TREATAS DAX Function (Table manipulation)

Treats the columns of the input table as columns from other tables.For each column, filters out any values that are not present in its respective output column.


TREATAS ( <Expression>, <ColumnName> [, <ColumnName> [, … ] ] )
Parameter Attributes Description

The expression that generates the set of columns to be remapped.

ColumnName Repeatable

The name of the output column.

Return values

Table An entire table or a table with one or more columns.

A table that contains all the rows in column(s) that are also in Expression.


TREATAS assigns the data lineage of the columns returned by the expression using the columns pass in the following arguments. The result can be assigned to a variable, because TREATAS is not a filter modifier. The first argument must be a table expression.

The TREATAS function works in Excel 2016 since version 1809. However, the function is not reported by IntelliSense and it might be not supported in Excel by Microsoft, yet.

Related articles

Learn more about TREATAS in the following articles:

  • Propagating filters using TREATAS in DAX

    This article describes how to create a virtual relationship in DAX using the TREATAS function, which is more efficient than approaches based on INTERSECT or FILTER. » Read more

  • Understanding the data lineage in DAX

    Data lineage is a DAX feature so well-implemented that most developers use it without knowing about its existence. This article describes the data lineage and how it can help producing better DAX code. » Read more

  • Physical and Virtual Relationships in DAX

    DAX calculations can leverage relationships present in the data model, but you can obtain the same result without physical relationships, applying equivalent filters using specific DAX patterns. This article show a more efficient technique to apply virtual relationships in DAX expressions. » Read more

Related functions

Other related functions are:

Last update: Oct 15, 2019   » Contribute   » Show contributors

Contributors: Alberto Ferrari, Marco Russo, Ed Hansberry

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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