From: Mario Splivalo <mario.splivalo@mobart.hr>
To: Michael Glaesemann <grzm@seespotcode.net>
Cc: pgsql-sql@postgresql.org
Subject: Re: Views and query planner
Date: Fri, 30 Jun 2006 15:23:42 +0200
Message-ID: <1151673822.27032.9.camel@localhost.localdomain> (raw)
In-Reply-To: <2D1768EE-58E1-4260-A940-3ED78D560EAB@seespotcode.net>
References: <1151670948.27032.5.camel@localhost.localdomain>
<2D1768EE-58E1-4260-A940-3ED78D560EAB@seespotcode.net>
On Fri, 2006-06-30 at 21:47 +0900, Michael Glaesemann wrote:
> On Jun 30, 2006, at 21:35 , Mario Splivalo wrote:
>
> > Is postgres going to make one query plan, or each view has it own
> > query
> > plan?
>
> Have you taken a look at the EXPLAIN ANALYZE output of the queries?
> You can see exactly which plan PostgreSQL will use.
>
So, the performance will be the same if I use view on view, or I create
big select with those view definitions.
Mario
--
Mario Splivalo
Mob-Art
mario.splivalo@mobart.hr
"I can do it quick, I can do it cheap, I can do it well. Pick any two."
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To: pgsql-sql@postgresql.org
Cc: mario.splivalo@mobart.hr, grzm@seespotcode.net
Subject: Re: Views and query planner
In-Reply-To: <1151673822.27032.9.camel@localhost.localdomain>
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