COUNTIF a value within a range equals any value in an array/list
"T. Valko" wrote...
Try this:
=SUMPRODUCT(--(ISNUMBER(MATCH(Sheet2!C1:C100,ID,0))))
....
If recalc speed isn't essential,
=SUMPRODUCT(COUNTIF(ID,Sheet2!C1:C100))
should return the same result. If recalc speed is essential, I believe the
array formula
=COUNT(MATCH(Sheet2!C1:C100,ID,0))
would be faster.
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