Aggregation error

Question

Hi,
I have a materialized view with:
- date
- CustomerId
- Sales Manager
- Region
- Amount
- Qty
In AWM 10gR2, I build a cube only using Date and Region dimensions. So I suppose AWM do a select like this to make the cube:
SELECT Date, Region, SUM(Amount), SUM(QTY)
FROM MV_Orders
GROUP BY Date, Region
But when I saw data in cube it just take 2 rows of 50, instead the log said "50 records read, 0 records rejected".
I look the data in the materialized view and this 2 rows are corresponding to: "select distinct" for Date and Region.
The aggregate for the dimensions are SUM...
I don't know what is happening...
Any idea?
Thanks.

Answer 1

In your case all of the 50 rows where loaded. But all rows were replaced with the next row which has the same Date/Region values. So in the end you don't have SUM of your measure, but just the last value for the Date/Region combo.
Your fact table should be grouped by those two dimesnions.
So you should create a view:
SELECT Date, Region, SUM(Amount), SUM(QTY)
FROM MV_Orders
GROUP BY Date, Region
And then you create a cube based on this view.
Raf