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using indexes

From: <letokai_at_my-deja.com>
Date: Thu, 07 Dec 2000 17:03:47 GMT
Message-ID: <90ofte$llf$1@nnrp1.deja.com> 






I've read that the use of indexes was efficient only if the value
selected is not frequent in the table and that it costs very much if
it's frequent



is there a way to know if this value is frequent or not?
I mean if you have a generic program that does not know what's in the
table it's reading? Is there a way for that program to know if using
the index will be good or not?




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Before you buy.
Received on Thu Dec 07 2000 - 11:03:47 CST












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