Re: Covering Indexes

From: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
To: Csaba Nagy <ncslists(at)googlemail(dot)com>
Cc: Jeff Janes <jeff(dot)janes(at)gmail(dot)com>, "David E(dot) Wheeler" <david(at)justatheory(dot)com>, Pg Hackers <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: Covering Indexes
Date: 2012-07-06 14:54:43
Message-ID: 27788.1341586483@sss.pgh.pa.us
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Csaba Nagy <ncslists(at)googlemail(dot)com> writes:
> Why not restrict it to UNIQUE indexes ?

What benefit would such a restriction provide? AFAICS it doesn't make
implementation any easier.

regards, tom lane

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