Divide By 0 Error on Lookup RRS feed

  • Question

  • Hello,

    Running into a simple divide by 0 issues I cannot seem to workaround. I have a lookup in my expression, can anyone offer suggestions how to build this

    In the past I have used custom code such as:

     Public Function Divide(ByVal first As Double, ByVal second As Double) As Double
            If second = 0 Then
                Return 0
                Return first / second
            End If
        End Function

    This does not seem to work with my lookup. 

    My expression is:

    =SUM(Lookup(Fields!pTrans.Value, Fields!pTrans.Value, Fields!salesCurYrValue.Value, "CurrentYr_DS")-Fields!salesPrevYrValue.Value)/Fields!salesPrevYrValue.Value


    Monday, July 16, 2018 7:14 PM

All replies

  • you can still do this

    =IIF(Fields!salesPrevYrValue.Value > 0,SUM(Lookup(Fields!pTrans.Value, Fields!pTrans.Value, Fields!salesCurYrValue.Value, "CurrentYr_DS")-Fields!salesPrevYrValue.Value)/IIF(Fields!salesPrevYrValue.Value > 0,Fields!salesPrevYrValue.Value,1),0)

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    Monday, July 16, 2018 7:20 PM
  • Hi GiracBa,

    In your scenario, you use the custom code which is used for denominator is 0. But in your expression you didn't use this function. You could try to use =code.Divide(SUM(Lookup(Fields!pTrans.Value, Fields!pTrans.Value, Fields!salesCurYrValue.Value, "CurrentYr_DS")-Fields!salesPrevYrValue.Value),Fields!salesPrevYrValue.Value) to see whether it works or not.

    Or you could use expression like below instead of using custom code

    =iif(Fields!salesPrevYrValue.Value=0,0,SUM(Lookup(Fields!pTrans.Value, Fields!pTrans.Value, Fields!salesCurYrValue.Value, "CurrentYr_DS")-Fields!salesPrevYrValue.Value)/iif(Fields!salesPrevYrValue.Value=0,1,Fields!salesPrevYrValue.Value))

    Best Regards,
    Zoe Zhi

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    Tuesday, July 17, 2018 1:38 AM