Press "Enter" to skip to content

Marking a Table in DAX as a Date Table

Alberto Ferrari explains why you have to mark a date table as such in Power BI:

Even though this probably does not surprise you, in fact it should. The measure – as it is written – should not work. The reason why it works is because the relationship between Sales and Date is using the Sales[Order Date] column. Sales[Order Date] has a Date data type. If we use an integer to relate the two tables instead of using a Date column, the formula stops working. We now change the relationship using the integer column Sales[OrderDateKey] instead of the Sales[Order Date].

Read the whole thing.