Forum Discussion

Navsharma's avatar
Navsharma
Frequent Visitor
2 years ago

Direct Query in Report builder

We have a paginated report that pulls that using direct query. In the dataset, I passed the hard coded values to filter the data. It's working fine at execute the DAX to pull the filtered dataset. Bu...
Paginedreport
johnbasha33's avatar
johnbasha33
Super User
2 years ago

Navsharma 

In Power BI, when using DirectQuery mode, the filtering behavior depends on various factors, including the data source, the way filters are applied in the dataset, and how the data model is structured. Here's what you need to consider:

  1. DirectQuery Limitations: DirectQuery mode retrieves data directly from the underlying data source (e.g., SQL Server, Analysis Services) in real-time, based on the user's interactions with the report. However, DirectQuery has some limitations compared to Import mode, particularly in terms of performance optimization and certain query capabilities.

  2. Query Folding: Query folding is a feature in Power Query that helps optimize query performance by pushing filter and transformation operations back to the data source whenever possible. However, not all operations can be folded back to the data source, especially if they involve complex transformations or custom DAX expressions.

  3. Filtering Behavior: When you apply filters in your dataset using DAX expressions, Power BI attempts to optimize the query and push the filter operation to the data source. However, if the data source does not support certain types of filtering or if the query cannot be folded back to the data source, Power BI may retrieve the full dataset and apply the filter locally.

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