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

Join us for an expert-led overview of the tools and concepts you'll need to become a Certified Power BI Data Analyst and pass exam PL-300. Register now.

Reply
Denis_Slav
Helper III
Helper III

Crate table from List of unic values from column without upload source table

Hi all. 

I have several huge source table (>20 GB) , and I need to create new table with unic values from [Column 1]. 

I create new query with List.Combine(Table1[Column1], Table2[Column1]) and several transformation. After Apply changes, PBI upload source tables several times: for main data and for created lists. 

 

Is it possible to reduce number of uploads source tables?

 

As a source of raw tables I use dataflows. 

1 ACCEPTED SOLUTION
amitchandak
Super User
Super User

@Denis_Slav , Can you try this DAX and see if saves time.

 

distinct(union (all(Table1[Column1]), all(Table2[Column1])))

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

View solution in original post

4 REPLIES 4
amitchandak
Super User
Super User

@Denis_Slav , Can you try this DAX and see if saves time.

 

distinct(union (all(Table1[Column1]), all(Table2[Column1])))

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

Thanks. Didn't think in this direction. )

But in that case I have no possibility to transform data. (

@Denis_Slav , yes, but Power query kind of works on the complete table. so once you are done with all data modeling you can try this.

 

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

@amitchandak Ok. Thank you. I will try. 

Helpful resources

Announcements
Join our Fabric User Panel

Join our Fabric User Panel

This is your chance to engage directly with the engineering team behind Fabric and Power BI. Share your experiences and shape the future.

June 2025 Power BI Update Carousel

Power BI Monthly Update - June 2025

Check out the June 2025 Power BI update to learn about new features.

June 2025 community update carousel

Fabric Community Update - June 2025

Find out what's new and trending in the Fabric community.