Selecting from a nested table

Question

Hi All,
Is it possible to select * from nested_table_variable;
I want in this format so that I can return the values to to java using refcursor.
Please help me

Answer 1

Ya, something like this --
satyaki>
satyaki>create or replace type pl_hok as object
  2   (
  3     GrA         varchar2(5),
  4     GrB         varchar2(5)
  5   );
  6  /
Type created.
satyaki>
satyaki>
satyaki>create or replace type pl_hok_rec as table of pl_hok;
  2  /
Type created.
satyaki>
satyaki>
satyaki>create or replace function pipe_sel(
  2                                         st_dt in date,
  3                                         en_dt in date
  4                                        )
  5  return pl_hok_rec pipelined
  6  is
  7    cursor c1
  8    is
  9      select distinct empno
10      from emp
11      where hiredate between st_dt and en_dt;
12     
13    r1 c1%rowtype;
14     
15    cursor c2
16    is
17      select distinct mgr
18      from emp
19      where hiredate between st_dt and en_dt;
20     
21    r2 c2%rowtype;
22    pragma autonomous_transaction;
23  begin
24       open c1;
25       open c2;
26      
27       loop
28         fetch c1 into r1;
29         fetch c2 into r2;
30        
31           exit when c1%notfound and c2%notfound;
32           pipe row(pl_hok(to_char(r1.empno),to_char(r2.mgr)));
33       end loop;
34      
35       close c2;
36       close c1;
37  
38     return;
39  exception
40    when others then
41      dbms_output.put_line(sqlerrm);
42  end;
43  /
Function created.
satyaki>
satyaki>
satyaki>select GrA,GrB from table(pipe_sel(to_date('01-jan-1980','dd-mon-yyyy'),to_date('20-aug-2007','dd-mon-yyyy')));
GROUP GROUP
7006  7369
7369  7566
7499  7698
7521  7782
7566  7788
7654  7839
7698  7902
7782
7788
7839
7844
GROUP GROUP
7876
7900
7902
7934
9898
16 rows selected.
satyaki>Regards.
Satyaki De.