Re: [PERFORM] Query in 9.0.2 not using index in 9.0.0 works fine

2011-07-06 Thread Samuel Gendler
On Wed, Jul 6, 2011 at 5:50 AM, Matthias Howell wrote: > > > However, in the end, it was user brain damage. > > ** ** > > It does use the doc id index for the subquery, but for some reason, the > primary key on sentences - the sentenceid - was not set. So in fact, there > is no index. > >

Re: [PERFORM] Query in 9.0.2 not using index in 9.0.0 works fine

2011-07-06 Thread Matthias Howell
From: Samuel Gendler [mailto:sgend...@ideasculptor.com] Sent: Wednesday, July 06, 2011 3:43 AM To: Matthias Howell Cc: pgsql-performance@postgresql.org Subject: Re: [PERFORM] Query in 9.0.2 not using index in 9.0.0 works fine On Tue, Jul 5, 2011 at 1:50 PM, Matthias Howell wrote

Re: [PERFORM] Query in 9.0.2 not using index in 9.0.0 works fine

2011-07-06 Thread Samuel Gendler
On Tue, Jul 5, 2011 at 1:50 PM, Matthias Howell wrote: > I've just copied a database from one linux machine to another. > > "Fast" machine is CentOS 5.5, running postgres 9.0.0 64 bit > > ** ** > > "Slow" machine is Red Hat 5.5 running postgres 9.0.2 64 bit. > > ** ** > > Here's the q