Hi To All-
I am having trouble trying to develop a formula that will count the unique months for a given ID.
Two sheets, the first has the Unique ID and that is where I want the formula.
The second sheet has one to multiple entries for each unique ID on sheet 1
I have attached a worksheet showing what I am trying to do. I've played around with this all morning, search the Web but haven't found the answer.
Any help you can give me will be extremely appreciated.
Thanks,
Jim
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