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windows-itpro-docs/windows/deployment/windows-autopilot/test/includes/7-4-dax-expressions.md
Greg Lindsay 5e780ecfa8 yaml lab04
2019-04-02 15:19:33 -07:00

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Using variables are an extremely powerful part of a DAX expression.

You can define a variable anywhere in a DAX expression, using the following syntax:

VARNAME = RETURNEDVALUE

Variables can be any data type, including entire tables.

Keep in mind that each time you reference a variable in your DAX expression, Power BI must recalculate its value according to your definition. For this reason, it's good practice to avoid repeating variables in your function.

Video content courtesy of Alberto Ferrari, SQLBI