Power Pivot Principles: The A to Z of DAX Functions – COUNTA
6 September 2022
In our long-established Power Pivot Principles articles, we continue our series on the A to Z of Data Analysis eXpression (DAX) functions. This week, we look at COUNTA.
The COUNTA function
This function counts the number of rows in a specified column that contain non-blank values.
The COUNTA function employs the following syntax to operate:
The COUNTA function has just the one argument:
- column: this is required and represents the column (field) containing the values to be counted
It should be further noted that:
- when the function finds no rows to count, it returns a blank
- unlike COUNT, COUNTA supports the Boolean (TRUE / FALSE) data type
- this function is not supported for use in DirectQuery mode when used in calculated columns or row-level security (RLS) rules.
Consider the following Table called Example, with just the field, List:
Let’s create a simple measure:
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