Sum column X based on value in column Y not being in array Z

Question

To keep things simple I have 3 columns (place holders used)

X - Contains Revenue Y - Contains a number (hotel room number) Z - Independent list of numbers (room numbers belonging to a certain category)

I'm trying to tally all the revenue in column X for rooms that do not appear in Column Z. Here is my attempt:

=SUMIFS(X2:X2000,Y2:Y2000,"<>"&Z2:Z198)

But that is still totaling all the revenue without the conditional. Pointers?

Answer 1

Try it with a SUMPRODUCT function .

As a standard formula,

=SUMPRODUCT(X2:X2000, --ISERROR(MATCH(Y2:Y2000, Z2:Z198, 0)))

Keep column X and column Y references limited to the actual data but the same size. Column Z should likewise be limited but does not necessarily have to be hte same size. Do not use full column references.