Error in DECODE statement

Question

Hi,
I have written this decode clause but somehow its not working and giving expression error.
SELECT
( DECODE
select param_value from feed_parameter where upper(param_name) = 'SOURCEENV' and feed_id=5085 AND CLOSE_ACTION_ID IS NULL
),'NTSNGN','mput \\csng11p20126\risk-mgt$\app\data\rds\PLNMARS4\done\',
  'NTNYC' ,'mput \\nnyc11p20008\risk$\app\data\rds\PLNMARS4\done',
           'DONE PATH') "path"
FROM feed_parameter;Is there any expression kind of error in this?

Answer 1

Well, I will put the entire scenario in which I want to add the DECODE clause here.
I have FEED_PARAM table having 2 columns, param_name and param_value. For some feed say "x", there are 2 diff possibilities like
If I write a SELECT statement,
SELECT param_name, param_value
FROM feed_parameeter
WHERE feed_id='X'It returns me 2 rows,
param_name param_value
SOURCEENV NTNYC
DELIVERY_MODE DELIVERED
What my requirement is
I have to select the rows as columns from this table and at the same time use there values in the decode clause I put earlier.
SELECT
DECODE
select param_value from feed_parameter where upper(param_name) = 'SOURCEENV' and feed_id=5085 AND CLOSE_ACTION_ID IS NULL
),'NTSNG','mput \\csng11p20126\risk-mgt$\app\data\rds\PLNMARS4\done\',
  'NTNYC' ,'mput \\nnyc11p20008\risk$\app\data\rds\PLNMARS4\done',
           'DONE PATH') "path"
FROM feed_parameter
where rownum=1So when for feed 'x', both the param_name and param_value needs to be found and accordingly aboVE SELECT clause with DECODE should give me the correct path.
Actually the above select statement has to be
decode ( select param_name, param_value from feed_parmeter, "SOURCENV" "NYNYC", AND "DELIVERYMODE" ,"DELIEVERED" THEN     " PATH"
))something like this.....
Can you please suggest me how can I embed 2 clauses inside decode or some alternate way to do this
Thanks,
Aashish
Edited by: Aashish S. on Mar 7, 2011 2:30 PM