SQL>
SQL> declare
2 v_ind NUMBER;
3 v_current NUMBER;
4 begin
5 v_current:=0; -- should not be null!
6 loop
7 v_ind:=0; -- reset each time
8 loop
9 v_ind:=v_ind+1;
10 DBMS_OUTPUT.put_line(v_current);
11 exit when v_ind=4;
12 end loop;
13 v_current:=v_current+5;
14 exit when v_current=25;
15 end loop;
16 end;
17 /
0
5
10
15
20
PL/SQL procedure successfully completed.
SQL>