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TungNguyen_19's avatar
TungNguyen_19
Icon for Helper III rankHelper III
2 years ago

What does this expression of FIRSTNONBLANK function do?

Hi everyone,

I received legacy Power BI report and in there I found this calculated column fomular:

USERGROUP =  IF(SystemLogs[Source] <> "Auto", FIRSTNONBLANK('ac Users'[TYPE GROUPS] , 0), "System")

'SystemLogs' contains this calculated column and these tables have relationship:

In normal way I usually use is add other column which check Blank value for the function FIRSTNONBLANK but this function still work with scalar value? I have change the number to bigger than 2 and the result returns the same. What does this expression works? Can anyone else face to this use?

Need Help

1 Reply

  • Fowmy's avatar
    Fowmy
    Icon for Super User rankSuper User
    2 years ago

    TungNguyen_19 

    Using FIRSTNONBLANK('ac Users'[TYPE GROUPS] , 0) in this case is same as MIN( 'ac Users'[TYPE GROUPS]  ). 
    If an expression that returns a calucaltion is used in FIRSTNONBLANK in place of 0 then using it makes sense.