DAX Days Between Orders Measure

Averages the number of days between a customer's consecutive orders.

Customers and RetentionAdvanceddays between ordersaveragefrequency

DAX code

Days Between Orders =
AVERAGEX(
    VALUES('Sales'[CustomerID]),
    VAR OrderDates = CALCULATETABLE(VALUES('Sales'[OrderDate]))
    VAR OrderCount = COUNTROWS(OrderDates)
    VAR Span = DATEDIFF(MINX(OrderDates, [OrderDate]), MAXX(OrderDates, [OrderDate]), DAY)
    RETURN
        IF(OrderCount > 1, DIVIDE(Span, OrderCount - 1))
)

Notes

Customers with only one order return BLANK and are excluded from the average by AVERAGEX.

Requirements

A fact table with customer ID and order date columns.

How to use this measure

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

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More DAX resources

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