Thanks for the clarification, however I don't get the point of such table design. Anyway, to bypass such limitation, add an extra column as the ParentID.
new ParentID = LOOKUPVALUE(Table3[ItemId],Table3[ItemId],Table3[ParentID])
Thanks for the clarification, however I don't get the point of such table design. Anyway, to bypass such limitation, add an extra column as the ParentID.
new ParentID = LOOKUPVALUE(Table3[ItemId],Table3[ItemId],Table3[ParentID])