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

The Power BI Data Visualization World Championships is back! Get ahead of the game and start preparing now! Learn more

Reply
Anonymous
Not applicable

Missing Data After Combine Files

Hi everyone,

I have one problem. I got data of in excel sheets for 2017 (Jan-Dec) & 2018 (Jan-Dec). So total Excel files are 24 files with the same column header (Date, Product Name, Amount). I did use the feature in Power Bi to combine all those files by using "Get Data >> Folder". After successfully combine all the data, I found that the data in column Amount for 2017 have gone missing but column Amount for 2018 has no problem. Meaning, in column header Amount year 2017, all stated "Null" which originally have their own values.

I did try combine files only for 2017 (12 files) and 2018 (12 files) separately, and it works. All the data were there. However when I try to combine all 24 files, it went missing.

My question is why does it happen? Is that because of the "Date" conflict that makes the values in Amount column for 2017 gone missing? Why Power Bi only take the data of later year (2018) but not both of year (2017 & 2018)  

2 REPLIES 2
v-piga-msft
Resident Rockstar
Resident Rockstar

Hi @Anonymous ,

Have you solved your problem?

If you have solved, please always accept the replies making sense as solution to your question so that people who may have the same question can get the solution directly.

If you still need help, feel free to ask.

Best  Regards,

Cherry

Community Support Team _ Cherry Gao
If this post helps, then please consider Accept it as the solution to help the other members find it more quickly.
v-piga-msft
Resident Rockstar
Resident Rockstar

Hi @Anonymous ,

By my tests, I cannot reproduce your issue by combining the files in power bi.

Normally, the issue should be caused by the different column headers.

Are you sure the column names are the same for the files?

If it is convenient, could you share the screeshots or the data sample so that we could have a test on it?

Best  Regards,

Cherry

Community Support Team _ Cherry Gao
If this post helps, then please consider Accept it as the solution to help the other members find it more quickly.

Helpful resources

Announcements
Power BI DataViz World Championships

Power BI Dataviz World Championships

The Power BI Data Visualization World Championships is back! Get ahead of the game and start preparing now!

December 2025 Power BI Update Carousel

Power BI Monthly Update - December 2025

Check out the December 2025 Power BI Holiday Recap!

FabCon Atlanta 2026 carousel

FabCon Atlanta 2026

Join us at FabCon Atlanta, March 16-20, for the ultimate Fabric, Power BI, AI and SQL community-led event. Save $200 with code FABCOMM.