HASONEFILTER DAX Function (Information)

Returns true when the specified table or column has one and only one value resulting from direct filter(s).


HASONEFILTER ( <ColumnName> )
Parameter Attributes Description

The column to check the filter info.

Return values

Scalar A single boolean value.

TRUE when the number of directly filtered values on ColumnName is one; otherwise returns FALSE.


This function is similar to HASONEVALUE with the difference that HASONEVALUE works based on cross-filters while HASONEFILTER works by a direct filter.

HASONEFILTER corresponds to the following code:

COUNTROWS ( FILTERS ( <ColumnName> ) ) = 1

Related functions

Other related functions are:

Last update: Feb 25, 2021   » Contribute   » Show contributors

Contributors: Alberto Ferrari, Marco Russo, Tas Ranson

MSDN documentation: https://docs.microsoft.com/en-us/dax/hasonefilter-function-dax

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Context Transition

This function performs a Context Transition if called in a Row Context. Click to read more.

Row Context

This expression is executed in a Row Context. Click to read more.


Not recommended

The use of this function is not recommended. See Remarks and Related functions for alternatives.

Not recommended

The use of this parameter is not recommended.


This function is deprecated. Jump to the Alternatives section to see the function to use.


This parameter is deprecated and its use is not recommended.

DirectQuery compatibility

Limitations are placed on DAX expressions allowed in measures and calculated columns.
The state below shows the DirectQuery compatibility of the DAX function.


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