Add Function into Query

Hi all!

Since there is a strong limitations of functions for dataflows in a non-premium capacity, is there any chance to add a long function into the individual query itself?

I would like to use this function in a dataflows:

https://www.thebiccountant.com/2017/02/14/dynamically-flatten-parent-child-hierarchies-in-dax-and-powerbi/

Is there any chance to get this done?