Display Years between dates - Need Help.!!!

Question

Dear Reader,
I need help to resolve this.
Below are the values stored in table:
SOME_ID      START_DATE     END_DATE
1                     15-NOV-2001        04-MAY-2002
1                     05-MAY-2004        04-MAY-2007
1                     05-MAY-2007        27-JAN-2008
2                     07-NOV-1991        02-FEB-1994
2                     07-NOV-1998        02-FEB-1999
For example, the query should return as follows :
For SOME_ID 1:
SOME_ID        YEARS
1                      2001
1                      2002
1                      2004
1                      2005
1                      2006
1                      2007
1                      2008
Kindly help in providing the solution.
Thanks in Advance.

Answer 1

with sample_table as (
                      select 1 some_id,to_date('15-NOV-2001','dd-mon-yyyy') start_date,to_date('04-MAY-2002','dd-mon-yyyy') end_date from dual union all
                      select  1,to_date('05-MAY-2004','dd-mon-yyyy'),to_date('04-MAY-2007','dd-mon-yyyy') from dual union all
                      select 1,to_date('05-MAY-2007','dd-mon-yyyy'),to_date('27-JAN-2008','dd-mon-yyyy') from dual union all
                      select 2,to_date('07-NOV-1991','dd-mon-yyyy'),to_date('02-FEB-1994','dd-mon-yyyy') from dual union all
                      select 2,to_date('07-NOV-1998','dd-mon-yyyy'),to_date('02-FEB-1999','dd-mon-yyyy') from dual
select  distinct some_id,
                 column_value years
  from  sample_table,
        table(
              cast(
                   multiset(
                            select  to_number(to_char(start_date,'yyyy')) + level - 1
                              from  dual
                              connect by to_number(to_char(start_date,'yyyy')) + level - 1 <= to_number(to_char(end_date,'yyyy'))
                   as sys.OdciNumberList
  where some_id = 1
  order by years
   SOME_ID      YEARS
         1       2001
         1       2002
         1       2004
         1       2005
         1       2006
         1       2007
         1       2008
7 rows selected.
SQL> SY.