Hi,
I have one column with code letters such as T, S, P, O, the other column values. I want to sum the values when a corresponding matching letter is present.
=SUMPRODUCT(--(CAT="T"),DV12:DV74)
Works, but
=SUMPRODUCT(--(CAT="T"),--(CAT="O"),DV12:DV74)
does not.
I even tried...