Re: TODO list request: FK to unique expression indexes

From: "Robert Haas" <robertmhaas(at)gmail(dot)com>
To: "Bruce Momjian" <bruce(at)momjian(dot)us>
Cc: "David E(dot) Wheeler" <david(at)kineticode(dot)com>, "Josh Berkus" <josh(at)agliodbs(dot)com>, "PG Hackers" <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: TODO list request: FK to unique expression indexes
Date: 2008-11-20 18:59:28
Message-ID: 603c8f070811201059q3eb84ceeo20cdd747e17b108c@mail.gmail.com
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> Allowing foreign keys to point to expression indexes seems to open a can
> of worms and I am not sure there is enough demand to warrant it.

It does open a can of worms. I've often wanting something related,
which is the ability to make a foreign key references a PARTIAL index.

...Robert

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