How does the APPROXIMATEDISTINCTCOUNT function (DAX) work?
The APPROXIMATEDISTINCTCOUNT function (DAX) returns the approximate number of rows that contain distinct values in a column.
APPROXIMATEDISTINCTCOUNT Formula Syntax
How do you use the APPROXIMATEDISTINCTCOUNT function?
This function can query large amounts of data with potentially better performance than DISTINCTCOUNT, with slight deviation from the exact result.
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Considerations when using the APPROXIMATEDISTINCTCOUNT function
The only argument 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.
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Formula examples using the APPROXIMATEDISTINCTCOUNT function
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