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How To Efficiently Test and Validate Power BI Reports using DAX Query in Wiiisdom
Defining Power BI DAX Language
DAX stands for Data Analysis Expressions and is a special language that allows you to query your data in Power BI by creating custom calculations on your data. Think of it like SQL statements, but more powerful and tailored for data modeling. It’s a great tool for transforming and analyzing your data to gain deeper insights.
In our Analytics Governance solution for Power BI, you can now use DAX Query inside the pipelines to test and validate your reports. This article will demonstrate how that works in Wiiisdom Cloud Platform.
Use Power BI DAX Query in Wiiisdom Cloud Platform
Validating the quality of your Power BI reports using DAX Query is now possible with Wiiisdom. This new capability will ensure that insights derived from data are both accurate and trustworthy.
The 3 most common use cases for this new feature are:
1. Validate that data exists in a visual
I want to validate that my visual isn’t blank and the expected data is present.
2. Validate data in the visual
I want to make sure my results always have positive or negative values, or results are bigger than a defined value. For example, a KPI is between 0 and 1.
3. Validate measure aggregation
I define a measure and I want to be sure there are at least 1, 2, or 3 different levels of aggregation that are giving me values that make sense.
Wiiisdom Cloud Platform provides this feature for Row Count and Column Statistics, and thanks to the performance optimizer, DAX queries for visuals can easily be obtained and used in our product. For the more advanced DAX users, much more flexibility can be provided by allowing the creation of any DAX queries necessary for data validation. However, there’s no need to be a DAX expert, as with Copilot, you can generate the queries you need with ease.
When you create the step in Wiiisdom Cloud Platform, you will have the choice of whether you want to go with Simple Mode (a simple check of a current existing table) or DAX Mode.
Choose between Simple Mode or DAX mode when creating your pipeline.
Once you select DAX Mode, you will be able to enter any DAX Query. After your query is validated, you will be able to verify and test your data properly! Anything can be validated as long as you have a semantic model on Power BI services and you know how to write DAX Query, either through row count or column statistics.
N.B. The query evaluation works the same way as the DAX view on Power BI desktop.
To get a full product demo of this new feature, watch this video 👇
Want to see this in action?
This feature allows you to validate your visual, the data behind your visual, and your measure aggregation—DAX Query allows you to take Power BI to the next level. If you want to use these in your test pipelines, this is now possible in Wiiisdom Cloud Platform. To see this in action, get in touch today.
