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DD-TRF-001 Basic Data Cleaning and Shaping Get the data →
DD-TRF-001-Q021 Medium Time series

Distinct customers by month

After cleaning and standardising CustomerCode, count distinct customers by month. Which month has the most?
Expected
One row per month: YearMonth, distinct customers · Line chart
Tables
FactTransactions · columns
  • FactTransactions
  • TransactionDate
  • CustomerCode

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