#100 — Deduplication of Row-Based Data — by Key Column

Problem description & analysis:

There is a data table:

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

Solution:

Use SPL XLL and enter the following code:

=spl("=E(?1).group(Name).(~(1))",A1:D7)
The results are shown below:

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