Dax Query dependency & maintenance

[s0m0ffc]

Hi Team,

We are building an application to show KPIs that dependent on Dax queries. Each KPI in each report has specific dax query written and they are executed to get the values. As the number of reports & kpis increase it becomes difficult to maintain the dax queries. Is there an easier way to retrieve KPI values and reduce the maintenance of DAX queries ?

[danextian]

Hi @s0m0ffc 

Look into using:

• calculation groups to apply one or more logic to different aggregations. https://learn.microsoft.com/en-us/power-bi/transform-model/calculation-groups 
• reusing the same semantic model via a direct query connection

[123abc]

Maintaining numerous DAX queries for KPIs can indeed become challenging as your reports and KPIs grow. Here are some strategies to help simplify and optimize your DAX queries:

1. Reuse Measures: Instead of writing the same DAX code multiple times, create reusable measures. This not only reduces redundancy but also makes your DAX code easier to maintain.

2. Use Variables: Variables can help simplify your DAX expressions by storing intermediate results. This can make your code more readable and efficient.

3. Optimize DAX Functions: Use optimized DAX functions like SELECTEDVALUE() instead of HASONEVALUE() an...

4. Aggregation Tables: Create aggregation tables to pre-calculate and store summary data. This can significantly reduce the complexity and execution time of your DAX queries2.

5. DAX Formatter: Use tools like DAX Formatter to format your DAX code. Well-formatted code is easier to read and maintain.

6. Performance Analyzer: Utilize Power BI’s Performance Analyzer to identify and optimize slow-running queries. This tool can help you pinpoint bottlenecks and improve overall performance.

By implementing these best practices, you can streamline your DAX queries and make them more manageable as your application scales. If you need more detailed guidance, feel free to ask!