While using group by clause facing this problem

Question

1.----- Orders Closed
SELECT count(distinct h.order_number ) no_of_orders
from
oe_order_headers_all h,oe_order_lines_all l
where h.header_id = l.header_id
and l.flow_status_code = 'CLOSED'
and l.open_flag = 'N'
Output:
NO_OF_ORDERS
47905
2.Orders Closed with respect to org_id :
SELECT h.org_id,count(distinct h.order_number ) no_of_orders, l.flow_status_code
from
oe_order_headers_all h,oe_order_lines_all l
where h.header_id = l.header_id
and l.flow_status_code = 'CLOSED'
and l.open_flag = 'N'
group by l.flow_status_code,h.org_id
Output:
ORG_ID NO_OF_ORDERS
600 24
204 10864
626 6551
887 7170
888 6962
889 6431
911 7678
916 6
917 6
996 2969
1017 1765
1018 1794
1668 5
1733 16
1759 1
1885 1
2541 10
2869 1
3537 1
The total count of h.order_number is 52255.
The total count of h.number_order is varying while grouping with respect to org_id.
So anyone help me to solve this issue.

Answer 1

Hi,
We do not have any data etc. But if your question is why is the sum of the distinct count more then the total distinct count, that is very well posible.
See sample data below.
org_id     order_number
1          1
1          2
2          1
2          3distinct count of order_number = 3
and the sum of the distinct counts grouped by org_id = 2 + 2 = 4
I do not see any problem
Regards,
Peter