IFERROR DAX Function (Logical)

Returns value_if_error if the first expression is an error and the value of the expression itself otherwise.

Syntax

IFERROR ( <Value>, <ValueIfError> )
Parameter Attributes Description
Value

Any value or expression.

ValueIfError

Any value or expression.

Return values

Scalar A single value of any type.

A scalar of the same type as Value

Remarks

The IFERROR function is a faster implementation of a semantically equivalent IF / ISERROR pattern.

IFERROR ( A, B )

-- Corresponds to

IF ( ISERROR ( A ), B, A )
» 3 related functions

Examples

--  IFERROR detects if the first argument produces an error.
--  In that case, it returns the second argument, without 
--  erroring out.
DEFINE
MEASURE Sales[Year Value unprotected] = 
    VAR CurrentYear = SELECTEDVALUE ( 'Date'[Calendar Year] )
    RETURN VALUE ( CurrentYear )
MEASURE Sales[Year Value] = 
    VAR CurrentYear = SELECTEDVALUE ( 'Date'[Calendar Year] )
    RETURN 
        IFERROR (
            INT ( VALUE ( CurrentYear ) ),
            INT ( VALUE ( RIGHT ( CurrentYear, 4 ) ) )
        )
EVALUATE
    SUMMARIZECOLUMNS ( 
        'Date'[Calendar Year], 
        // If you uncomment the following line, the query generates an error
        // "Year Value unprotected", [Year Value unprotected],
        "Year Value", [Year Value]
       )
ORDER BY [Calendar Year]
Calendar Year Year Value
2005-01-01 2,005
2006-01-01 2,006
2007-01-01 2,007
2008-01-01 2,008
2009-01-01 2,009
2010-01-01 2,010
2011-01-01 2,011

Related functions

Other related functions are:

Last update: May 12, 2021   » Contribute   » Show contributors

Contributors: Alberto Ferrari, Marco Russo, Kenneth Barber

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

Iterator

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.

Deprecated

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

Deprecated

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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