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Re: Cardinality Hint?

From: Hemant K Chitale <hkchital_at_singnet.com.sg>
Date: Wed, 19 Feb 2003 06:13:57 -0800
Message-ID: <F001.0055138B.20030219061357@fatcity.com>

Jonathan,

Could you provide more information on this hint ? I couldn't find it in the 9i Performance Tuning
Guide and Reference, although there is the DYNAMIC_SAMPLING hint. Hemant

At 12:28 AM 19-02-03 -0800, you wrote:

>/*+ cardinality(t,N) */
>where t is a table alias and N is a number
>instructs the optimizer to use N as the
>computed cardinality of table t without
>going to the trouble of checking.
>
>Regards
>
>Jonathan Lewis
>http://www.jlcomp.demon.co.uk
>
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>-----Original Message-----
>To: Multiple recipients of list ORACLE-L <ORACLE-L_at_fatcity.com>
>Date: 18 February 2003 22:30
>
>
> >Anyone know anything about a /*+ CARDINALITY */ hint? I noticed it
>while
> >extracting some MView fast refresh SQL. I can't seem to find anything
> >documented about it..... any one have any info they want to share?
> >
> >Robert
> >
> >--
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Hemant K Chitale
My web site page is : http://hkchital.tripod.com

-- 
Please see the official ORACLE-L FAQ: http://www.orafaq.net
-- 
Author: Hemant K Chitale
  INET: hkchital_at_singnet.com.sg

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Received on Wed Feb 19 2003 - 08:13:57 CST

Original text of this message

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