Boolean Condition on a Tab Not Working

Question

Hello!
I have a tab that should only appear if a record is in the database. I'm using a 'PL/SQL Function Body Returning a Boolean' condition with the following:
DECLARE
t1 varchar2(20);
BEGIN
select GROUP into t1 from pl_department where userid = :APP_USER;
if ((t1 = '-') OR (t1 is null) OR (t1 = '') or (t1 = '%' || 'null%')) then
return false;
else
return true;
end if;
END;
If no data is found in the database, i get an error at the top of my page 'Invalid function body condition: ORA-01403: no data found'.
As you can see I tried to check for 4 different possible values but nothing is working.
Any ideas on what else I can try?
Thank you!
T
Edited by: 73pixieGirl on Dec 16, 2008 6:34 AM

Answer 1

Hello,
You can better use the condition Exists (SQL Query returns at least one row)
In expression 1 you would put : select GROUP from pl_department where userid = :APP_USER;
The problem you are facing is that your code is going into exception. If you really want to keep your code you can adapt it like:
DECLARE
t1 varchar2(20);
BEGIN
select GROUP into t1 from pl_department where userid = :APP_USER;
if ((t1 = '-') OR (t1 is null) OR (t1 = '') or (t1 = '%' || 'null%')) then
return false;
else
return true;
end if;
EXCEPTION WHEN NO_DATA_FOUND THEN return false;
END;
But I would recommend my first suggestion.
Regards,
Dimitri
http://dgielis.blogspot.com/
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