Count unique values in column B for each value in column A

[nkopp]

I'm trying to count the number of workers that my managers have to interact with and I'm not having any luck. Column A is a list of projects, Column B is a list of managers, and Column C is a list of workers. I want to run a second table that calculates the number of workers that each manager has to work with. Any thoughts?

Project Name	Manager	Worker
Alpha	Ann	Brett
Bravo	Ann	Colin
Charlie	Ann	Colin
Delta	Ann	Dave
Echo	Ellen	Dave
Foxtrot	Ellen	Dave
Golf	Ellen	Dave
Hotel	Ellen	Colin
India	Ellen	Colin

Manager	Number of Workers
Ann	3
Ellen	2

[benishiryo]

hi nkopp, welcome to the forum. assuming your 1st table is in A1:C10 and the 2nd is from E1 (meaning "Ann" is in E2), use copy this formula & paste into the formula bar of F2:
=SUMPRODUCT(1*(FREQUENCY(IF($B$2:$B$10=E2,MATCH("~"&$C$2:$C$10,$C$2:$C$10&"",0)),ROW($C$2:$C$10)-ROW($C$1))>0))

press CTRL + SHIFT + ENTER to confirm

[nkopp]

That's perfect. Thanks for the help!!

[Cutter]

@ nkopp

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