Re: Index-only-scans, indexam API changes

From: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
To: Heikki Linnakangas <heikki(dot)linnakangas(at)enterprisedb(dot)com>
Cc: PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: Index-only-scans, indexam API changes
Date: 2009-07-13 14:18:49
Message-ID: 22904.1247494729@sss.pgh.pa.us
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Heikki Linnakangas <heikki(dot)linnakangas(at)enterprisedb(dot)com> writes:
> At the moment, amgettuple only returns pointers to heap tuples. There is
> no way to return data from the index tuples. That needs to be changed to
> support index-only scans.

What are you going to do for index types that don't store the original
data (e.g. hash)?

regards, tom lane

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