Execute pipelined function within other function .

Question

Hi,
I'm on 9.2.0.8 , and got GUI application which can accept select only statements but I need kind of insert functionality.
So I've come up with clever idea and used pipelined functions with autonymous transaction to do inserts.
All looks like:
select * from table(opened_cursors_list)
select * from table(pgastat_list)
select * from table(sqlcosts_list)
all I need now is running this 3 function 1 after other in such way I can use select run_all_three() from dual;
or other way but called via select so my application gui can swallow it .
I've tried:
CREATE OR REPLACE Function gather_test_data
       RETURN number
    IS
        cnumber number := 1;
    BEGIN
     select * from table(opened_cursors_list);
     select * from table(pgastat_list);
     select * from table(sqlcosts_list);
    RETURN cnumber;
    EXCEPTION
    WHEN OTHERS THEN
          raise_application_error(-20001,'An error was encountered - '||SQLCODE||' -ERROR- '||SQLERRM);
    END;but got error 6/2 PLS-00428: an INTO clause is expected in this SELECT statement
So look like I need some fake I dont know how its called 'collection' to deal with that .
I know thats whole think is kind of workaround but its working with that gui application :).
Any ideas how to call that pipelined functions ?
Regards.
GregG

Answer 1

Well I did pipelined functions like that:
CREATE OR REPLACE function opened_cursors_list
return OPENED_CURSORS_table_type
pipelined
as
     PRAGMA AUTONOMOUS_TRANSACTION;
begin
     for l_rec in (select sysdate datetime, st.value , se.program, se.MODULE , se.username
                  from v$sesstat st, v$session se
                  where
                    st.statistic# = 3
                    and st.sid = se.sid
                    and value > 100
                    order by value desc
     LOOP
          PIPE ROW (OPENED_CURSORS_scalar_type(l_rec.datetime,
                                 l_rec.VALUE     ,
                            l_rec.PROGRAM   ,
                            l_rec.MODULE    ,
                            l_rec.USERNAME  ));
        insert into opened_cursors values(l_rec.datetime,
                               l_rec.VALUE     ,
                            l_rec.PROGRAM   ,
                            l_rec.MODULE    ,
                            l_rec.USERNAME);
    commit;
     END LOOP;
     RETURN;
END;
/And its working, but as You said I think I need some dummy record to select into it.
It doesn't really matters what kind of dummy record. Just to fullfil pl/sql requirements .
So how to define such dummy record to select into it from pipelined function ?
Regards.
Greg
Edited by: GregG on Apr 5, 2011 12:40 PM