DAX Cumulative Distinct Count Measure

Notes

This counts a customer once even if they've purchased in multiple periods within the cumulative window.

Requirements

• A marked Date table and a customer ID column.

How to use this measure

1. In Power BI Desktop, select the table that should hold the measure and choose New measure on the ribbon.
2. Paste the code, then replace the placeholder table and column names with your own. The My table names fields above do this for you.
3. Run it through the DAX Formatter if you want it laid out in your team's style.

Related DAX measures

• Distinct Count with a ConditionCounts distinct values of a column, but only for rows that meet a filter condition.
• Cumulative TotalAccumulates sales from the start of the data through the current date filter context.
• Running BalanceAccumulates a transaction amount into a running balance up to the current date filter context.
• Cumulative BudgetAccumulates the budgeted amount from the start of the year through the current date filter context.
• Dynamic Segmentation (Banding)Buckets customers into segments using a separate banding table instead of hardcoded thresholds, so the bands can be edited without touching DAX.
• Repeat Purchase RateExpresses the percentage of customers who placed more than one order, out of all customers.

More DAX resources

Browse all 175 measures in the Power BI DAX Measures Library, or search the library for something similar to Cumulative Distinct Count.