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Re: [PATCH] Support for foreign keys with arrays

From: Peter Eisentraut <peter_e(at)gmx(dot)net>
To: Merlin Moncure <mmoncure(at)gmail(dot)com>
Cc: Gabriele Bartolini <gabriele(dot)bartolini(at)2ndquadrant(dot)it>, PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org>, Marco Nenciarini <marco(dot)nenciarini(at)2ndquadrant(dot)it>
Subject: Re: [PATCH] Support for foreign keys with arrays
Date: 2011-11-25 04:52:45
Message-ID: 1322196765.23871.5.camel@vanquo.pezone.net (view raw or flat)
Thread:
Lists: pgsql-hackers
On mån, 2011-11-21 at 10:30 -0600, Merlin Moncure wrote:
> I like the idea of being able to define more flexible foreign keys,
> but are we gilding the lily here?  The proposed solution is really
> quite specific to the nuances of arrays.  Perhaps there is a more
> general expression based syntax that leaves the door open for other
> types conditions such as dealing fields dependent on other fields?

Yeah, basically you'd just need a contains and/or is-contained-by
operator between the two types.


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