I could just look this up, but I'll be lazy.
I want to name multiple instances of a value.
Ref.No - Date - Instance
123 01/01/2009 1st
123 06/01/2009 2nd
122 07/02/2009 1st
Column "Instance" to look at "Ref.No" and "Date", giving the result of "1st instance", etc. (Using dates order)
I've tried arrays of Match and count, but I'm stuck.
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