You can have range scan with equality search (=) as well, if your index is
non-unique and there is no unique constraint on column.
Tanel.
- Original Message -----
To: "Multiple recipients of list ORACLE-L" <ORACLE-L_at_fatcity.com>
Sent: Tuesday, December 30, 2003 3:24 PM
> put in a "between clause" in "where clause" on appropriate columns for a
range scan.
>
> Raj
> --------------------------------------------------------------------------
> Rajendra dot Jamadagni at nospamespn dot com
> All Views expressed in this email are strictly personal.
> QOTD: Any clod can have facts, having an opinion is an art !
>
>
> -----Original Message-----
> Sent: Tuesday, December 30, 2003 8:14 AM
> To: Multiple recipients of list ORACLE-L
>
>
> I know you can hint a fast full scan. I have run into cases lately where
depending on circumstances Oracle will use an index, but use a sub-optimal
type of index scan with dramatic differences in performances.
>
> This is on 9.2. Any hints for forcing an 'index range scan'. Anything
stronger than a 'hint'. Something like 'do it because I said so'.
>
> This only happens occasionaly, so Id just like to know if it exists for
future reference.
>
> --
> Please see the official ORACLE-L FAQ: http://www.orafaq.net
> --
> Author: <ryan_oracle_at_cox.net
> INET: ryan_oracle_at_cox.net
>
> Fat City Network Services -- 858-538-5051 http://www.fatcity.com
> San Diego, California -- Mailing list and web hosting services
> ---------------------------------------------------------------------
> To REMOVE yourself from this mailing list, send an E-Mail message
> to: ListGuru_at_fatcity.com (note EXACT spelling of 'ListGuru') and in
> the message BODY, include a line containing: UNSUB ORACLE-L
> (or the name of mailing list you want to be removed from). You may
> also send the HELP command for other information (like subscribing).
>
>
> This e-mail message is confidential, intended only for the named
recipient(s) above and may contain information that is privileged, attorney
work product or exempt from disclosure under applicable law. If you have
received this message in error, or are not the named recipient(s), please
immediately notify corporate MIS at (860) 766-2000 and delete this e-mail
message from your computer, Thank you.
>
**********4
> --
> Please see the official ORACLE-L FAQ: http://www.orafaq.net
> --
> Author: Jamadagni, Rajendra
> INET: Rajendra.Jamadagni_at_espn.com
>
> Fat City Network Services -- 858-538-5051 http://www.fatcity.com
> San Diego, California -- Mailing list and web hosting services
> ---------------------------------------------------------------------
> To REMOVE yourself from this mailing list, send an E-Mail message
> to: ListGuru_at_fatcity.com (note EXACT spelling of 'ListGuru') and in
> the message BODY, include a line containing: UNSUB ORACLE-L
> (or the name of mailing list you want to be removed from). You may
> also send the HELP command for other information (like subscribing).
>
--
Please see the official ORACLE-L FAQ: http://www.orafaq.net
--
Author: Tanel Poder
INET: tanel.poder.003_at_mail.ee
Fat City Network Services -- 858-538-5051 http://www.fatcity.com
San Diego, California -- Mailing list and web hosting services
---------------------------------------------------------------------
To REMOVE yourself from this mailing list, send an E-Mail message
to: ListGuru_at_fatcity.com (note EXACT spelling of 'ListGuru') and in
the message BODY, include a line containing: UNSUB ORACLE-L
(or the name of mailing list you want to be removed from). You may
also send the HELP command for other information (like subscribing).
Received on Tue Dec 30 2003 - 07:39:25 CST
