How to pass date into a sp?

Question

Hi,
Could anybody know how to pass a parameter of type date into a
sp? Below are something I tried:
1.
create or replace package empTest AS
     PRAGMA SERIALLY_REUSABLE;
     TYPE curType IS REF CURSOR;
     function Details (
          hd date)
          RETURN curType;
END;
CREATE OR REPLACE PACKAGE BODY empTest AS
     PRAGMA SERIALLY_REUSABLE;
function Details (
          hd date)
          RETURN curType IS
          sum_cv curType;
     err_num NUMBER;
     err_msg     VARCHAR2(200);
     sql_statement VARCHAR2(3000);
BEGIN
DBMS_OUTPUT.PUT_LINE(hd);
     sql_statement :=' SELECT * from emp where hiredate <
to_date(''hd'', ''Dd-Mon-YY'') ';
DBMS_OUTPUT.PUT_LINE(sql_statement );
     OPEN sum_cv FOR sql_statement ;
     IF NOT sum_cv%ISOPEN THEN
          OPEN sum_cv FOR sql_statement;
     END IF;
     RETURN sum_cv;
END Details ;
END;
RUN      EXEC      :CV := empTest.Details('10-DEC-01');
ORA-01858: a non-numeric character was found where a numeric was
expected
2. sql_statement :=' SELECT * from emp where hiredate <
to_date(hd) ';
Run in the same way:
ORA-00904: invalid column name
3. sql_statement :=' SELECT * from emp where hiredate < to_date
(''hd'') ';
Run in the same way:
ORA-01858: a non-numeric character was found where a numeric was
expected
Thanks

Answer 1

Use the call syntax ...
empTest.Details(to_date('10-DEC-01','DD-MON-RR'));
.. or better yet ...
empTest.Details(to_date('10-DEC-2001','DD-MON-YYYY'));
As you are passing a date you do not need to use the to_date function in the cursor SQL statement.