I have the following query
SELECT Points.Id, DateAdd("d",-1,DateAdd("m",1,"01/" & Format(DateAdd("d",-15,[Date]),"mm/yyyy"))) AS [Month], DataWater.Units, Int(([DataWater].[Units]/([Date]-(DateAdd("d",0,DMax("[Date]","DataWater","[Point_Id] = " & [Points].[Id] & " And [Direct] = 'D' And [Date]...