9.11 Deduplication of row-based data - by key column - keeping order

 

There is a data table:

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Find out the data that are not duplicate and the first duplicate data in the Name column:

=spl("=E(?1).group@u(Name).(~(1))",A1:D7)

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esProc Desktop and Excel Processing
9.10 Deduplication of simple data - keeping order
9.12 Deduplication of row-based data - by whole row - keeping order