Help required in PLSQL Procedure.

Question

Hi All,
I am writing a procedure in PLSQL, based on user input(user will input table name) we have to do a select * from table_name(input). How can we do this. Please suggest
Thanks and Regards,
Mahesh

Answer 1

Mahesh Ananth wrote:
Hi All,
I am writing a procedure in PLSQL, based on user input(user will input table name) we have to do a select * from table_name(input). How can we do this. Please suggestThis is generally bad practice so perhaps if you explain what you are trying to achieve in your business we can suggest a better way.
However, if you must..
SQL> ed
Wrote file afiedt.buf
  1  create or replace procedure open_rc(p_table IN VARCHAR2, p_rc OUT sys_refcursor) is
  2  begin
  3    open p_rc for 'select * from '||p_table;
  4* end;
SQL> /
Procedure created.
SQL> var x refcursor
SQL> exec open_rc('emp',:x);
PL/SQL procedure successfully completed.
SQL> print x;
     EMPNO ENAME      JOB              MGR HIREDATE         SAL       COMM     DEPTNO
      7369 SMITH      CLERK           7902 17-DEC-80        800                    20
      7499 ALLEN      SALESMAN        7698 20-FEB-81       1600        300         30
      7521 WARD       SALESMAN        7698 22-FEB-81       1250        500         30
      7566 JONES      MANAGER         7839 02-APR-81       2975                    20
      7654 MARTIN     SALESMAN        7698 28-SEP-81       1250       1400         30
      7698 BLAKE      MANAGER         7839 01-MAY-81       2850                    30
      7782 CLARK      MANAGER         7839 09-JUN-81       2450                    10
      7788 SCOTT      ANALYST         7566 19-APR-87       3000                    20
      7839 KING       PRESIDENT            17-NOV-81       5000                    10
      7844 TURNER     SALESMAN        7698 08-SEP-81       1500          0         30
      7876 ADAMS      CLERK           7788 23-MAY-87       1100                    20
      7900 JAMES      CLERK           7698 03-DEC-81        950                    30
      7902 FORD       ANALYST         7566 03-DEC-81       3000                    20
      7934 MILLER     CLERK           7782 23-JAN-82       1300                    10
14 rows selected.
SQL> exec open_rc('dept',:x);
PL/SQL procedure successfully completed.
SQL> print x;
    DEPTNO DNAME          LOC
        10 ACCOUNTING     NEW YORK
        20 RESEARCH       DALLAS
        30 SALES          CHICAGO
        40 OPERATIONS     BOSTON
SQL>