Using Decode in Expression Builder...

Hi everybody,
I want to use the DECODE function of SQL in an Expression Builder....
Of course this function does not exist in any of the transformation categories(arithmetic,character,e.t.c.) in the expression builder.
I have read in the OWB on-line help that in the Expression Builder there should be an 'Others' drop - down list in order to select any of the available SQL clauses - one of them is 'decode'...
The problem is that this drop - down list in the Expression Builder is disabled.....
How can I use this function anyway..????
Instead of using ... in the Expression Builder...
decode(<column_name>,'1','val_one','2','val_two') what can I use to do the same....???
As regards the problem that the drop-down list is disabled , what may be the cause..???
I use Microsoft XP machine , Oracle 10g (v.10.2) and OWB v.10.1.0.4
The documentation says....
"This allows you to deploy the DECODE functionality in all operating modes (setbased, rowbased, etc.) and transparently across Oracle database releases (8.1, 9.0 and 9.2)."
The above means that the cause is the incompatibility..????
Thanks , a lot
Simon

I am using OWB 9.2.0.8 and I can't reproduce the problem you are having with 10.1, but did you try just typing it into the expression?
Or, better yet, use CASE. The syntax is easier to read. I think OWB translates DECODEs to CASE when the SQL is generated.
(Case <column_name>
When '1' Then 'val_one'
When '2' Then 'val_two'
End)

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OWB Error for using Decode in Expression

Debug code deployment messages:
LINE 4558 ,COLUMN 71:
PLS-00204: function or pseudo-column 'DECODE' may be used inside a SQL statement only
LINE 4558 ,COLUMN 17:
PL/SQL: Statement ignored
End debug code deployment messages
DBG1012: Debug deployment errors, can't run debug code.

What i have experience is that if you use Decode inside the expression the OWB cannot validate it .
But it will execute perfect.
Use Case statement so that you can validate it and debug then
Cheers
Nawneet

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{code}

I tried the following with your suggestion.
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]] Root cause of ServletException.
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hi bipin,
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Edited by: Saichand Varanasi on Jul 27, 2010 9:27 PM
Edited by: Saichand Varanasi on Jul 27, 2010 9:28 PM

How to use DECODE function in Exspression?

Hi,
Can we use DECODE in Expression?
I'm trying to use DECODE function but there is an error during the validation. But when i validate the mapping, it is successfully compiled but it is failed during deployment.
But if I use CASE instead of DECODE, it works fine.
Can we use DECODE in OWB???
Thanks
Raj

Hi,
In OWB 10gR2, if your are using only one DECODE in an expression, it's working. The package will compile when deploying the mapping. OWB will replace the DECODE by a CASE.
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In ROW_BASED mode, text of the expression is used outside of an sql statement and deployment will fails with "PLS-00204: function or pseudo-column 'DECODE' may be used inside a SQL statement only."
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Thanks in advance

use this instead:
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Hi All,
We are using OWB version 10.2.0.1.0. While using the below case statement We are getting the validation message as 'The expression is not properly formed'.
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946887 wrote:
Hi All,
We are using OWB version 10.2.0.1.0. While using the below case statement We are getting the validation message as 'The expression is not properly formed'.
Did you try to deploy the mapping ? Some time the expression validator gives wrong error messege.
Try to deploy the mapping and see if you are still getting this issue
Case statement used in expression builder:
case when (INGRP1.CHARGETYPE in ('O','F') or INGRP1.TARIFF_GROUP in ('SMSINT','MMSINT')or ( INGRP1.CALL_TYPE = '002' and INGRP1.TARIFF_GROUP = 'MTV'))
then
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OK I tried it and worked but for one condition:
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Using Decode in Expression Builder...

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