Registering PL/SQL procedure in APPS with optional parameters

Question

I want to register a PL/SQL procedure as follows in Oracle APPS.
Problem:
The procedure is to pick up employee details from a table.I need to pass empno as the parameter(or as an input) to the procedure.I want this parameter registered as an optional parameter. This means if I input a value to this parameter, then the procedure will pick up employee details for that empno. If I do not pass any value to this parameter, then procedure will pick employee details for all employees.
Also how can pass two optional parameters to pick employee details for a range of employee numbers?
Thanks

Answer 1

How are you calling your PL/SQL procedure and how are you planning on returning your results?
You don't actually need to have an optional parameter - you could simply pass a NULL value for the EmpNo parameter. If you do want to not reference the parameter at all you can provide a default in the parameter definition.
Assuming that you want to return your results as a cursor, you could do something like:
FUNCTION GetEmpDetails ( EmpNo_i IN VARCHAR2 DEFAULT NULL ) RETURN SYS_REFCURSOR;