To obtain all the Month details

Question

Hi
I need to develop a report based on the query where i need to obtain the details for all the month in a year.My problem is, if a particular month is not present then it should show the details with value as null and all the month should be displayed in order.
for instance if Jan,March details are present in the table then in the report it should display as
Jan 123 124 124
Feb 0 0 0
Mar 123 124 124
Apr 0 0 0
May 0 0 0
so on.
Please help me in finding the solution
thanks,
Rahul

Answer 1

Kuljeets query will not return rows if in a particular month there is no hiredate. You can combine the 2 solutions above in one query:
select nummon, charmon, nvl(sum(sal),0)
from   emp,
(select '01' nummon ,'JAN' charmon from dual
  union
  select '02','FEB' from dual
  union
  select '03','MAR' from dual
  union
  select '04','APR' from dual
  union
  select '05','MAY' from dual
  union
  select '06','JUN' from dual
  union
  select '07','JUL' from dual
  union
  select '08','AUG' from dual
  union
  select '09','SEP' from dual
  union
  select '10','OCT' from dual
  union
  select '11','NOV' from dual
  union
  select '12','DEC' from dual )
where nummon =   to_char(hiredate (+),'MM')
group by nummon, charmon
order by 1;
NU CHA NVL(SUM(SAL),0)
01 JAN            1300
02 FEB            2850
03 MAR               0
04 APR            5975
05 MAY            3950
06 JUN            2450
07 JUL               0
08 AUG               0
09 SEP            2750
10 OCT               0
11 NOV            5000
12 DEC            4850
12 rows selected.The first column is only used for sorting.