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

To celebrate FabCon Vienna, we are offering 50% off select exams. Ends October 3rd. Request your discount now.

Reply
ChielFaber
Solution Supplier
Solution Supplier

Dataflow output different then preview

Hello everyone,

 

I'm experiencing a problem with my PowerBI dataflow output.

I've made an id-field in the dataflow and when I take a look at the last step (Result) it shows the created id-fields per row:

 

Dataflow screen.PNG

 

When I go ahead and save the dataflow and load this into a PowerBI desktop file not all the rows generate an output and I get blank rows. I've looked up this particular record (5470010100) as having a blank value as output despite showing in the preview. 

 

PowerBI dataset screen.PNG

 

Most values are showing but certain others aren't showing as well. I have two tables using this ID and in both the exact same values are missing.

 

Also when loading the dataflow output into a datamart the exact same values are missing.

 

Have any of you experienced the same problem and know a solution?

 

Regards,

 

Chiel

 


[Tip] Keep CALM and DAX on.
[Solved?] Hit “Accept as Solution” and leave a Kudos.
[About] Chiel | SuperUser (2023–2) |
1 ACCEPTED SOLUTION
Anonymous
Not applicable

Hi,

 

 I had a similar issue recently that turned out to be formatting further up the chain. A Date in Text format had been changed using the change type rather than a Date.FromText formula so although it displayed in the preview when loading to excel the cells were all blank.

 

Might be worth checking the source and all steps to see if the format has been chnaged incorrectly? (Maths on a number set as a Text field could cause the same issue I guess??).

 

Hope that helps

View solution in original post

2 REPLIES 2
ChielFaber
Solution Supplier
Solution Supplier

Thanks James your line of thought solved the problem. Much appreciated


[Tip] Keep CALM and DAX on.
[Solved?] Hit “Accept as Solution” and leave a Kudos.
[About] Chiel | SuperUser (2023–2) |
Anonymous
Not applicable

Hi,

 

 I had a similar issue recently that turned out to be formatting further up the chain. A Date in Text format had been changed using the change type rather than a Date.FromText formula so although it displayed in the preview when loading to excel the cells were all blank.

 

Might be worth checking the source and all steps to see if the format has been chnaged incorrectly? (Maths on a number set as a Text field could cause the same issue I guess??).

 

Hope that helps

Helpful resources

Announcements
September Power BI Update Carousel

Power BI Monthly Update - September 2025

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

August 2025 community update carousel

Fabric Community Update - August 2025

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

Top Kudoed Authors