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# Power Pivot Principles: MAXX

23 April 2019

Welcome back to our Power Pivot blog.  Today, we discuss how to use the MAXX function.

The MAXX function evaluates an expression for each row in a table and returns the largest numeric value as a decimal number.  The syntax of this function is:

MAXX ( <table> , <expression> )

This means it is useful when you are trying to avoid creating an additional column in a Table to calculate the interim calculations.

For our example, let’s look at the following Table:

To demonstrate, let’s create a measure using the MAXX function to calculate the greatest amount spent on apples. The expression here is a simple multiplication of ‘Apple Sales’[Price] and ‘Apple Sales’[Purchase Volume]:

=MAXX(

'Apple Sales',

'Apple Sales'[Price]*'Apple Sales'[Purchase Volume]

)

In other words, for each row, it is calculating the product of the price and the purchase volume, and then deducing which row creates the highest multiplicative total – all without having to create an extra column for the interim calculation.

Exporting this to a PivotTable we shall see…:

The greatest amount spent on apples is \$690.00.

If we drag in the Customer field into the ‘Rows’ area of the Pivot Table:

We can see that Frank spent the most on apples.

That’s it for this week, tune in next week for more on the MAXX function. Happy Pivoting!

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