Re: plans for bitmap indexes?

From: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
To: Josh Berkus <josh(at)agliodbs(dot)com>
Cc: pgsql-hackers(at)postgresql(dot)org, "Zeugswetter Andreas DAZ SD" <ZeugswetterA(at)spardat(dot)at>, "Chris Browne" <cbbrowne(at)acm(dot)org>
Subject: Re: plans for bitmap indexes?
Date: 2004-10-13 18:03:15
Message-ID: 16237.1097690595@sss.pgh.pa.us
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Josh Berkus <josh(at)agliodbs(dot)com> writes:
> BTW, Tom, I was talking to Sean last night and he was saying that our
> current planner cost calculations assume that a 2-column index fetch
> will be twice as expensive as a 1-column index fetch. Is this right?

No.

regards, tom lane

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