Lexical parameters problem ?

Question

In my data model ,
I have plsql function which returns ref.cursor.
with in the function my sql query wants dynamic order by ?
is it possible ?
If possible when I pass deptno,mgr I want the resultent records based on deptno,mgr.
when i pass ename,deptno I want the resultent records based on ename,deptno.
how can i do this ?
thanx for help.
srini

Answer 1

You need to create dynamic SQL cursors. Check the PL/SQL manual "Chapter 11: Native Dynamic SQL".
Examples of Dynamic SQL for Records, Objects, and Collections
As the following example shows, you can fetch rows from the result set of a dynamic multi-row query into a record:
DECLARE
TYPE EmpCurTyp IS REF CURSOR;
emp_cv EmpCurTyp;
emp_rec emp%ROWTYPE;
sql_stmt VARCHAR2(200);
my_job VARCHAR2(15) := 'CLERK';
BEGIN
sql_stmt := 'SELECT * FROM emp' || ' WHERE job = :j';
OPEN emp_cv FOR sql_stmt USING my_job;
LOOP
FETCH emp_cv INTO emp_rec;
EXIT WHEN emp_cv%NOTFOUND;
-- process record
END LOOP;
CLOSE emp_cv;
END;