FIRSTNONBLANK Function (DAX)
Returns the first value in the column, column, filtered by the current context, where the expression is not blank.
A column expression.
An expression evaluated for blanks for each value of column.
A table containing a single column and single row with the computed first value.
The column argument can be any of the following:
A reference to any column.
A table with a single column.
A Boolean expression that defines a single-column table .
Constraints on Boolean expressions are described in the topic, CALCULATE Function (DAX).
This function is typically used to return the first value of a column for which the expression is not blank. For example, you could get the last value for which there were sales of a product.
This DAX function is not supported for use in DirectQuery mode. For more information about limitations in DirectQuery models, see http://go.microsoft.com/fwlink/?LinkId=219172.