CUSTOMDATA DAX Function (Information)

Returns the value of the CustomData connection string property if defined; otherwise, BLANK().


The content of the CustomData property in the connection string. Blank, if CustomData property was not defined at connection time.

This expression has no parameters.

Return values

Scalar A single string value.


This function is commonly used implementing expressions for role based security when an application uses custom authentication.

Last update: Aug 3, 2019   » Contribute   » Show contributors

Contributors: Alberto Ferrari, Marco Russo

MSDN documentation:

DAX Conventions
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.


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