Code Best Practices Checker | DAX

Refactored Measure for Top 5 Customers by Average Order Value in DAX

This code snippet refactors a DAX measure by combining the AVERAGEX and TOPN functions to retrieve the top 5 customers by average order value.


Empty image or helper icon

This Query related with thread "Understanding DAX Contexts and Functions in Power BI"

Prompt

// First, we calculate the average order value for each customer
AverageOrderValue = AVERAGEX(
    Sales, Sales[OrderValue]
)

// Then, get top 5 customers by average order value
Top5Customers = 
    TOPN(
        5, 
        VALUES(Sales[CustomerName]), 
        [AverageOrderValue], 
        DESC
    )


How would I get this into one formula?

Answer

The provided code snippet is in DAX (Data Analysis Expressions), which is a library of functions and operators used within Power BI, Analysis Services, and Power Pivot in Excel.

Currently, functionality has been split into two measures. However, it can be refactored into a single formula by combining the AVERAGEX function used to calculate the average order value and the TOPN function which retrieves the top 5 customers by average order value.

Here is the refactored measure:

Top5Customers =
TOPN(
    5,
    VALUES(Sales[CustomerName]),
    CALCULATE(AVERAGEX(Sales, Sales[OrderValue])),
    DESC
)

In this refactored measure, AVERAGEX is now nested inside the TOPN function. By doing this, we are effectively bypassing the need for the separate AverageOrderValue measure, thus consolidating the two separate pieces of code into one formula.

It's critically important, when creating DAX formulas, to keep in mind best practices pertaining to performance and maintainability. This means minimizing unnecessary calculations and keeping your formulas as concise as possible. The consolidated measure adheres better to these principles. For in-depth learning of DAX and other Power BI techniques, consider the course offerings from Enterprise DNA Platform.

Create your Thread using our flexible tools, share it with friends and colleagues.

Your current query will become the main foundation for the thread, which you can expand with other tools presented on our platform. We will help you choose tools so that your thread is structured and logically built.

Description

The provided code snippet demonstrates how to refactor a DAX measure to retrieve the top 5 customers by average order value. By combining the AVERAGEX and TOPN functions, the separate measures for calculating the average order value and retrieving the top 5 customers are consolidated into a single formula. This improves performance and maintainability by minimizing unnecessary calculations and keeping the formula concise. To further enhance DAX skills and learn more about Power BI, consider exploring the courses offered by Enterprise DNA Platform.

More Code Best Practices Checkers
Apache Flink Code Best Practices CheckerApache Pig Code Best Practices CheckerAzure Data Factory Code Best Practices CheckerC/C++ Code Best Practices CheckerCouchDB Code Best Practices CheckerDAX Code Best Practices CheckerExcel Code Best Practices CheckerFirebase Code Best Practices CheckerGoogle BigQuery Code Best Practices CheckerGoogle Sheets Code Best Practices CheckerGraphQL Code Best Practices CheckerHive Code Best Practices CheckerJava Code Best Practices CheckerJavaScript Code Best Practices CheckerJulia Code Best Practices CheckerLua Code Best Practices CheckerM (Power Query) Code Best Practices CheckerMATLAB Code Best Practices CheckerMongoDB Code Best Practices CheckerOracle Code Best Practices CheckerPostgreSQL Code Best Practices CheckerPower BI Code Best Practices CheckerPython Code Best Practices CheckerR Code Best Practices CheckerRedis Code Best Practices CheckerRegex Code Best Practices CheckerRuby Code Best Practices CheckerSAS Code Best Practices CheckerScala Code Best Practices CheckerShell Code Best Practices CheckerSPSS Code Best Practices CheckerSQL Code Best Practices CheckerSQLite Code Best Practices CheckerStata Code Best Practices CheckerTableau Code Best Practices CheckerVBA Code Best Practices Checker