COUNTIF can be a memory hog when you create 10s of thousands against the same data set ad nauseum. If all you need is to spot if a value has occurred already, MATCH is distinctively quicker.
=IF(AND(A2<>"", ISNUMBER(MATCH(A2, $A$1:$A1, 0))), "ripetuto", "")
...copied down ad nauseum.
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Hello Jbeaucarie.
It seems faster.
In italian the formula is:
=SE(E(A2<>""; VAL.NUMERO(CONFRONTA(A2; $A$1:$A1; 0))); "ripetuto"; "")
Thank you.
max_max
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