From: | Oleg Bartunov <oleg(at)sai(dot)msu(dot)su> |
---|---|
To: | Yann Michel <yann-postgresql(at)spline(dot)de> |
Cc: | Dave Page <dpage(at)vale-housing(dot)co(dot)uk>, Reini Urban <rurban(at)x-ray(dot)at>, pgsql-hackers(at)postgresql(dot)org |
Subject: | Re: plans for bitmap indexes? |
Date: | 2004-10-08 10:09:54 |
Message-ID: | Pine.GSO.4.61.0410081408550.23275@ra.sai.msu.su |
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Lists: | pgsql-hackers |
On Fri, 8 Oct 2004, Yann Michel wrote:
> Hi,
>
> On Fri, Oct 08, 2004 at 10:09:18AM +0100, Dave Page wrote:
>> I think what Reini was asking was why do you think you need bitmap
>> indexes as opposed to any existing type?
>
> due to I'm developing a datawarehousing application we have lots of
> fact-data in our central fact-table. As I know how to improve
> performance on Oracle based datawarehouses, I'm used to add bitmap
> indexes for atributes having only a few distinct values.
> So I was looking for any comparable indexing technology but didn't find
> any so far.
Yann, you may try our contrib/intarray module
>
> Regards,
> Yann
>
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Regards,
Oleg
_____________________________________________________________
Oleg Bartunov, sci.researcher, hostmaster of AstroNet,
Sternberg Astronomical Institute, Moscow University (Russia)
Internet: oleg(at)sai(dot)msu(dot)su, http://www.sai.msu.su/~megera/
phone: +007(095)939-16-83, +007(095)939-23-83
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