Dependent Dropdown
This example demonstrates a dependent dropdown using Power BI Part data preparation.
Tables
Calculated Columns
OrderID_Key = OrderIDOrderID_FK = RELATED('Orders'[OrderID_Key])
Measures
Distinct Orders = DISTINCTCOUNT('OrderDetails'[OrderID_FK])
New Table
DependentDropdown = CALCULATETABLE( VALUES('OrderDetails'[OrderID_FK]), FILTER( ALL('OrderDetails'[OrderID_FK]), COUNTROWS('OrderDetails') <= [Distinct Orders] ) )