Skip to main content
cancel
Turn on suggestions
Auto-suggest helps you quickly narrow down your search results by suggesting possible matches as you type.
Showing results for 
Search instead for 
Did you mean: 

Grow your Fabric skills and prepare for the DP-600 certification exam by completing the latest Microsoft Fabric challenge.

Reply
Alirezam
Helper V
Helper V

Extremely slow query when processing a query

‎05-18-2021 06:08 PM

Hi,

I am reading multiple folders and process some xml. files in the power query editor. After adding a 'column' to calculate something, it is now taking few hours to load the query and apply the new steps. It is weird that as shown below, it looks like it is reading a massive file with over 1 GB but my data source is not bigger than 200 MB. Any idea would be appreciated.

 

Capture.PNG

 

 

 

Labels:
Message 1 of 3
592 Views
0
2 REPLIES 2
mahoneypat
Employee
Employee

‎05-18-2021 06:12 PM

Please see this video and article.  You are going to want to use Table.Buffer to avoid reloading your source data repeatedly.

(5) Inside Power Query reference queries for Power BI and Excel - YouTube

Power Query M Primer (Part 12): Tables—Table Think I | Ben Gribaudo

 

Pat

 





Did I answer your question? Mark my post as a solution! Kudos are also appreciated!

To learn more about Power BI, follow me on Twitter or subscribe on YouTube.


@mahoneypa HoosierBI on YouTube


Message 2 of 3
581 Views
Alirezam
Helper V
Helper V
In response to mahoneypat

‎05-19-2021 05:16 PM

Thanks, it was helpful however did not solve my issue with slowness.

Message 3 of 3
496 Views
0

Helpful resources

Announcements
RTI Forums Carousel3

New forum boards available in Real-Time Intelligence.

Ask questions in Eventhouse and KQL, Eventstream, and Reflex.

MayPowerBICarousel1

Power BI Monthly Update - May 2024

Check out the May 2024 Power BI update to learn about new features.

View All