SSRS Formula or expression to change NaN to 0

问题

I am using the following expression to work out a percentage:

=Fields!Days.Value/Sum(Fields!Days.Value, "Date_month_name")

Days.Value is showing as 0 however in a few of my results instead of reading 0% in my percentage column it is actually reading NaN (Not a Number).

Does anyone know the exact expression forumla i need and where I should paste it in my current expression to say "Where NaN is showing, put a '0' instead?"

(See image)

回答1:

How about

=IIF(Fields!Days.Value > 0,Fields!Days.Value/Sum(Fields!Days.Value, "Date_month_name"),0)

回答2:

I didn't have luck with the above answers. Here's what worked for me:

=IIF(Single.IsNAN(Fields!Days.Value/Sum(Fields!Days.Value, "Date_month_name")), 0, Fields!Days.Value/Sum(Fields!Days.Value, "Date_month_name"))

回答3:

I used this for similar case,

=REPLACE(Fields!Days.Value/Sum(Fields!Days.Value, "Date_month_name"),"NaN","0")

回答4:

Here's another option. It should solve the problem, and also get rid of Infinite responses:

=val(replace(Fields!Days.Value/Sum(Fields!Days.Value, "Date_month_name"),"NaN","0"))

回答5:

This is the simplest & best, I think,

=Switch(
Fields!Days.Value/Sum(Fields!Days.Value, "Date_month_name") = "NaN",Nothing,
Fields!Days.Value/Sum(Fields!Days.Value, "Date_month_name") = "Infinity",Nothing,
Fields!Days.Value/Sum(Fields!Days.Value, "Date_month_name") = "-Infinity",Nothing
)

You can also put a 0 instead of nothing.

回答6:

Try

=IIf(Fields!Days.Value Is Nothing Or Sum(Fields!Days.Value, "Date_month_name") Is Nothing, 0, Fields!Days.Value / Sum(Fields!Days.Value, "Date_month_name"))

回答7:

I had a similar issue to this and found that the following was easiest to do.

=Iif(
Fields!Days.Value.Value <> 0 AND Sum(Fields!Days.Value, "Date_month_name") <> 0
, Fields!Days.Value.Value/Sum(Fields!Days.Value, "Date_month_name")
, 0
)

Probably not the best solution, but works.

来源：https://stackoverflow.com/questions/8836450/ssrs-formula-or-expression-to-change-nan-to-0