Hi, @Anonymous
According to your description, you can try @Uzi2019 method and if it doesn't work, you can try the following methods to solve your problem.
1. Check the query and data source configuration to ensure that the queries used to merge tables and add columns do not contain any syntax errors or unsupported operations.
2. If the query is complex, consider optimising it for better performance.
Understand and optimize dataflows refresh - Power BI | Microsoft Learn
3. If the table is large, consider implementing an incremental refresh strategy for the data stream.
Using incremental refresh with dataflows - Power Query | Microsoft Learn
4. Refreshing and applying it in the query editor first. Later click the close option and move to the dashboard.
Solved: Re: OLE DB or ODBC error: [DataSource.Error] MySQL... - Page 2 - Microsoft Fabric Community
Best Regards,
Yang
Community Support Team
If there is any post helps, then please consider Accept it as the solution to help the other members find it more quickly.
If I misunderstand your needs or you still have problems on it, please feel free to let us know. Thanks a lot!
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