Edit

Share via

ISSTRING

Applies to: Calculated column Calculated table Measure Visual calculation

Checks if a value is text, and returns TRUE or FALSE.

Syntax

ISSTRING(<value>)

Parameters

Term Definition
value The value you want to check.

Return value

TRUE if the value is text; otherwise FALSE.

Remarks

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

Example

The following DAX query shows the behavior of the ISSTRING function.

EVALUATE
{
    IF ( ISSTRING ( "text" ), "Is Text", "Is Non-Text" ), // RETURNS: Is Text
    IF ( ISSTRING ( "" ), "Is Text", "Is Non-Text" ), // RETURNS: Is Text
    IF ( ISSTRING ( 42 ), "Is Text", "Is Non-Text" ), // RETURNS: Is Non-Text
    IF ( ISSTRING ( BLANK () ), "Is Text", "Is Non-Text" ) // RETURNS: Is Non-Text
}

Related content