# TREATAS

Applies the result of a table expression as filters to columns from an unrelated table.

## Syntax

TREATAS(table_expression, <column>[, <column>[, <column>[,…]]]} )


### Parameters

Term Definition
table_expression An expression that results in a table.
column One or more existing columns. It cannot be an expression.

## Return value

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

## Remarks

• The number of columns specified must match the number of columns in the table expression and be in the same order.

• If a value returned in the table expression does not exist in the column, it is ignored. For example, TREATAS({"Red", "Green", "Yellow"}, DimProduct[Color]) sets a filter on column DimProduct[Color] with three values "Red", "Green", and "Yellow". If "Yellow" does not exist in DimProduct[Color], the effective filter values would are "Red" and "Green".

• Best for use when a relationship does not exist between the tables. If you have multiple relationships between the tables involved, consider using USERELATIONSHIP instead.

• This function is not supported for use in DirectQuery mode when used in calculated columns or row-level security (RLS) rules.

## Example

In the following example, the model contains two unrelated product tables. If a user applies a filter to DimProduct1[ProductCategory] selecting Bikes, Seats, Tires, the same filter, Bikes, Seats, Tires is applied to DimProduct2[ProductCategory].

CALCULATE(
SUM(Sales[Amount]),
TREATAS(VALUES(DimProduct1[ProductCategory]), DimProduct2[ProductCategory])
)