RE: Wrong results using decode when db upgraded to 9205
- From: "Khedr, Waleed" <Waleed.Khedr@xxxxxxx>
- To: <oracle-l@xxxxxxxxxxxxx>
- Date: Wed, 5 May 2004 12:49:28 -0400
Same sql/different plans give different results means a bug, make sure =
you have the downgrade script :)
Waleed
-----Original Message-----
From: Jamadagni, Rajendra [mailto:Rajendra.Jamadagni@xxxxxxxx]
Sent: Wednesday, May 05, 2004 12:26 PM
To: oracle-l@xxxxxxxxxxxxx
Subject: RE: Wrong results using decode when db upgraded to 9205
I just found that the query in question works ... In following
conditions ...
1. using case structure instead of DECODE
2. by running the report with cursor_sharing=3D3Dexact or providing
cursor_sharing_exact hint at statement level
3. Running the select with rule hint.
BTW it is not datatype conversion issue, the actual decode statement is
as follows ...
"and decode('C8','C8','237','0') =3D3D '237'"
=3D20
It is becoming obvious to me that this is an optimizer issue. I'll be
digging further ... =3D20
Raj
------------------------------------------------------------------------
--------=3D20
Rajendra dot Jamadagni at nospamespn dot com=3D20
All Views expressed in this email are strictly personal.=3D20
select standard_disclaimer from company_requirements;=3D20
QOTD: Any clod can have facts, having an opinion is an art !
-----Original Message-----
From: oracle-l-bounce@xxxxxxxxxxxxx
[mailto:oracle-l-bounce@xxxxxxxxxxxxx] On Behalf Of Stefan Jahnke
Sent: Wednesday, May 05, 2004 11:56 AM
To: oracle-l@xxxxxxxxxxxxx
Subject: AW: Wrong results using decode when db upgraded to 9205
Hi again
Sorry, haven't looked into it. Since we already changed everything to =
=3D
=3D3D
CASE on 9.2.0.4.0. The reason wasn't a bug but to be coherent with the =
=3D
=3D3D
usage of DECODE / CASE. We agreed upon ANSI style stuff (INNER JOIN, =
=3D3D
CASE blahblah) since 2 developers have a SQL Server background and seem
=3D3D to comprehend that faster (no pun intended, they're great).
Stefan
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