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Re: Memory usage - indexes

From: Tobias Brox <tobixen(at)gmail(dot)com>
To: Mark Kirkwood <mark(dot)kirkwood(at)catalyst(dot)net(dot)nz>
Cc: pgsql-performance(at)postgresql(dot)org
Subject: Re: Memory usage - indexes
Date: 2010-09-24 20:00:03
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Lists: pgsql-performance
On 24 September 2010 00:12, Mark Kirkwood <mark(dot)kirkwood(at)catalyst(dot)net(dot)nz> wrote:
> Re index size, you could try indexes like:
> some_table(a)
> some_table(b)
> which may occupy less space, and the optimizer can bitmap and/or them to
> work like the compound index some_table(a,b).

Hm ... never considered that ... but is it cost effective on large
indexes?  I guess I should do some testing ...

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