Deferred partial/expression unique constraints

From: Andres Freund <andres(at)anarazel(dot)de>
To: pgsql-hackers(at)postgresql(dot)org
Cc: Dean Rasheed <dean(dot)a(dot)rasheed(at)googlemail(dot)com>
Subject: Deferred partial/expression unique constraints
Date: 2011-07-12 16:46:22
Message-ID: 3672090.xE5MGnDR68@alap2
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Hi,

I guess $subject wasn't implemented because plain unique indexes aren't
represented in pg_constraint and thus do not have a place to store information
about being deferred?
Other than that I do not see any special complications in implementing it?

Is there any reasons not to store unique indexes in pg_constraint in the
future?

Greetings,

Andres

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