Hi, Marco,
Try: =SUMPRODUCT(((A1:A4)="Alex")*(B1:B4))
Regards.

--
JRod
Microsoft MVP - Excel
http://EXCELer.blogspot.com

"Marco" escreveu na mensagem
...
I have a matrix with two columns. The first column contains names while the
second contains values. I would like to sum all values that matche the
string
in the first column, so for example
A B
1 Mike 200
2 Alex 100
3 Frank 110
4 Alex 180

and the matching string is Alex, the returning valus is 280

thanks