2 Facts with common dimensions

Question

Hi All,
I am trying to developer an Answer
I have two Fact tables :- Budgets and Actuals
The two Fact Tables have common dimensions (Period, Cost Centre and Expense)
When I create an answer which combines these common dimensions and the two fact tables I can create a report that compares Actuals Vs Budgets and that works fine
However the Budget Fact has an additional dimension Bugdet Name (which can have values like 'Budget','Forecast','Allocation') that does not apply to Actuals
When I try to fliter or include the Budget Name I lose all my actuals
(Incidentally some actuals do not have budgets, some budgets do not have actuals and I want to see all rows)
Any ideas?
Cheers
Pete

Answer 1

Hi,
I try this:
I have in BMM one subject area with two fact and common dimension
SALES -> quantity_sold measure
and
SALES_TIME_ID -> select (amount_sold-100) as amount_sold, time_id from sales
and dimensions
TIMES
PRODUCTS
Both are joined to a SALES and just TIMES is joined to a SALES_TIME_ID in physical layer and in BMM complex join are propagated from facts to dimensions
Test in Answers - both queries are generated:
TIMES.CALENDAR_YEAR
SALES.QUANTITY_SOLD
SALES_TIME_ID.AMOUNT_SOLD
select T20553.CALENDAR_YEAR as c1,
sum(T20550.QUANTITY_SOLD) as c2
from
TIMES T20553,
SALES T20550
where ( T20550.TIME_ID = T20553.TIME_ID )
group by T20553.CALENDAR_YEAR
order by c1
------------------- Sending query to database named orcl (id: <<13806>>):
select T20553.CALENDAR_YEAR as c1,
sum(T35447.amount_sold) as c2
from
TIMES T20553,
(select (amount_sold-100) as amount_sold, time_id from sales) T35447
where ( T20553.TIME_ID = T35447.time_id )
group by T20553.CALENDAR_YEAR
order by c1
PRODUCTS.PROD_CATEGORY
TIMES.CALENDAR_YEAR
SALES.QUANTITY_SOLD
SALES_TIME_ID.AMOUNT_SOLD
select distinct D1.c2 as c1,
D1.c3 as c2,
D1.c1 as c3,
cast(NULL as  DOUBLE PRECISION  ) as c4
from
(select sum(T20550.QUANTITY_SOLD) as c1,
T20553.CALENDAR_YEAR as c2,
T21473.PROD_CATEGORY as c3
from
TIMES T20553,
PRODUCTS T21473,
SALES T20550
where ( T20550.PROD_ID = T21473.PROD_ID and T20550.TIME_ID = T20553.TIME_ID )
group by T20553.CALENDAR_YEAR, T21473.PROD_CATEGORY
) D1
order by c1, c2, c4
Amount sold is null because SALES_TIME_ID does not contain PROD_CATEGORY attribut, it's not common.