Oracle-L: RE: which should be faster

From: DENNIS WILLIAMS <DWILLIAMS_at_LIFETOUCH.COM>
Date: Fri, 02 May 2003 13:12:10 -0800
Message-ID: <F001.0058E709.20030502131210@fatcity.com>

I would vote for just invdate. The index structure will be smaller, a little faster to search. And if you have any queries that omit organization, the the optimizer may feel it can't use the index. But if this is a critical decision, why not test it both ways. I've noticed that is how the experts on this list are different from mediocre people like me -- they test a lot.

Dennis Williams
DBA, 60%OCP, 100% DBA
Lifetouch, Inc.
dwilliams_at_lifetouch.com

-----Original Message-----

Sent: Friday, May 02, 2003 3:27 PM
To: Multiple recipients of list ORACLE-L

I have table invoice with columns ( organization , invdate , amount )

there are tons of query which do search on organization and invdate. But there is only one distinct value for organization .

which index should be faster
a. just on indate or
b. ( organization, indate ).

-ak

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Author: DENNIS WILLIAMS
INET: DWILLIAMS_at_LIFETOUCH.COM

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