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RE: Query returning wrong results.

From: <Jared.Still_at_radisys.com>
Date: Thu, 18 Mar 2004 16:58:32 -0800
Message-ID: <OFCA8AEE6D.F4B889E0-ON88256E5C.000514BF-88256E5C.0005459C@radisys.com> 





> 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.



Not  sure I'm following.



Using the erroneous test results supplied by the poster, a test query 
simulating


the table with hard coded data does return the expected results.



16:55:47 SQL>@j
16:55:48 SQL>
16:55:48 SQL>
16:55:48 SQL>select     v.col1, v.row_eff_date, v.row_term_date
16:55:48   2  from
16:55:48   3  (  -- Inline view begins
16:55:48   4  select 10000151 col1
16:55:48   5          , to_date('01-jan-1900','dd/mon/yyyy') row_eff_date
16:55:48   6          , to_date('13-dec-2002','dd/mon/yyyy') row_term_date
16:55:48   7  from dual
16:55:48   8  union
16:55:48   9  select 10000151 col1
16:55:48  10          , to_date('13-dec-2002','dd/mon/yyyy') row_eff_date
16:55:48  11          , to_date('23-jan-2003','dd/mon/yyyy') row_term_date
16:55:48  12  from dual
16:55:48  13  union
16:55:48  14  select 10000151 col1
16:55:48  15          , to_date('23-jan-2003','dd/mon/yyyy') row_eff_date
16:55:48  16          , to_date('31-dec-2999','dd/mon/yyyy') row_term_date
16:55:48  17  from dual
16:55:48  18  ) v
16:55:48  19  where
16:55:48  20  (
16:55:48  21          trunc(v.row_eff_date)   > 
to_date('03/14/2004','MM/DD/YYYY')  OR
16:55:48  22          trunc(v.row_term_date)  = 


to_date('12/31/2999','MM/DD/YYYY')


16:55:48  23  )


16:55:48  24  /



      COL1 ROW_EFF_DATE        ROW_TERM_DATE


---------- ------------------- -------------------


  10000151 01/23/2003 00:00:00 12/31/2999 00:00:00



1 row selected.



16:55:48 SQL>








david wendelken <davewendelken_at_earthlink.net>
Sent by: oracle-l-bounce_at_freelists.org


 03/18/2004 04:29 PM


 Please respond to oracle-l

 

        To:     oracle-l_at_freelists.org
        cc: 
        Subject:        RE: Query returning wrong results.






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 - 18:55:48 CST












Original text of this message













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