I am struggling with a calculation in DAX. I want to add the column "Children" to my dataset (I have one fact_Table, as displayed below). For example, ID 2 shows up twice under Parent and therefore has 2 children. So the number of times the ID value pops up in other rows is the amount of Children records.
I used COUNTROWS and LOOKUPVALUE to no avail, I am hoping anyone here knows how to calculate this column.