Group Above Report problem...not able to display absent rows in date range

Question

In my report query, I have numerous select statements that I must union together and group by a date. The ultimate goal is to get a count for all records in coordination with that date. Then in the report, I group all the data with the same date to ultimately put all counts on a page that coordinate with a single date.
Thing is...if there are no records associated with that date, the 'group by' clause makes the return data set not include those lines of output. I need these lines of output! Any suggestions??
Below is an example...
Select 'Program1', 'SubProgram1', 'Label 1', to_char(receipt_date, 'MM/DD/RRRR'), count(*)
from submissions
where receipt_date between '01-JUN-05' and '10-JUN-05'
and substr(submission_index,8,1) = '3'
and substr(submission_index,9,1) = '1'
group by substr(submission_index,8,1), substr(submission_index,9,1), to_char(receipt_date, 'MM/DD/RRRR')
union
Select 'Program2', 'SubProgram2', 'Label 2',
to_char(receipt_date, 'MM/DD/RRRR'), count(*)
from submissions
where receipt_date between '01-JUN-05' and '10-JUN-05'
and substr(submission_index,8,1) = '4' group by substr(submission_index,8,1), to_char(receipt_date, 'MM/DD/RRRR')
OUTPUT:
Program1 SubProgram1 Label 1 06/01/2005 4
Program1 SubProgram1 Label 1 06/02/2005 2
Program1 SubProgram1 Label 1 06/03/2005 6
Program1 SubProgram1 Label 1 06/04/2005 23
Program1 SubProgram1 Label 1 06/06/2005 71
Program1 SubProgram1 Label 1 06/07/2005 245
Program1 SubProgram1 Label 1 06/08/2005 76
Program1 SubProgram1 Label 1 06/10/2005 45
Program2 SubProgram2 Label 2 06/01/2005 66
Program2 SubProgram2 Label 2 06/02/2005 345
Program2 SubProgram2 Label 2 06/03/2005 89
Program2 SubProgram2 Label 2 06/04/2005 12
Program2 SubProgram2 Label 2 06/05/2005 3
Program2 SubProgram2 Label 2 06/06/2005 27
Program2 SubProgram2 Label 2 06/09/2005 98
Program2 SubProgram2 Label 2 06/10/2005 456
I need the missing lines to show up for Program 1 on 6/05 and 6/09
and Program 2 on 6/07 and 6/08

Answer 1

create table your_table (
    program     varchar2(20),
    subprogram  varchar2(20),
    label       varchar2(20),
    day         date,
    num         number
insert into your_table values ('Program1', 'SubProgram1', 'Label 1', to_date('01-JUN-05'), 4);
insert into your_table values ('Program1', 'SubProgram1', 'Label 1', to_date('02-JUN-05'), 2);
insert into your_table values ('Program1', 'SubProgram1', 'Label 1', to_date('03-JUN-05'), 6);
insert into your_table values ('Program1', 'SubProgram1', 'Label 1', to_date('04-JUN-05'), 23);
insert into your_table values ('Program1', 'SubProgram1', 'Label 1', to_date('06-JUN-05'), 71);
insert into your_table values ('Program1', 'SubProgram1', 'Label 1', to_date('07-JUN-05'), 245);
insert into your_table values ('Program1', 'SubProgram1', 'Label 1', to_date('08-JUN-05'), 76);
insert into your_table values ('Program1', 'SubProgram1', 'Label 1', to_date('10-JUN-05'), 45);
insert into your_table values ('Program2', 'SubProgram2', 'Label 2', to_date('01-JUN-05'), 66);
insert into your_table values ('Program2', 'SubProgram2', 'Label 2', to_date('02-JUN-05'), 345);
insert into your_table values ('Program2', 'SubProgram2', 'Label 2', to_date('03-JUN-05'), 89);
insert into your_table values ('Program2', 'SubProgram2', 'Label 2', to_date('04-JUN-05'), 12);
insert into your_table values ('Program2', 'SubProgram2', 'Label 2', to_date('05-JUN-05'), 3);
insert into your_table values ('Program2', 'SubProgram2', 'Label 2', to_date('06-JUN-05'), 27);
insert into your_table values ('Program2', 'SubProgram2', 'Label 2', to_date('09-JUN-05'), 98);
insert into your_table values ('Program2', 'SubProgram2', 'Label 2', to_date('10-JUN-05'), 456);
SELECT     yt.program
,           yt.subprogram
,           yt.label
,           nvl(yt.num,0)     NUM
,           days.date_value
FROM     (     select  (to_date('11-JUN-05','DD-MON-YY') - day) date_value
               from    (   select  rownum day            
                           from    dual            
                           connect by rownum < 11        
          )                    days
,          your_table          yt
where   yt.day(+) = days.date_value
order by yt.program, days.date_value
PROGRAM          SUBPROGRAM     LABEL     NUM     DATE_VALUE
Program1     SubProgram1     Label 1     4     6/1/2005
Program1     SubProgram1     Label 1     2     6/2/2005
Program1     SubProgram1     Label 1     6     6/3/2005
Program1     SubProgram1     Label 1     23     6/4/2005
Program1     SubProgram1     Label 1     71     6/6/2005
Program1     SubProgram1     Label 1     245     6/7/2005
Program1     SubProgram1     Label 1     76     6/8/2005
Program1     SubProgram1     Label 1     45     6/10/2005
Program2     SubProgram2     Label 2     66     6/1/2005
Program2     SubProgram2     Label 2     345     6/2/2005
Program2     SubProgram2     Label 2     89     6/3/2005
Program2     SubProgram2     Label 2     12     6/4/2005
Program2     SubProgram2     Label 2     3     6/5/2005
Program2     SubProgram2     Label 2     27     6/6/2005
Program2     SubProgram2     Label 2     98     6/9/2005
Program2     SubProgram2     Label 2     456     6/10/2005The four null rows will not show up because the date is used at least once between program 1 or program 2. Will there only ever be two programs to chose from? Any one else got any ideas around this?