I have a few tables in Azure Analysis Model as shown below. I am using PowerBI to write a few measures.
DimProducts
+-----------------+--------+
| ProductId | Name |
+-----------------+--------+
| 1 | p1 |
| 2 | p2 |
| 3 | p3 |
| 4 | p4 |
| 5 | p5 |
| 6 | ` p7 |
+-----------------+--------+
FactSales
+-----------+-------------+----------+
| ProductId | Date | Quantity |
+-----------+-------------+----------+
| 1 | 2016-02-01 | 1 |
| 1 | 2016-02-01 | 5 |
| 1 | 2016-02-05 | 7 |
| 2 | 2016-02-05 | 7 |
| 2 | 2016-02-08 | 10 |
+-----------+-------------+----------+
I need to find the sum quanity of sales. I need to find the sum of quantity sold for the max date outside the filter. The date filter for example is 2016-02-08. The max date below this filter is 2016-05-02 and the sum quantity for productid 2 is 7(4th line in factSales table). How could i write a measure for this?