How do I execute a returned sql string from a function on the command line?

Hi,
I have written a pl/sql function that will dynamically create a sql select statement. I need to be able to execute this statement from the command line. e.g from sqlplus
Say my function is called "sql_create" and it returns "select * from customer"
How do I execute the returned value from the command line?" Is it possible?
SQL> select sql_create from dual;
SQL_CREATE
select * from customer
SQL>
So I try:
SQL> exec execute immediate 'select sql_create from dual';
SQL>
I don't get an error but I don't get the result set either.
Is there a command I can use instead of execute immediate?
thanks,
Susan
Edited by: Susan123456 on Jul 2, 2009 1:21 AM

depends on the frontend. Most frontends (like Java and .Net) know how to handle REF CURSORS. Instead of returing a "string" which represents a query, return a ref cursor
SQL> ed
Wrote file afiedt.buf
1 create function sql_q return sys_refcursor
2 is
3     rc sys_refcursor;
4 begin
5     open rc for select * from emp;
6     return rc;
7* end;
SQL> /
Function created.
SQL> var r refcursor
SQL>
SQL> exec :r := sql_q
PL/SQL procedure successfully completed.
SQL> print r
     EMPNO ENAME      JOB              MGR HIREDATE         SAL       COMM     DEPTNO
      7369 SMITH      CLERK           7902 17-DEC-80        900                    20
      7499 ALLEN      SALESMAN        7698 20-FEB-81       1700        300         30
      7521 WARD       SALESMAN        7698 22-FEB-81       1350        500         30
      7566 JONES      MANAGER         7839 02-APR-81       3075                    20
      7654 MARTIN     SALESMAN        7698 28-SEP-81       1350       1400         30
      7698 BLAKE      MANAGER         7839 01-MAY-81       2950                    30
      7782 CLARK      MANAGER         7934 09-JUN-81       2551                    10
      7788 SCOTT      ANALYST         7566 19-APR-87       3100                    20
      7839 KING       PRESIDENT            17-NOV-81       5100                    10
      7844 TURNER     SALESMAN        7698 08-SEP-81       1600          0         30
      7876 ADAMS      CLERK           7788 23-MAY-87       1200                    20
     EMPNO ENAME      JOB              MGR HIREDATE         SAL       COMM     DEPTNO
      7900 JAMES      CLERK           7698 03-DEC-81       1050                    30
      7902 FORD       ANALYST         7566 03-DEC-81       3100                    20
      7934 MILLER     CLERK           7782 23-JAN-82       1400                    10

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