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SUM function does not work when some cells are blank in Access2010
Hello, I am having the similiar problem but when I enter the expression =Nz([JanUS],0)+Nz([FebUs],0)+Nz([MarUS],0) I get an error message that says "The expression Nz([JanUS],0)+Nz([FebUs],0)+Nz([MarUS],0) cannot be used in a calculated column. The fields I am trying to add are Long...