## How does the DISTINCTCOUNT function (DAX) work?

The DISTINCTCOUNT function (DAX) counts the number of distinct values in a column.

DISTINCTCOUNT(
<column>
)

## How do you use the DISTINCTCOUNT function?

The DISTINCTCOUNT function is used to disregard duplicated customer IDs, so it counts the number of individual customers that each product has.

## Related Support Forum Posts

Iterating a distinctcount between two tables
Wrong values in table
Distinct count for events generated by the same customers

## Considerations when using the DISTINCTCOUNT function

The only argument allowed to this function is a column. You can use columns containing any type of data. When the function finds no rows to count, it returns a BLANK, otherwise it returns the count of distinct values.

DISTINCTCOUNT function includes the BLANK value. To skip the BLANK value, use the DISTINCTCOUNTNOBLANK function.

## Formula examples using the DISTINCTCOUNT function

=DISTINCTCOUNT(ResellerSales_USD[SalesOrderNumber]) “`dax Using the above measure in a table with calendar year in the side and product category on top gives the following results: |Distinct Reseller Orders count|Column Labels|||||| |-|-|-|-|-|-|-| |Row Labels|Accessories|Bikes|Clothing|Components||Grand Total| |2005|135|345|242|205||366| |2006|356|850|644|702||1015| |2007|531|1234|963|1138||1521| |2008|293|724|561|601||894| ||||||1|1| |Grand Total|1315|3153|2410|2646|1|3797| In the above example, note that the rows Grand Total numbers do not add up, this happens because the same order might contain line items, in the same order, from different product categories.

= DISTINCTCOUNT (Sales[Account])

= CALCULATE(DISTINCTCOUNT(‘Net Revenue Data'[Publisher Name]),FILTER(‘Net Revenue Data’,’Net Revenue Data'[Active Month]=1))