The DAX language

The DAX language was created specifically for the handling of data models, through the use of formulas and expressions. DAX is used in several Microsoft Products such as Microsoft Power BI, Microsoft Analysis Services and Microsoft Power Pivot for Excel. These products all share the same internal engine, called Tabular.


Browse DAX functions alphabetically from the sidebar or choose a category below:

Statements, Operators and Data types

As well as for functions, DAX Guide provides a reference for other entities such as:


Latest DAX functions released:

» See all the latest updates

About this Reference

The curated content of DAX Guide makes it a go-to reference on the DAX language.

DAX Guide is updated automatically, through the monitoring of new versions of Microsoft products. For every DAX function, DAX Guide offers a compatibility matrix for versions/products supported. Every function/argument is marked with attributes highlighting its behavior regarding row context and context transition.

DAX Guide integrates and expands on the Microsoft documentation.

About the Authors

The content of DAX Guide is curated by a small number of authors referenced in each page.

Contributions and suggestions are welcome.

DAX Guide is a project by SQLBI.

Last site update: Nov 30, 2022

2018-2022 © SQLBI. All rights are reserved. Information coming from Microsoft documentation is property of Microsoft Corp. » Contact us   » Privacy Policy & Cookies

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.


Want to improve the content of The DAX language? Did you find any issue?
Please, report it us! All submissions will be evaluated for possible updates of the content.

This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.