在 SSRS 中使用 IIF

Question

我正在尝试计算每个组的百分比值（逻辑为 'Group A Calls / Total Calls'）。

问题是对于某些组我需要使用 (MAX(Fields!OverallCalls.Value) 而对于其他组我需要使用 (MAX(Fields!TotalCalls.Value)。出于这个原因，我在最底部添加了一个额外的 IIF 语句，但是，由于某种原因，我收到一条错误消息：'Too many arguments to Public Functions IsNothing(Expression As Object) As Boolean'.

=FORMATPERCENT(
       Sum(
IIF(Fields!Group.Value = "Dissatisfactions Total",
       Fields!TotalDissatisfactions.Value,
IIF(Fields!Group.Value = "RID Total",
       Fields!TotalRidDissatisfactions.Value,
       IIF(
              Fields!Group.Value = "CRT" OR
              Fields!Group.Value = "Escalations"
              ,Fields!ComplaintID.Value
              ,IIF(
                           Fields!Group.Value = "Calls"
                           ,Fields!Calls.Value
                           ,0
                     )
       )
       )
       )  
       ) / IIF(IsNothing(MAX(Fields!OverallCalls.Value), (MAX(Fields!TotalCalls.Value), (MAX(Fields!OverallCalls.Value)
       )

Answer 1

存在缺少括号的错误。

试试下面的代码

=FORMATPERCENT(
Sum(
    IIF(Fields!Group.Value = "Dissatisfactions Total",
        Fields!TotalDissatisfactions.Value,
        IIF(Fields!Group.Value = "RID Total",
            Fields!TotalRidDissatisfactions.Value,
            IIF(
            Fields!Group.Value = "CRT" OR Fields!Group.Value = "Escalations",
                Fields!ComplaintID.Value,
                IIF(
                    Fields!Group.Value = "Calls",
                    Fields!Calls.Value,
                    0
                    )
                )
            )
        )  
   ) 
   / 
   IIF(IsNothing(MAX(Fields!OverallCalls.Value)),  
        MAX(Fields!TotalCalls.Value),  
        MAX(Fields!OverallCalls.Value) 
    )
   )

另外，当你有许多嵌套的 Iif 语句时，为了更好的可读性，我建议像下面的代码一样使用 switch

=FORMATPERCENT(
Sum(
    Switch (
        Fields!Group.Value = "Dissatisfactions Total", Fields!TotalDissatisfactions.Value,
        Fields!Group.Value = "RID Total", Fields!TotalRidDissatisfactions.Value,
        Fields!Group.Value = "CRT" OR Fields!Group.Value = "Escalations", Fields!ComplaintID.Value,
        Fields!Group.Value = "Calls", Fields!Calls.Value,
        True, 0
        )

   / 
   IIF(IsNothing(MAX(Fields!OverallCalls.Value)),  
        MAX(Fields!TotalCalls.Value),  
        MAX(Fields!OverallCalls.Value) 
    )
   )

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