I divide my problem in several little problems and, since the beginning, I have a problem.
I try to filter a field with another field.
This is the kind of data that I have :
Before trying to have the average amount where Winner=User_A, I would like to do only a filter "Winner=User_A" but I don't success (error about aggregation, about unique field, ...).
Could you explain me the process please ?
Oh sorry, I just found with the tutorial with count(if [Winner]=[User_A] then 1 else NULL end)>=1
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