Re: Bitmap index thoughts

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От mark@mark.mielke.cc
Тема Re: Bitmap index thoughts
Дата
Msg-id 20061227204436.GA17687@mark.mielke.cc
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Ответ на Re: Bitmap index thoughts  (Heikki Linnakangas <heikki@enterprisedb.com>)
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On Wed, Dec 27, 2006 at 03:42:36PM +0000, Heikki Linnakangas wrote:
> >I wonder what would happen if somebody implemented automatic index
> >exclusion conditions after use of an INDEX proved to be in the realm
> >of the worst case scenario? :-)
> I'm sorry, I don't understand that sentence...

I was joking about a rather magical automatic INDEX restriction
modifier. For example, if the index becomes large enough to matter
(100 Mbytes?) and any single key takes up more than, say, 20% of the
index, it might be cool if it would automatically add the value to
the restriction list, and prune the now wasted index records.

Sorry for inserting a silly joke in a serious discussion... :-)

Cheers,
mark

-- 
mark@mielke.cc / markm@ncf.ca / markm@nortel.com     __________________________
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                          http://mark.mielke.cc/



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