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st: analogue of NODUPKEY
I am looking for a Stata analogue of a SAS procedure for a certain type of
duplicate removal. Suppose a dataset has fields A-J. For all subsets of
records for which fields A-C are identical, I wish to keep only the first
record and discard the rest, keeping all fields of the retained records.
What is the simplest way to do this with Stata commands?
Thanks very much in advance.
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