Vlookup with three columns to match in Excel

Question

I have put two entire clusters of data on the first sheet next to each other. I want to know which rows in the first cluster have entries in the second cluster, looking up by three column values.

For example, for a given row in the first cluster, if columns B, C, and I (first cluster) match those in columns T, U, and AA (second cluster), return 1, otherwise 0.

Answer 1

Try this formula:

=IF(SUMPRODUCT((T:T=A1)*(U:U=B1)*(AA:AA=I1)),1,0)

it will check whether first row from first cluster have entries in the second cluster and returns 1 if yes, 0 otherwise.

To return True/False, you could slightly modify your formula:

=SUMPRODUCT((T:T=A1)*(U:U=B1)*(AA:AA=I1))>0