-- "Kirsh, Gary" <[EMAIL PROTECTED]>

> It's not using the index because of the NOT IN - it doesn't help to search
> an index to see what's NOT in it.  Did you try rewriting it to use a NOT
> EXISTS instead?

Which can quickly degenerate into a tablescan also... even
if the index exists if the entropy isn't high enough oracle
will skip it anyway. Try an analyze table first on the
exists (or a sub-query) and see how that works.

--
Steven Lembark                               2930 W. Palmer
Workhorse Computing                       Chicago, IL 60647
                                            +1 800 762 1582
-- 
Please see the official ORACLE-L FAQ: http://www.orafaq.com
-- 
Author: Steven Lembark
  INET: [EMAIL PROTECTED]

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