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Remove duplicate rows.
Keep the first record for each unique 'Customer Id':
•Check the column(s) you wish to look for duplicate values in.
•Check case sensitive to use case sensitive matching.
•Rows are considered duplicates if they have exactly the same value in all the checked columns.
•When several rows are duplicates, only the top one is retained.
•The Unique transform is a more powerful (but more complex and slower) alternative to Dedupe.