?

            regards, tom lane

pgsql-performance by date:

Previous
From: Tom Lane
Date:
Subject: Re: Slow Query- Bad Row Estimate
Next
From: Marti Raudsepp
Date:
Subject: Defaulting wal_sync_method to fdatasync on Linux for 9.1?