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

A new Data Days event is coming soon! This time we’re going bigger than ever. Fabric, Power BI, SQL, AI and more. Don't miss out.

Reply
DataGuy2016
Advocate IV
Advocate IV

Stop Data Validation when merging tables

Hi Folks,

 

I am extracting data from Teradata and it is a very time consuming download, taking around 8 hours.

 

Everytime I perform a table merge, BI goes back to the source data and validates it all again.  This appears unnecessary and is threatening my delivery.

 

Is there any way to stop the data validation step when merging tables please?

 

Thanks

 

1 ACCEPTED SOLUTION
v-sihou-msft
Microsoft Employee
Microsoft Employee

@DataGuy2016

 

Currently, it's not possible to stop the data validation when doing sturcture change on dataset. If those tables you want to merge are from same database, you can consider using Direct Query mode it will not reopen connection to source database.

 

Regards,

View solution in original post

1 REPLY 1
v-sihou-msft
Microsoft Employee
Microsoft Employee

@DataGuy2016

 

Currently, it's not possible to stop the data validation when doing sturcture change on dataset. If those tables you want to merge are from same database, you can consider using Direct Query mode it will not reopen connection to source database.

 

Regards,

Helpful resources

Announcements
May Power BI Update Carousel

Power BI Monthly Update - May 2026

Check out the May 2026 Power BI update to learn about new features.

Fabric SQL PBI Data Days

Data Days 2026 coming soon!

Sign up to receive a private message when registration opens and key events begin.

New to Fabric survey Carousel

New to Fabric Survey

If you have recently started exploring Fabric, we'd love to hear how it's going. Your feedback can help with product improvements.

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.