DISTINCTCOUNT is a DAX function that counts the number of distinct values in a specified column.
DISTINCTCOUNT( ColumnName )| Argument | Properties | Description |
|---|---|---|
| ColumnName | The column for which the distinct values are counted. |
The number of distinct values in column.
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 counts the BLANK value. To skip the BLANK value, use the DISTINCTCOUNTNOBLANK function.
This function is not supported for use in DirectQuery mode when used in calculated columns or row-level security (RLS) rules.
The following example shows how to count the number of distinct sales orders in the column ResellerSales_USD[SalesOrderNumber].
= DISTINCTCOUNT(ResellerSales_USD[SalesOrderNumber])
Using the above measure in a table with calendar year in the side and product category on top returns the following results:
| 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.
Learn more about DISTINCTCOUNT in the following articles:
Other functions related to DISTINCTCOUNT are:
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