SSRS Report Builder - 如何计算日期差异并在 2 个数据集之间添加 IFF 语句

Question

I am trying to calculate the difference in days between 2 data sets and then if the value is between 1 and 2 days then it should show compliant if the value is a negative number or greater than 2 days I want it to show non-compliant. I am not sure what I have wrong, it runs however they all show compliant

Background on the calculation needed. IMM Discharge compliance - Hospitals must deliver a copy of the signed notice to each beneficiary not more than two (2) days before the day of discharge. Follow-up notice is not required if delivery of the initial IM falls within two (2) calendar days of discharge.

FYI - the first IFF statement is because some do not have dates so that was to account for those

=IIF(
    IsNothing(Lookup(Fields!Account_Number.Value,Fields!Account_Number.Value,Fields!Intervention_Date_Of_Service.Value, "Interventions")), 
    "No Intervention", 
    IIF(
        DateDiff("d",Fields!Actual_Discharge_Date.Value,Lookup(Fields!Account_Number.Value,Fields!Account_Number.Value,Fields!Intervention_Date_Of_Service.Value, "Interventions")) <=2,
        "Compliant",
        "Non-compliant")
    )

I have tried multiple variations =1 or 2, etc if I use just the =2 they all show non-compliant

Answer 1

You have two conditions for non-compliance - the difference being negative or greater than 2 days so you have to check both conditions. Try something like this:

=IIF(IsNothing(Lookup(Fields!Account_Number.Value, Fields!Account_Number.Value, Fields!Intervention_Date_Of_Service.Value, "Interventions")), 
    "No Intervention", 
    IIF(DateDiff(DateInterval.Day, Fields!Actual_Discharge_Date.Value, Lookup(Fields!Account_Number.Value, Fields!Account_Number.Value, Fields!Intervention_Date_Of_Service.Value, "Interventions")) < 1,
        "Non-compliant", 
        IIF(DateDiff(DateInterval.Day, Fields!Actual_Discharge_Date.Value, Lookup(Fields!Account_Number.Value, Fields!Account_Number.Value, Fields!Intervention_Date_Of_Service.Value, "Interventions")) > 2,
            "Non-compliant",
            "Compliant" 
        )
    )
)