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Cc: Tom Lane <tgl@sss.pgh.pa.us>, Robert Haas <robertmhaas@gmail.com>,
	Bruce Momjian <bruce@momjian.us>, Kris Jurka <books@ejurka.com>,
	pgsql-performance <pgsql-performance@postgresql.org>
Subject: Re: No hash join across partitioned tables?
From: Alvaro Herrera <alvherre@commandprompt.com>
To: Samuel Gendler <sgendler@ideasculptor.com>
In-reply-to: <AANLkTim1+h8jgOV6iEoN8OxF19MTb+wHFDMP8_tKdONp@mail.gmail.com>
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	<603c8f071003020816j77b3ec63wbad0415df003c0f1@mail.gmail.com>
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	<AANLkTinx8lLTEKWcyEQ1rxVz6WMJVKNezfXW5TKnNAU6@mail.gmail.com>
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Date: Sat, 16 Oct 2010 12:29:39 -0300
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Excerpts from Samuel Gendler's message of sáb oct 16 02:35:46 -0300 2010:

> An issue with automatically analyzing the entire hierarchy is 'abstract'
> table definitions.  I've got a set of tables for storing the same data at
> different granularities of aggregation.  Within each granularity, I've got
> partitions, but because the set of columns is identical for each
> granularity, I've got an abstract table definition that is inherited by
> everything.  I don't need or want statistics kept on that table because I
> never query across the abstract table, only the parent table of each
> aggregation granularity

Hmm, I think you'd be better served by using LIKE instead of regular
inheritance.

-- 
Álvaro Herrera <alvherre@commandprompt.com>
The PostgreSQL Company - Command Prompt, Inc.
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