RE: Strange behavior

From: Odland, Brad <Brad.Odland_at_qtiworld.com>
Date: Wed, 07 Jan 2004 12:19:26 -0800
Message-ID: <F001.005DC024.20040107121926@fatcity.com>

It looks like your comparing apples to pears....

(sorry couldn't resist)

Why rowid and rownum....

why not a column from common.apple....

ANy way I would check the explain plans on those to get more info...

bRAD o

-----Original Message-----
Sent: Wednesday, January 07, 2004 1:49 PM To: Multiple recipients of list ORACLE-L

Greetings fellow-DBA-folk:

When I run several queries, I am getting very strange results. Selecting * from apple returns the expected data records, but count(*) does not.
Selecting anything other than * from apple says no records. The subquery for pear works fine on it's own. Selecting anything other than * from apple returns the expected records when about 900+ values are placed literally in the subquery as shown in example 4 below.

Am I missing something? Anyone have a direction for me to look for the cause of this?

Thanks
Stephen

EX 1
select rowid from common.apple
where appleinter1 in (select pearinternal from common.pear where pear_clnt_src_cd = 'CCN')
and appletermd is null
and rownum < 10 ;

no rows selected

EX 2
select rownum from common.apple
where appleinter1 in (select pearinternal from common.pear where pear_clnt_src_cd = 'CCN')
and appletermd is null
and rownum < 10 ;

no rows selected

EX 3
select * from common.apple
where appleinter1 in (select pearinternal from common.pear where pear_clnt_src_cd = 'CCN')
and appletermd is null
and rownum < 10 ;

9 rows returned, I removed them for confidentiality reasons ---

EX 4
select count(*) from common.apple
where appleinter1 in ( 7009 , 7010 , 7011 , 7012 , 7013 , 7014 , 7015 , 7016 , 7017 , 7018 , 7019)
and appletermd is null
and rownum < 10 ;

9 rows returned, I removed them for confidentiality reasons ---

EX 5
select count(*) from common.apple
where appleinter1 in (select pearinternal from common.pear where pear_clnt_src_cd = 'CCN')
and appletermd is null;

COUNT(*)

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Author: Stephen Andert
INET: StephenAndert_at_firsthealth.com

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Author: Odland, Brad
INET: Brad.Odland_at_qtiworld.com

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