IN operator is not working correctly while calling,although pl/sql procedur

Question

CREATE or REPLACE PROCEDURE TEST(
idListCommaSeparated IN VARCHAR2
AS
CURSOR c_emp IS SELECT first_name,last_name,start_date From Employee where id IN(idListCommaSeparated);
r_emp c_emp%ROWTYPE;
begin
insert into temp1 values('B',sysdate,sysdate,'A');
      open c_emp;
      loop
          fetch c_emp into r_emp;
          exit when c_emp%NOTFOUND;
          insert into temp1 values(r_emp.first_name,sysdate,sysdate,'A');
             --business Logic
  end loop;
      close c_emp;
end;
/idListCommaSeparated contains values like (2,3,4). while executing this procedure on sqlplus it is succefully created.
When i run the query separately on sqlplus
SELECT first_name,last_name,start_date From Employee where id IN(2,3,4)I got some rows in result.
why i am not getting via procedure correct result.
and one more thing the number of elements in 'idListCommaSeparated' values are not fixed,sometimes it may be(2,3,4) or sometimes variable value may (2,3,5,6).
I am not able to understand,where i am going wrong?

Answer 1

see whether you find nested table parameter implantation option useful. Also supported by .net/java in case that's your calling appln.
Below is plsql block having a procedure with input paramater of empid's. It returns a cursor( empno and ename) as out parameter.
The empid's are hardcoded in the calling block.
SQL> create type t_id is table of number
  2  /
Type created.
SQL> set serveroutput on
SQL> declare
  2
  3   v_tid t_id;
  4   v_results sys_refcursor;
  5
  6   v_employee_id number;
  7   v_name varchar2(100);
  8
  9   procedure TEST (p_tid in t_id, p_empcursor out sys_refcursor)  as
10   begin
11    open p_empcursor for
12    select empno, ename from scott.emp
13    where empno in (select column_value from table (p_tid));
14
15   end;
16
17
18  begin
19   v_tid := t_id(7902,7934);
20
21   TEST(v_tid,v_results);
22
23   IF v_results IS NOT NULL
24     THEN
25        LOOP
26           FETCH v_results
27            INTO v_employee_id, v_name;
28
29           EXIT WHEN (v_results%NOTFOUND);
30           dbms_output.put_line(v_name);
31        END LOOP;
32
33        IF v_results%ISOPEN
34        THEN
35           CLOSE v_results;
36        END IF;
37    END IF;
38
39  end;
40  /
*FORD*
*MILLER*
PL/SQL procedure successfully completed.
SQL>