Question on Create View and Create Procedure

Question

Hi everybody,
Can procedure return multiple rows and columns?
Can I create a view by use of (includes) this procedure?
Is it only create view by use of subquery or base tables, how about other objects?
[For example]
CREATE OR REPLACE PROCEDURE sp_BPSGetStaffRightsByApp
     i_staffid IN varchar2,
     o_curfunctionid IN OUT a.cursor2
AS
BEGIN
     OPEN o_curfunctionid FOR
     select func_id, user_name, remarks from bps_user_detail
     where user_id = i_staffid;
END;
Thanks.
Brigitta

Answer 1

Brigitta
Firstly the difference between is FUNCTIONS can be used in SELECT STATEMENTS because they return a value
because of the Speciality of a Function.
A procedure never returns a value but you will receive the value thru a parameter only. Hence you cannot use the
procedure in a Select statement which applies for a View also.
A refcursor returns a recordset. The record set is a collection of One or More records with Single or multiple columns.
Here is the workaround on the same thing
create or replace package types
as
type cursorType is ref cursor;
end;
10:44:48 SQL> variable v refcursor
10:45:09 SQL> exec open :v for select empno,ename from emp;
PL/SQL procedure successfully completed.
10:45:20 SQL> select :v from dual;
select :v from dual
ERROR at line 1:
ORA-00604: error occurred at recursive SQL level 1
ORA-01009: missing mandatory parameter
Elapsed: 00:00:00.41
10:45:25 SQL> print v
ERROR:
ORA-24338: statement handle not executed
SP2-0625: Error printing variable "v"
10:45:31 SQL> exec open :v for select empno,ename from emp;
PL/SQL procedure successfully completed.
Elapsed: 00:00:00.00
10:45:55 SQL> print v
EMPNO ENAME
1011 SCORPIONKINGBLADE01
7566 JONES
7654 MARTIN
7698 BLAKE
7782 CLARK
7788 SCOTT
7839 KING
7844 TURNER
7876 ADAMS
7900 JAMES
7902 FORD
7934 MILLER
12 rows selected.
Elapsed: 00:00:00.62
1 create or replace function fres(dno number) return types.cursortype as
2 cr types.cursortype;
3 begin
4 open cr for select * from emp where deptno = dno;
5 return cr;
6* end;
10:47:42 SQL> select fres(10) from dual;
select fres(10) from dual
ERROR at line 1:
ORA-00902: invalid datatype
Elapsed: 00:00:00.87
10:47:51 SQL> exec :v := fres(10);
PL/SQL procedure successfully completed.
Elapsed: 00:00:00.15
10:48:04 SQL> print v
EMPNO JOB MGR HIREDATE SAL DEPTNO ENAME COMM
1011 MANAGER12345690 1011 05-JUN-02 999909 10 SCORPIONKINGBLADE01 99
7782 MANAGER 7839 09-JUN-81 2360 10 CLARK
7839 PRESIDENT 17-NOV-81 4910 10 KING
7934 CLERK 7782 23-JAN-82 1210 10 MILLER
4 rows selected.
Elapsed: 00:00:00.31
I hope you got the concept
cheers
prakash