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* does indexes need statistics?
@ 2005-11-24 18:43 Mauricio Fernandez A. <mfacontacto@ono.com>
2005-11-25 12:37 ` Re: does indexes need statistics? Andrew Sullivan <ajs@crankycanuck.ca>
0 siblings, 1 reply; 2+ messages in thread
From: Mauricio Fernandez A. @ 2005-11-24 18:43 UTC (permalink / raw)
To: pgsql-sql
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Hello everybody,
Is it necesary the statistics be enabled when I create indexes or to
use them?
thanks
Mauricio Fernández A.
Ingeniero de Sistemas
U. Autónoma de Manizales
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^ permalink raw reply [nested|flat] 2+ messages in thread
* Re: does indexes need statistics?
2005-11-24 18:43 does indexes need statistics? Mauricio Fernandez A. <mfacontacto@ono.com>
@ 2005-11-25 12:37 ` Andrew Sullivan <ajs@crankycanuck.ca>
0 siblings, 0 replies; 2+ messages in thread
From: Andrew Sullivan @ 2005-11-25 12:37 UTC (permalink / raw)
To: pgsql-sql
On Thu, Nov 24, 2005 at 07:43:28PM +0100, Mauricio Fernandez A. wrote:
> Is it necesary the statistics be enabled when I create indexes or to
> use them?
Uh, yes, but you can't turn them off. I suspect I don't understand
your question. Do you mean the "runtime statistics" section of the
configuration file? If that's what you mean, then no. Those aren't
the same thing as the statistical data used by the planner; the
latter is updated when you run "analyse".
A
--
Andrew Sullivan | ajs@crankycanuck.ca
"The year's penultimate month" is not in truth a good way of saying
November.
--H.W. Fowler
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2005-11-24 18:43 does indexes need statistics? Mauricio Fernandez A. <mfacontacto@ono.com>
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