Passing parameter into stored procedure

Question

Hi guys,
I have a big problem here passing as a parameter in stored
procedure.
If i pass as a parameter in where clause it is working fine.
Whenever i pass the parameter in order by it was not working..
How to implement this issue????
Here i am giving the example for package:
PACKAGE XTRA.TEST_STATUS
AS
TYPE GenericCurTyp IS REF CURSOR;
PROCEDURE SP_MAIN
( insortgroup IN VARCHAR2,GENERAL_CUR IN OUT GenericCurTyp);
END TEST_STATUS;
PACKAGE BODY XTRA.TEST_STATUS
AS
PROCEDURE SP_MAIN
( insortgroup IN VARCHAR2, GENERAL_CUR IN OUT GenericCurTyp
) AS
BEGIN
OPEN GENERAL_CUR FOR
select last_name,first_name from applicant Order By insortgroup;
END SP_MAIN;
END TEST_STATUS;
Passing as a parameter i am getting the below details.
LAST_NAME FIRST_NAME
ASFSDAF DASDFASF
Ad DASD
Adams John
DANA WITEST
If i hot code the parameter insortgroup to last_name
i am getting the below values:
LAST_NAME FIRST_NAME
'ANNUNZIO GIANCOLA GABRIEL
0'BRIEN ARMA
0120453EZ ESTANISLAO
082479 ELIZABETH
Thanks,
Rao

Answer 1

CREATE OR REPLACE PACKAGE xtra.test_status
AS
  TYPE GenericCurTyp IS REF CURSOR;
  PROCEDURE sp_main
    (insortgroup IN     VARCHAR2,
     general_cur IN OUT GenericCurTyp);
END test_status;
CREATE OR REPLACE PACKAGE BODY xtra.test_status
AS
  PROCEDURE sp_main
    (insortgroup IN     VARCHAR2,
     general_cur IN OUT GenericCurTyp)
  AS
    select_statement VARCHAR2 (4000) := NULL;
  BEGIN
    select_statement :=
    'SELECT   last_name,
              first_name
     FROM     applicant
     ORDER BY ' || insortgroup;
    DBMS_OUTPUT.PUT_LINE (select_statement);
    OPEN general_cur FOR select_statement;
  END sp_main;
END test_status;