Hi,
Any help as ever much appreciated.
I need to count the number of unique names (column A) on 3 separate worksheets.
Each worksheet represents a facility that people visit. It is possible that the same person will visit all three facilities. If this is the case I want to only count them once, even though they may have numerous entries on each.
I need to get the same result as if I was to copy and paste all of the names from three spreadsheets on to one (which isnt an option) and then count unique names.
To do this on one sheet I have been using =sumproduct((A1:A100<>"")/countif(A1:a100,A1:A100))
Thanks, hope the explanation makes sense.
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