Hi all,
I have a rather interesting question. What I want to do is to create a Customer Price List with Dynamics NAV data.
That means the output is a list with Items with a Customer Unit Price, based on different variables (like Line Discount or specific price). The input is a filter on customer.
So basically I want to calculate a new column, based on multiple tables with some logic statements. But how should I translate that to a DAX statement?
I tried to put the architecture of the tables and the relevant fields below. Hopefully someone can help me out. 
Table Customer
- Customer No
- Customer Name
- Customer Discount Group
Table Item
- Item No
- Item Discount Group
- Unit Price
Table Sales Line Discount
- Sales Type [Customer or Customer Discount Group]
- Sales Code [Customer No or Customer Discount Group Code]
- Type [Item or Item Discount Group]
- Code [Item No or Item Discount Group Code]
- Starting Date
- Ending Date
- Line Discount %
Table Sales Prices
- Item No
- Sales Type
- Sales Code
- Unit Price
The filter is set on Customer.
The output is a list with items, with a calculated customer price.
The Field CustomerPrices is a new calculated field (new column).
The logic is:
- CustomerPrice of Item is Unit Price - Line Discount
- Or if for this Item exsist in the Table Sales Price, then that is the Customer Price
- Line Discount is calculated form the table Sales Line Discount based on:
- The customer is lised directly in the table with a Line Discount (prio 1)
- The customer is part of a Customer Discount Group, which code is listed in the table with a Line Discount (prio 2)
- The most recent starting date is valid