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NATURALLEFTOUTERJOIN DAX Function (Table manipulation)

Joins the Left table with right table using the Left Outer Join semantics.


NATURALLEFTOUTERJOIN ( <LeftTable>, <RightTable> )
Parameter Attributes Description

The Left-side table expression to be used for join.


The Right-side table expression to be used for join.

Return values

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

A table which includes only rows from RightTable for which the values in the common columns specified are also present in LeftTable. The table returned will have the common columns from the left table and the other columns from both the tables.


There is no sort order guarantee for the results.
Columns being joined on must have the same data type and the same name in both tables.
The columns used in the join condition that correspond to physical columns of the data model must also have the same data lineage; two columns with the same name and different data lineage generate an error.
Strict comparison semantics are used during join. There is no type coercion; for example, 1 does not equal 1.0.

Related articles

Learn more about NATURALLEFTOUTERJOIN in the following articles:

Last update: Oct 19, 2020   » Contribute   » Show contributors

Contributors: Alberto Ferrari, Marco Russo

MSDN documentation:

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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