SSRS 2008中的过滤条件

Question

I am working on SSRS 2008 for creating a simple list report. I created a Calculated field which results in two values either New or Renewal for rows.

=iif (LEFT (Fields!ProductShortName.Value, 5)= "Renew" or LEFT (Fields!ProductShortName.Value, 2)= "TR" or LEFT (Fields!ProductShortName.Value, 2)= "XR" or LEFT (Fields!ProductShortName.Value, 3)= "WOW" or LEFT (Fields!ProductShortName.Value, 3)= "Gra" or LEFT (Fields!ProductShortName.Value, 3)= "CTr" ,"Renewal", "New")

I want to further filter the data by excluding the data where the Value is "Renewal" and MaturityDate is null

For that purpose I created another calculated field:

=iif (Fields!New_Renew.Value = "Renewal" and 
      Fields!MaturityDate.Value <> "" or 
      Fields!New_Renew.Value = "New", cdbl(1),cdbl(0))

And then filter this field by 1. I get a blank report when I run it. Can anyone please suggest an appropriate coding for my requirement?

Answer 1

NULL is not the same as an empty string. NULL is an unknown value thus cannot be evaluated.

Try:

=IIF(
    (Fields!New_Renew.Value = "Renewal" AND IsDate(Fields!MaturityDate.Value))
        OR Fields!New_Renew.Value = "New", 
    cdbl(1),
    cdbl(0)
)