From: Richard Broersma <richard.broersma@gmail.com>
To: Zintrigue <zintrigue@gmail.com>
Cc: pgsql-performance@postgresql.org
Subject: Re: noob inheritance question
Date: Wed, 6 Jan 2010 16:00:11 -0800
Message-ID: <396486431001061600h69360a21xb7cf05677308ca26@mail.gmail.com> (raw)
In-Reply-To: <22f7878e1001061553j69b3b461hadd4633c58c5304f@mail.gmail.com>
References: <22f7878e1001061553j69b3b461hadd4633c58c5304f@mail.gmail.com>
On Wed, Jan 6, 2010 at 3:53 PM, Zintrigue <zintrigue@gmail.com> wrote:
> I'm wondering if there's any performance penalty here, analogous to the
> penalty of JOINs in a regular RDBMS (versus an ORDBMS).
> If anyone can offer in any insight as too how inheritance is actually
> executed (compared to JOINs especially), I'd be most grateful.
PostgreSQL inheritance is just a sugar coated form of horizontal table
partitioning. So it suffers from all of the problems associated with
selection on UNION ALL queries.
--
Regards,
Richard Broersma Jr.
Visit the Los Angeles PostgreSQL Users Group (LAPUG)
http://pugs.postgresql.org/lapug
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To: pgsql-performance@postgresql.org
Cc: richard.broersma@gmail.com, zintrigue@gmail.com
Subject: Re: noob inheritance question
In-Reply-To: <396486431001061600h69360a21xb7cf05677308ca26@mail.gmail.com>
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