Collection in Where Clause

Question

HI All,
can i use a collection in where clause?
In my PROCEDURE i am getting A collection VARIABLE of number as a In parameter and i want use that collection in where clause like
PROCEDURE GET_EMP_DETAILS(P_EMP_NO T_EMP_NO --COLLECTION VAARIABLE) IS
CURSOR C1
SELECT * FROM
EMPLOYEE
WHERE EMPNO IN P_EMP_NO;
BEGIN
END GET_EMP_DETAILS;
BUT THIS CODE IS GIVING ERROR
Error: PLS-00642: local collection types not allowed in SQL statements
Line: 439
Text: WHERE T.SOMH_SYS_ID IN P_T_OFFICE_MEMO_NO;
I AM USING ORACLE 10GR2.
THANKS IN ADAVNCE

Answer 1

using MEMBER OF can take 16 times longer than when we queried the collection with the TABLE operator.Maybe using submultiset performs better?
SQL> var x varchar2(10)
SQL> DECLARE
     col_tab      SYS.dbms_debug_vc2coll := sys.dbms_debug_vc2coll (1, 7788, 7900);
BEGIN
     SELECT COUNT ( * )
       INTO :x
       FROM emp
      WHERE sys.dbms_debug_vc2coll (empno) SUBMULTISET OF col_tab;
END;
PL/SQL procedure successfully completed.
SQL> print x
x        
2