https://learn.microsoft.com/en-us/dax/crossfilter-function
https://learn.microsoft.com/en-us/power-bi/transform-model/desktop-relationships-understand
https://learn.microsoft.com/en-us/dax/calculate-function-dax
https://learn.microsoft.com/en-us/training/paths/dax-power-bi/
https://learn.microsoft.com/en-us/dax/aggregation-functions-dax