HASONEVALUE DAX Function (Information)

Returns true when there’s only one value in the specified column.


HASONEVALUE ( <ColumnName> )
Parameter Attributes Description

The column to check the filter info.

Return values

Scalar A single boolean value.

TRUE when the context for ColumnName has been filtered down to one distinct value only. Otherwise is FALSE.


HASONEVALUE corresponds to the following code:

COUNTROWS ( VALUES ( <ColumnName> ) ) = 1
» 3 related articles
» 2 related functions


--  HASONEVALUE checks that a column has only one value 
--  visible in the current filter context
    MEASURE Sales[Audio only] =
        CALCULATE (
            HASONEVALUE ( 'Product'[Category] ),
            'Product'[Category] = "Audio"
    MEASURE Sales[Audio and computers] =
        CALCULATE (
            HASONEVALUE ( 'Product'[Category] ),
            'Product'[Category] IN { "Audio", "Computers" }
    MEASURE Sales[Audio and bananas] =
        CALCULATE (
            HASONEVALUE ( 'Product'[Category] ),
            'Product'[Category] IN { "Audio", "Bananas" }
     ( "Audio only", [Audio only] ),
     ( "Audio and computers", [Audio and computers] ),
     ( "Audio and bananas", [Audio and bananas] )
Value1 Value2
Audio only true
Audio and computers false
Audio and bananas true

Related articles

Learn more about HASONEVALUE in the following articles:

Related functions

Other related functions are:

Last update: Jul 19, 2024   » Contribute   » Show contributors

Contributors: Alberto Ferrari, Marco Russo

Microsoft documentation: https://docs.microsoft.com/en-us/dax/hasonevalue-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.


A volatile function may return a different result every time you call it, even if you provide the same arguments. Click to read more.


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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