DAX treats 0 as BLANK: how to prevent it?

[gabriela]

Hello,

I have a data with many missing values for variable X and I'd like to do a simple transformation of this variable such as adding 3 to all values. 

I tried the formula below:

X_new = if('Data'[X]  = BLANK (); BLANK(); 'Data)'[X] + 3)

And it works almost perfectly (returns BLANK for those rows which have missing value) but the problem is that now also the rows with value = 0 are treated as BLANK. So, in the end, I have more missing values for variable X_new than for original variable X.

I'd appreciate suggestion how to deal with this problem.

Gabriela

[Zubair_Muhammad · Accepted solution]

Hi @gabriela

USe this instead

X_New =
IF ( NOT ( ISBLANK ( Data[X] ) ), Data[X] + 3 )

[gabriela]

Thank you @Zubair_Muhammad for such a quick reply. It worked perfectly!

The follow-up question: do you know why 0 were treated as missing values (BLANK) with my formula? I'm trying to understand the syntax of DAX. 

Thanks,

Gabriela 

[Zubair_Muhammad]

Hi @gabriela

The problem comes from the "=" OPERATOR

In DAX terms

BLANK() = 0 = true

but

ISBLANK(0)= FALSE

So formulas below give different results

=if('Data'[X]  = BLANK (), BLANK(), 'Data'[X] + 3)

=if(ISBLANK('Data'[X]) , BLANK(), 'Data'[X] + 3)