RE: Query returning wrong results.

From: david wendelken <davewendelken_at_earthlink.net>
Date: Thu, 18 Mar 2004 19:29:45 -0500 (GMT-05:00)
Message-ID: <18922789.1079656185702.JavaMail.root@donald.psp.pas.earthlink.net>

Actually, the query is doing exactly what you told it to do!

The first part of the subquery would bring back each and every row with a col1 = '10000151' .

The second part of the subquery would bring back some of those same rows again, but with different date values, thus duplicating some rows in the result set.

-----Original Message-----
From: "Khedr, Waleed" <Waleed.Khedr_at_FMR.COM> Sent: Mar 18, 2004 5:38 PM
To: "'oracle-l_at_freelists.org'" <oracle-l_at_freelists.org> Subject: RE: Query returning wrong results.

Is it using PQO?

Waleed

-----Original Message-----
From: Prasada.Gunda_at_hartfordlife.com
[mailto:Prasada.Gunda_at_hartfordlife.com]
Sent: Thursday, March 18, 2004 2:32 PM
To: oracle-l_at_freelists.org
Subject: Query returning wrong results.

Hi,

One of our developer sent me this query that it is returning wrong results. Please see the following query.

select v.col1, v.row_eff_date, v.row_term_date from
( -- Inline view begins
select a.col1
, trunc(a.col2) row_eff_date
, nvl(lead(trunc(a.col2)) over

        (partition by a.col1, a.tblnm, a.clmnnm order by a.col2),to_date ('12/31/2999','mm/dd/yyyy')) row_term_date from table1 a

where  a.tblnm  = 'INPUT_TABLE'
and    a.clmnnm = 'INPUT_COL'
and    a.col1   = '10000151'

union all
select a1.col1
, to_date('01/01/1900','mm/dd/yyyy') row_eff_date
, trunc(a1.col2) row_term_date

from table1 a1

where  a1.tblnm  = 'INPUT_TABLE'
and    a1.clmnnm = 'INPUT_COL'
and    a1.col1   = '10000151'
and    (a1.col1, a1.col2) IN
                (select octl1.col1, min(octl1.col2)
                 from table1 octl1
                 where octl1.tblnm  ='INPUT_TABLE'
                 and   octl1.clmnnm ='INPUT_COL'
                 group by octl1.col1
                 )

-- Inline view ends.
) v
where
(

     trunc(v.row_eff_date)   >  to_date('03/14/2004','MM/DD/YYYY')  OR
     trunc(v.row_term_date)  =  to_date('12/31/2999','MM/DD/YYYY')

)

If I run inline view on its own, it returns 3 records.

COL1 ROW_EFF_DAT ROW_TERM_DA

------------ ----------- -----------
10000151     01-jan-1900 13-dec-2002
10000151     13-dec-2002 23-jan-2003
10000151     23-jan-2003 31-dec-2999

If I run the entire sql, it suppose to return the following record.

COL1 ROW_EFF_DAT ROW_TERM_DA
------------ ----------- -----------
10000151 23-jan-2003 31-dec-2999

But, the query returns the following two records which is wrong.

COL1 ROW_EFF_DAT ROW_TERM_DA

------------ ----------- -----------
10000151     13-dec-2002 23-jan-2003
10000151     23-jan-2003 31-dec-2999

Did anybody experience this before. I kind of remember that it is something to do with analytical function but I can not recall. For the purpose of testing, when I created a table out of inner sql and used that table in the inner query, it works fine. The DB is 8.1.7.4 on Hp-unix v11. I also opened a TAR and will update the status to the List.

Thanks in advance.

Best regards,
Prasad

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Received on Thu Mar 18 2004 - 18:28:41 CST