How to Extract the DAX Query from a Dataset in Power BI Paginated Reports 

Paginated reports in Power BI Report Builder are ideal for generating pixel-perfect, printable reports. When these reports are connected to Power BI datasets, the underlying data retrieval is handled using DAX (Data Analysis Expressions)—the same language used in Power BI Desktop. However, the DAX query behind a dataset is not always visible by default. 

Extracting the DAX query can be critical for debugging, optimizing performance, or simply understanding how the report fetches its data. This guide provides step-by-step instructions for retrieving the DAX query from a dataset in Power BI Report Builder and introduces an alternative method using Power BI Desktop’s Performance Analyzer. 

Benefits of Viewing the DAX Query 

Accessing the underlying DAX query provides several advantages: 

• Performance Troubleshooting: Identify expensive operations and bottlenecks that may slow down the report. 

• Data Validation: Ensure the dataset logic aligns with your business rules and reporting requirements. 

• Reusability: Reuse or repurpose the DAX in Power BI Desktop or for API testing. 

• Optimization: Refine and improve queries for better execution and report responsiveness. 

Steps to Extract the DAX Query from a Dataset 

1. Open Power BI Report Builder

Launch Power BI Report Builder and open the .rdl file that contains your paginated report. 

2. Find the Dataset

In the Report Data pane: 

• Expand the Datasets folder. 

• Locate the dataset that is connected to the Power BI semantic model (also referred to as a Power BI dataset). 

3. Open the Dataset Query

• Right-click the dataset and select Query. 

• This opens the Query Designer or Dataset Properties dialog. 

• For Power BI datasets, the query is executed using DAX, even if it appears abstracted. 

4. View and Copy the DAX Query

• In the Dataset Properties window, click the fx (Expression Editor) button next to the Query or Command Text field. 

• Inside the Expression Editor, the DAX query will be displayed. 

• Copy this query for use in debugging, validation, or optimization. 

Alternative: Use Performance Analyzer in Power BI Desktop 

If the paginated report is based on an existing Power BI report, or if there’s a need to observe the DAX query executed by a visual, the Performance Analyzer in Power BI Desktop is a valuable tool. 

Steps: 

1. Open the report in Power BI Desktop. 

1. Go to the View tab and enable Performance Analyzer. 

1. Click Start Recording and then interact with the visual of interest. 

1. Once loaded, click Copy Query next to the visual. 

1. Paste the DAX query into DAX Studio or another editor for inspection. 

Final Thoughts 

Extracting and analyzing DAX queries from Power BI paginated reports is a vital skill for ensuring accurate data output, improving report performance, and troubleshooting complex report logic. Whether you’re a report developer, data analyst, or BI administrator, understanding how to access and interpret DAX queries can greatly enhance reporting efficiency and data clarity. 

For expert assistance with Power BI paginated reports, DAX optimization, or report performance tuning, consider reaching out to our team of specialists. We provide end-to-end Power BI consulting services to help ensure your reports are fast, accurate, and business-ready.
Connect with us today to streamline your reporting environment and unlock the full potential of Power BI.