Re: Bitmap Indexes: request for feedback

From: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
To: Simon Riggs <simon(at)2ndQuadrant(dot)com>
Cc: Gregory Stark <stark(at)enterprisedb(dot)com>, josh(at)agliodbs(dot)com, pgsql-hackers(at)postgresql(dot)org, Gianni Ciolli <gianni(dot)ciolli(at)2ndquadrant(dot)it>, Gabriele Bartolini <gabriele(dot)bartolini(at)2ndquadrant(dot)it>
Subject: Re: Bitmap Indexes: request for feedback
Date: 2008-10-22 12:31:43
Message-ID: 6412.1224678703@sss.pgh.pa.us
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Simon Riggs <simon(at)2ndQuadrant(dot)com> writes:
> On Wed, 2008-10-22 at 00:00 +0100, Gregory Stark wrote:
>> When we last left our heros they were proposing ways to refactor the index api
>> to allow index ams to stream results to the executor in bitmap form.

> The indexAM API has now been changed, so that is a simple matter now.

No, that was merely one component of the problem. The APIs for
tidbitmaps need revision too. You can't "stream" a bitmap yet.

regards, tom lane

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