Re: Table inheritance foreign key problem

From: David Fetter <david(at)fetter(dot)org>
To: Andy Chambers <achambers(at)mcna(dot)net>
Cc: "Postgresql (General)" <pgsql-general(at)postgresql(dot)org>
Subject: Re: Table inheritance foreign key problem
Date: 2010-12-22 17:20:53
Message-ID: 20101222172053.GB16815@fetter.org
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On Wed, Dec 22, 2010 at 12:32:44AM -0500, Andy Chambers wrote:
> Hi,
>
> One of the caveats described in the documentation for table
> inheritance is that foreign key constraints cannot cover the case
> where you want to check that a value is found somewhere in a table
> or in that table's descendants. It says there is no "good"
> workaround for this.

For some values of, "good," there actually is.

http://people.planetpostgresql.org/dfetter/index.php?/archives/51-Partitioning-Is-Such-Sweet-Sorrow.html
http://people.planetpostgresql.org/dfetter/index.php?/archives/59-Partitioning-Glances.html

Cheers,
David (hoping PostgreSQL will be able to infer how to automate this some day).
--
David Fetter <david(at)fetter(dot)org> http://fetter.org/
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