Re: plans for bitmap indexes?
От | Oleg Bartunov |
---|---|
Тема | Re: plans for bitmap indexes? |
Дата | |
Msg-id | Pine.GSO.4.61.0410081408550.23275@ra.sai.msu.su обсуждение исходный текст |
Ответ на | Re: plans for bitmap indexes? (Yann Michel <yann-postgresql@spline.de>) |
Список | 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 > > ---------------------------(end of broadcast)--------------------------- > TIP 2: you can get off all lists at once with the unregister command > (send "unregister YourEmailAddressHere" to majordomo@postgresql.org) > Regards, Oleg _____________________________________________________________ Oleg Bartunov, sci.researcher, hostmaster of AstroNet, Sternberg Astronomical Institute, Moscow University (Russia) Internet: oleg@sai.msu.su, http://www.sai.msu.su/~megera/ phone: +007(095)939-16-83, +007(095)939-23-83
В списке pgsql-hackers по дате отправления: