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5 lut 2014 · If Access does not allow Nz() to be used in a Calculated field then you can use this instead: IIf(IsNull([Number1]),0,[Number1])+IIf(IsNull([Number2]),0,[Number2]) Edit re: comment. To return Null if both components are Null, try. IIf(IsNull([Number1]) And IsNull([Number2]),Null,IIf(IsNull([Number1]),0,[Number1])+IIf(IsNull([Number2]),0,[Number2]))
6 cze 2011 · You can add a procedure like this to your module code... Public Function CalculateFieldC(ByVal fieldA as Long, ByVal fieldB as Long) as Single. If fieldA = 0 Then. CalculateFieldC = 0. Else: CalculateFieldC = fieldB / fieldA.
You can use the Nz function to return zero, a zero-length string (" "), or another specified value when a Variant is Null. For example, you can use this function to convert a Null value to another value and prevent it from propagating through an expression.
24 cze 2009 · If cost3 is Null, then cost1+cost2+cost3+cost4 is going to produce a Null results, and so the result from Nz(cost1+cost2+cost3+cost4 ) will be Zero. You need to use the Nz() function for each component formula = Nz(cost1) + Nz(cost2) + Nz(cost3) + Nz(cost4) which only converts the Null values to zeros, leaving other values as they are for the ...
An expression is a combination of mathematical or logical operators, constants, functions, table fields, controls, and properties that evaluates to a single value. You can use expressions in Access to calculate values, validate data, and set a default value. In this article.
In Access, if you need to calculate or display a value based on a condition, use the IIf function. The IIf (Immediate If) function is similar to the If function in Excel.
22 lut 2016 · IIF([New No] IS NULL, [Old No],[New No]) AS [No] FROM [YourTable]; If you intend to delete the old and new numbers, and retain only the [No] values, then simply update the [New No] column with
