Has no value definition - Session INIT Block.

Question

Hi,
I have a Session initialization block for Fetching Departments from a Security table for the user logging in.
One user can have Multiple Departments assigned to him, so i enabled Row-wise initialization in INIT Block.
But when a user not assigned to any departments logs in, i am getting 'Session variable has no value definition' error in all the reports. But i should instead pass a default value when SQL in INIT Block is not returning anything. Like '0'.
How can i do this? please respond.
Thanks
Swami

Answer 1

Hi Swami,
When the query fetches a result set, the variable gets initialized.
But, when the query doesn't fetch any rows, the variable doesn't gets initialized and hence "no value definition" errors out.
So, to avoid this,
In the query itself, place an exception condition which returns '0'.
select dept_name from table
where user_name = ':user'
UNION
select '0' from table
where user_name <> ':user'or you can use like this
select CASE WHEN user_name = ':user' THEN dept_name ELSE '0' END
from tableP.S: Query written orally. (Pls adjust the query accordingly)
Regards,
Raghu