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

Be one of the first to start using Fabric Databases. View on-demand sessions with database experts and the Microsoft product team to learn just how easy it is to get started. Watch now

Reply
ashicool_10061
Helper III
Helper III

Data Format Error

Hi There,

 

I am trying to do data transfromation in Power Query where i am merging my table using Merge as a new . I am using dataflows as my input source in which i have imported 7 tables and i am doing Merge Query to create new table.

I developed two new query using Merge Query and when i did Merge with one of my table "Table 1" with Table 2 i am getting below error when i expanded the column.

 

Please see below sample of my data :

 

L1.PNG

ashicool_10061_0-1732778126281.png

Data Source- DataFlows

 

Can anyone help me in resloving this error. ?

 

Thanks,

Ash

@amitchandak @Ashish_Mathur 

 

 

8 REPLIES 8
v-heq-msft
Community Support
Community Support

Hi @ashicool_10061 ,

According to your description, the error message “DataFormatError: There were more columns in the result than expected” is usually caused by a mismatch between the merged table structure and the expected format. First of all, you need to make sure that the column names and order in both tables match exactly. And verify that the data types of the columns to be merged are compatible. Because your data source is derived from a data stream, you also need to make sure that the structure (column names and data types) of each table imported in DataFlows matches the structure you expect in Power Query. You also need to have the data in DataFlows successfully refreshed and up-to-date for all tables.

 

Best regards,
Albert He


If this post helps, then please consider Accept it as the solution to help the other members find it more quickly

Hi @v-heq-msft ,

 

You mentioned all the column name and order in both table shoudl be similar however i am trying to do Merge as new querty with Left Outer join with Table 1 on Table 2 where i am keeping all the columns from Table 1 . As per my kunderstanding  in Append Query we should have Same column name and order will be same.
Secondly i have verified data format and my dataflow is being up to date and still i am facing this issue.

So i have changed my dataflow pervioulsy i was using different Dataflow-Dev and not i changed my DATAFLOW- test  which have exact same column and table names .

 

Any other suggestion if you have?

 

Thanks,

Ash

Omid_Motamedise
Resident Rockstar
Resident Rockstar

Can you share your M code here?

Hi @Omid_Motamedise 

 

Please see below :

 

 

 

Hi @ashicool_10061 ,

 

it is because of the fields with orange underline. 

Those are not present in the section inside the green section. Review it, remove them or add them in the green section and it will be solved.

mussaenda_0-1732880071599.png

 

Hi @mussaenda 

 

I tried the way you mentioned but still it not working. So i tried re creating the report from scratch and now as soon as i am loading the data into the report i am getting below error:

 

Test_Data.PNG

Can you help me in this 

 

Thanks,

Ash

Hi @ashicool_10061 , Please share the M Query code of your report from scratch
wini_R
Resolver IV
Resolver IV

Helpful resources

Announcements
Las Vegas 2025

Join us at the Microsoft Fabric Community Conference

March 31 - April 2, 2025, in Las Vegas, Nevada. Use code MSCUST for a $150 discount!

ArunFabCon

Microsoft Fabric Community Conference 2025

Arun Ulag shares exciting details about the Microsoft Fabric Conference 2025, which will be held in Las Vegas, NV.

December 2024

A Year in Review - December 2024

Find out what content was popular in the Fabric community during 2024.

Top Kudoed Authors