ISLOGICAL

Updated on
Rick de Groot

ISLOGICAL is a DAX function that checks whether a value is a logical value (TRUE or FALSE) and returns TRUE or FALSE accordingly.

Syntax

ISLOGICAL( Value )
Argument Properties Description
Value The value you want to test.

Return Values

TRUE if the value is a logical value; FALSE if any value other than TRUE OR FALSE.

Remarks

This function is not supported for use in DirectQuery mode when used in calculated columns or row-level security (RLS) rules.

Example

The following three samples show the behavior of ISLOGICAL.

//RETURNS: Is Boolean type or Logical
= IF(ISLOGICAL(true), "Is Boolean type or Logical", "Is different type")

//RETURNS: Is Boolean type or Logical
= IF(ISLOGICAL(false), "Is Boolean type or Logical", "Is different type")

//RETURNS: Is different type
= IF(ISLOGICAL(25), "Is Boolean type or Logical", "Is different type")

Other functions related to ISLOGICAL are:

Contribute » | Contributors: Rick de Groot
Microsoft documentation: https://learn.microsoft.com/en-us/dax/islogical-function-dax

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