Want to show Date Period for which Data Not Present ?

Question

Hi friends
I have Notice Table.
Notice_id,
Notice_date and many more fields,
I have make group by on year(notice_date), month(notice_date). The query results in accurate data.
But it is diplaying like
2005/01
2005/02
2005/04
Like that it doesn't display the data for 2005/03 that is month of March as no data is there for that month,
I want to include the data for that month also. In fact I want take print the report for the given interval of month, Year.

Answer 1

what is your oracle version?
if you have 10g, you may want to use the model clause.
Example: count of hiredates per month in 1980,1981 in emp
SQL> select count(*) c,
  2      to_number(to_char(hiredate,'MM')) m,
  3      to_number(to_char(hiredate,'YYYY')) y
  4  from emp
  5  where to_number(to_char(hiredate,'YYYY')) in ('1980','1981')
  6  group by to_char(hiredate,'YYYY'),to_char(hiredate,'MM')
         C          M          Y
         1         12       1980
         2          2       1981
         1          4       1981
         1          5       1981
         1          6       1981
         2          9       1981
         1         11       1981
         2         12       1981ok, let's fill the blanks ...
SQL> select
  2  *
  3   from
  4  (
  5      select count(*) c,
  6     to_number(to_char(hiredate,'MM')) m,
  7     to_number(to_char(hiredate,'YYYY')) y
  8      from emp
  9      where to_number(to_char(hiredate,'YYYY')) in ('1980','1981')
10      group by to_char(hiredate,'YYYY'),to_char(hiredate,'MM')
11  )
12  model
13  partition by (y)
14  dimension by (m)
15  measures (c)
16  (c[for m from 1 to 12 increment 1]=c[cv(m)])
17* order by y,m
         Y          M          C
      1980          1
      1980          2
      1980          3
      1980          4
      1980          5
      1980          6
      1980          7
      1980          8
      1980          9
      1980         10
      1980         11
      1980         12          1
      1981          1
      1981          2          2
      1981          3
      1981          4          1
      1981          5          1
      1981          6          1
      1981          7
      1981          8
      1981          9          2
      1981         10
      1981         11          1
      1981         12          2if you do not have 10g, just google for pivot and you will find millions of solutions...
regards
Laurent