Re: pg 7.4.rc1, Range query performance

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Тема Re: pg 7.4.rc1, Range query performance
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Msg-id 20031111114639.15081.qmail@web21402.mail.yahoo.com
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Ответ на Re: pg 7.4.rc1, Range query performance  (Bruce Momjian <pgman@candle.pha.pa.us>)
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--- Bruce Momjian <pgman@candle.pha.pa.us> wrote:
> Tom Lane wrote:
> > Bruce Momjian <pgman@candle.pha.pa.us> writes:
> > > Sorry there isn't a simple solution.
> > 
> > But there is: make an index with the column order (b,c,a).
> 
> Oh, yea, right.  If he puts the columns he is doing a straight equals
> comparison first, the 'a' comparison will work fine.  Great.
> 

Yes, I think Stephan Szabo was trying to convince me of something like that for
quite sometime; it was not clear to me then. I'll give it a try.

I still think "CREATE [CLUSTERED] INDEX" (or whatever) is an important feature
and  should be implemented in pgSql. Locking large (or huge) tables for
prolonged periods of time may not be acceptable in many setups.

Thanks






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