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setis's avatar
setis
Icon for Post Partisan rankPost Partisan
5 years ago
Solved

Question about incremental refresh (happening in the DataFlow but not in the report)

Dear all, 

 

I have a large table of 50M+ rows in a DataFlow with incremental refresh working. The DataFlow update takes a couple of minutes. 

 

When I import this table from the dataflow into my report and I right click on the last stem, I can see that the "View Native Query" is greyed out. As far as I understand, this might that query folding might not be happening. 

 

After filtering this table using my RangeStart and RangeEnd parameters, I activate the incremental refresh on the table (keep 2 years, update 5 days), but the report update in the server, after the first load, takes a couple of hours every time. So I guess that incremental refresh is not happening in the report update. 

 

Am I missing anything?

 

Thanks in advance

Need Help

4 Replies

  • Anonymous's avatar
    Anonymous
    Not applicable
    5 years ago

    Hi setis ,

     

    Power Query loads only data specified between the RangeStart and RangeEnd parameters. Depending on the amount of data in that period, load should go quickly. If it seems slow and process intensive, it's likely the query is not folding.

     

    Best Regards,

    Stephen Tao

     

    If this post helps, then please consider Accept it as the solution to help the other members find it more quickly.

    • setis's avatar
      setis
      Icon for Post Partisan rankPost Partisan
      5 years ago

      Anonymous thanks, but can the folding happen when the source is a PBI DataFlow?

       

      The folding is happening in the DataFlow (it's refreshed in minutes), but when the report is refreshed it take a couple of hours.  

      • Anonymous's avatar
        Anonymous
        Not applicable
        5 years ago

        Hi setis ,

         

        Power BI Query Editor cant use Query Folding at all.

        Reference: Power BI Dataflows, Computed Entities and Query Folding

         

        Best Regards,

        Stephen Tao

         

        If this post helps, then please consider Accept it as the solution to help the other members find it more quickly.