String DAX Data type

Every string in DAX is stored as a Unicode (UTF-16) string, where each character is stored in at least 16 bits (2 bytes). By default, the comparison between strings is case-insensitive and accent-sensitive, so the two strings “Report” and “REPORT” are considered equal, whereas “e” and “è” are considered different.

Last update: Aug 18, 2021   » Contribute   » Show contributors

Contributors: Alberto Ferrari, Marco Russo, Jes Hansen, Kenneth Barber

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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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