AFAIK, a plain old index works just fine with Min and Max functions. However, you might need tran_dt first in the index or have its own index.
Jerry Whittle
ASIFICS DBA
NCI Information Systems Inc.
jerome.whittle_at_scott.af.mil
618-622-4145
-----Original Message-----
From: Cherie_Machler_at_gelco.com [SMTP:Cherie_Machler_at_gelco.com]
I have the following statement that I would like to create a function-based
index for:
SELECT MIN(tran_dt)
FROM ach_tran
WHERE cnfr_no = :b1
I'd like the index to include columns cnfr_no and tran_dt (in that order).
The examples I've seen are
just single-column indexes. Is it possible to have this additional
column in a function-based index that
is not involved in the actual function? If yes, what would the index
creation statement look like?
This is version 9.2.0.1 on Sun Solaris 2.6.
Thanks in advance for any assistance.
Cherie Machler
Gelco DBA
--From: Cherie_Machler_at_gelco.com [SMTP:Cherie_Machler_at_gelco.com]
I have the following statement that I would like to create a function-based
index for:
SELECT MIN(tran_dt)
FROM ach_tran
WHERE cnfr_no = :b1
I'd like the index to include columns cnfr_no and tran_dt (in that order).
The examples I've seen are
just single-column indexes. Is it possible to have this additional
column in a function-based index that
is not involved in the actual function? If yes, what would the index
creation statement look like?
This is version 9.2.0.1 on Sun Solaris 2.6.
Thanks in advance for any assistance.
Cherie Machler
Gelco DBA
Please see the official ORACLE-L FAQ: http://www.orafaq.com
--
Author: Whittle Jerome Contr NCI
INET: Jerome.Whittle_at_scott.af.mil
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