Pass a list to Oracle Stored procedure

Question

I would like to pass a string as an input parameter to a Oracle procedure.I would then like to use this string as an "IN" clause in my select statement
Eg.select deptno from emp where empno in (ip_parameter)
However if I give the ip_parameter='7,8,9' I get an 'Invalid Number' error.
Can somebody please help----

Answer 1

Not sure if this is what you mean but . . .
PROCEDURE test (p_emp_nos VARCHAR2) is
TYPE emp_nos_table IS TABLE OF VARCHAR2(4) INDEX BY BINARY_INTEGER;
emp_nos emp_nos_table;
i_pos INTEGER := 1;
i_comma INTEGER;
BEGIN
i_comma := INSTR(p_emp_nos,',',i_pos);
WHILE i_comma > 0 LOOP
emp_nos(emp_nos.COUNT+1) := SUBSTR(p_emp_nos,i_pos,i_comma-i_pos);
i_pos := i_comma + 1;
i_comma := INSTR(p_emp_nos,',',i_pos);
END LOOP;
emp_nos(emp_nos.COUNT+1) := SUBSTR(p_emp_nos,i_pos);
dbms_output.put_line (TO_CHAR(emp_nos.COUNT) || ' emp nos in ' || p_emp_nos);
FOR i IN 1 .. emp_nos.COUNT LOOP
dbms_output.put_line ('emp no ' || TO_CHAR(i) || ' = ' || emp_nos(i));
END LOOP;
END test;