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Re: Postgresql 8.1.4 - performance issues for select on view using max

From: Ioana Danes <ioanasoftware(at)yahoo(dot)ca>
To: Ioana Danes <ioanasoftware(at)yahoo(dot)ca>, Dimitri Fontaine <dim(at)dalibo(dot)com>, pgsql-performance(at)postgresql(dot)org
Cc: Ioana Danes <ioanasoftware(at)yahoo(dot)ca>
Subject: Re: Postgresql 8.1.4 - performance issues for select on view using max
Date: 2006-10-18 21:02:01
Message-ID: 20061018210201.56435.qmail@web55907.mail.re3.yahoo.com (view raw or flat)
Thread:
Lists: pgsql-performance
Hello,

I tried the partitioning scenario but I've got into
the same problem. The max function is not using the
indexes on the two partitioned tables...

Any other thoughts?

--- Ioana Danes <ioanasoftware(at)yahoo(dot)ca> wrote:

> Thanks a lot I will give it a try. 
> 
> --- Dimitri Fontaine <dim(at)dalibo(dot)com> wrote:
> 
> > Hi,
> > 
> > Le mercredi 18 octobre 2006 21:51, Ioana Danes a
> > écrit :
> > > I am doing a test for a scenario where I have 2
> > > schemas  one (public) for the operational data
> and
> > > another one (archive) for old, archived data. So
> > > basically I want to split the data from some
> huge
> > > tables in two. All data before 2006 in archive
> and
> > all
> > > data after and including  2006 in public.
> > [...]
> > > I got into a scenario where my plan does not
> work
> > > without doing code change.
> > 
> > This sounds a lot as a ddl partitionning, you may
> > want to add some checks to 
> > your schema and set constraint_exclusion to on in
> > your postgresql.conf.
> > 
> > Please read following documentation material :
> >  
> >
>
http://www.postgresql.org/docs/8.1/interactive/ddl-partitioning.html
> > 
> > Regards,
> > -- 
> > Dimitri Fontaine
> > http://www.dalibo.com/
> > 
> 
> 
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Subject: Re: Postgresql 8.1.4 - performance issues for select on
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Subject: Re: [PERFORM] autovacuum on a -mostly- r/o table

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