Skip to main content
cancel
Showing results for 
Search instead for 
Did you mean: 

Try your skills in the Power BI Dataviz World Championship! Round one ends June 26. Join now

Reply
Anonymous
Not applicable

Slow Applying Query Changes

Hello,

 

I have a data model that contains 3 tables, 1 fact table and 2 dimension table. I have applied the basic relationship using one to many. I have filtered the needed requirements and columns as well. The thing is when i click close and apply, the apply query changes is taking too long to load the data. It's really slow like it would take 1-2 hours to finish loading the model for 1 table that i have changed.

 

Is there a way to speed up things? The data source is SQL (through OLEDB conection), 2 local excel files as reference.

 

Thanks for the help..

4 REPLIES 4
selimovd
Most Valuable Professional
Most Valuable Professional

Hey @Anonymous ,

 

can you check in your steps if query folding is happening?:

Query folding | Microsoft Docs

 

Maybe you put a step at the beginning that is breaking query folding and you could optimize that by putting these kind of steps at the end.

 

If you need any help please let me know.
If I answered your question I would be happy if you could mark my post as a solution ✔️ and give it a thumbs up 👍
 
Best regards
Denis
 
Anonymous
Not applicable

Not sure why you mean, but here is my steps

Laedays_0-1621328426686.png

 

amitchandak
Super User
Super User

@Anonymous , Try these setting in data load, under file-> options and setting -> Option -> report level

Settings for performace.png

Share with Power BI Enthusiasts: Full Power BI Video (20 Hours) YouTube
Microsoft Fabric Series 60+ Videos YouTube
Microsoft Fabric Hindi End to End YouTube
Anonymous
Not applicable

Hello, thanks for the tip. It did not give much of a difference. I have 128 columns in my main table. Is it because i have lots of columns that makes it slow to load the model? 

Helpful resources

Announcements
Fabric Data Days is here Carousel

Fabric Data Days 2026

Don't miss out on Data Days, June 15 through August 7. Learn Fabric, Power BI, SQL, AI and more.

Power BI DataViz World Championships carousel

Power BI DataViz World Championships - June 2026

A new Power BI DataViz World Championship is coming this June! Don't miss out on submitting your entry.