Visual studio 2010 IIF在SSRS中的应用

我试图计算每个组的%值（逻辑为“A组调用/总调用”）

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，出于某种原因，我得到一个错误，它说：“公共函数的参数太多等于零（表达式为对象）”作为布尔值'

=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)
       )

---

有缺少括号的错误

请尝试以下代码

=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) 
    )
   )

=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) 
    )
   )   

另外，为了更好的可读性，当您有许多嵌套的Iif语句时，我建议使用如下代码中的switch

=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) 
    )
   )

=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) 
    )
   )