#96 — Identify Duplications of Row-Based Data — by Key Column


Problem description & analysis:
Here below is a personnel data table:
Task: Identify whether there are duplicate data, if so, fill in 1 in the corresponding Dup field, otherwise fill in 0 (the identifying basis is that the data in the Name field are the same).
Solution:
Use SPL XLL and rnter the formula in cell E2:
=spl("=if(?1.conj().select(~==?2).count()>1,1,0)",B$2:B$7,B2)
Then drag E2 down to every relevant row:
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esProc SPL is a JVM-based programming language designed for structured data computation, serving as both a data analysis tool and an embedded computing engine. FREE download👉🏻: https://www.esproc.com/download-esproc