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
debiagui
Resolver I
Resolver I

Data Source Error : DataSource.Error: Microsoft SQL: Error converting data type varchar to bigint

Hi we're creating a dataflow connected to a MySql server using a personal Gateway.

In this dataflow we have two primary tables, one transactional (also with an incremental refresh) and one for master data.

We like to create a merged new table with the combination between both tables, and in the new table perform some calculations.

Transactional Table columns:

TransactionalData.PNG

Master Data table columns:

Md.PNG

The New table will include a multiplication of Transactional Valor (only 0 or 1) and MD Valor (a number range between 0 and 1)

But after save my dataflow I've the error:

Data Source Error : DataSource.Error: Microsoft SQL: Error converting data type varchar to bigint.-

Any ideas about it?

1 ACCEPTED SOLUTION
debiagui
Resolver I
Resolver I

Dismiss it, one of the data inside of the MatrizKey was malformed as numeric, but the Query syntax not show the error, and the column qualilty also not show the bad format.-

View solution in original post

1 REPLY 1
debiagui
Resolver I
Resolver I

Dismiss it, one of the data inside of the MatrizKey was malformed as numeric, but the Query syntax not show the error, and the column qualilty also not show the bad format.-

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.