You can use the following syntax in DAX to count the number of distinct values in a column of a table:

Distinct Points = DISTINCTCOUNT('my_data'[Points])

This particular example creates a new measure named **Distinct Points** that counts the distinct number of values in the **Points** column of the table named **my_data**.

The following example shows how to use this formula in practice.

**Example: How to Count Distinct Values in Column in Power BI**

Suppose we have the following table in Power BI named **my_data** that contains information about points scored by basketball players on various teams:

Suppose that we would like to count the number of distinct values in the **Points** column of the table.

To do so, click the **Table tools** tab along the top ribbon, then click the **New measure **icon:

Then type in the following formula into the formula bar:

Distinct Points = DISTINCTCOUNT('my_data'[Points])

This will create a new measure named **Distinct Points **that contains the count of distinct values in the **Points** column of the table:

If we’d like, we can display this value by going to the **Report View** in Power BI, then by clicking the **Card** icon under the **Visualizations** tab, then by dragging the **Distinct Points** measure under the **Fields** label:

This will produce the following card that displays the count of distinct values in the **Points** column of the table:

We can see that there are **12** distinct values in the **Points** column.

**Note**: You can find the complete documentation for the **DISTINCTCOUNT **function in DAX here.

**Additional Resources**

The following tutorials explain how to perform other common tasks in Power BI:

How to Count Number of Occurrences in Power BI

How to Calculate Standard Deviation in Power BI

How to Calculate a Cumulative Sum in Power BI