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I'm linking Power BI Desktop to a MySQL database (10 tables), and when I refresh the first time, I get: "An error happened while reading data from the provider: 'Input string was not in a correct format.'"
When I refresh the second time I get: "OLE DB or ODBC error: [DataSource.Error] An error happened while reading data from the provider: 'Input string was not in a correct format.'."
When I refresh a third time, it loads all the tables just fine, and successfully completes.
Is Bill Gates sitting at a terminal, counting how many times I try to load, and saying "three's a charm"?
I don't think any of my strings are in the wrong format, but even if they were, I would expect the software to continually fail, rather than to let me in eventually.
What's going on here?
If you have a Pro license you can open a Pro ticket at https://admin.powerplatform.microsoft.com/newsupportticket/powerbi
Otherwise you can raise an issue at https://community.fabric.microsoft.com/t5/Issues/idb-p/Issues .
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