excel vba - Summing up a column based on multiple Criterion -


basically

column 1 contains many names,
column 2 contains unique version of many names,
column 3 contains either 1 or 0

i want sum values in column 3 based on column 1 matching column 2

eg

a        b        c vba     vba       1 vba     xy        0 xy      zx        1 zx                1 xy                1 vba               0 xy                1 zx                1

so want produce 4th column equal in length column b follows

vba    1 xy     3 zx     2

i've tried few different ways , cant seem work. appreciated

you can use

=sumproduct(($c$1:$c$8)*($a$1:$a$8=b1))

drag/copy down required. change range needed. see image reference.

enter image description here


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