dosubot[bot] commented on issue #30892: URL: https://github.com/apache/superset/issues/30892#issuecomment-2467755288
<!-- Answer --> There is a known issue with cross-database queries in Superset, particularly when using the Superset meta database, which can lead to `GENERIC_DB_ENGINE_ERROR` errors. This error typically occurs when the database returns an unexpected error, and it is associated with error code `1002` <sup>[[1]](https://github.com/apache/superset/blob/master/superset/errors.py)</sup>. Some potential causes for this error when querying MySQL tables include: 1. **Connection Errors**: Ensure that the connection details (username, password, host, database name) are correct. Common issues include access denied errors, unknown host, or the database being unreachable <sup>[[2]](https://github.com/apache/superset/blob/master/superset/db_engine_specs/mysql.py)</sup>. 2. **Syntax Errors**: Check for any syntax errors in the SQL query. The error message might indicate where the syntax issue is located <sup>[[2]](https://github.com/apache/superset/blob/master/superset/db_engine_specs/mysql.py)</sup>. 3. **URI Query Parameters**: Certain URI query parameters are disallowed for security reasons, such as `local_infile` for `mysqldb` and `allow_local_infile` for `mysqlconnector`. Ensure these are set to `0` <sup>[[2]](https://github.com/apache/superset/blob/master/superset/db_engine_specs/mysql.py)</sup>. Additionally, the Superset meta database has some limitations and considerations, such as security concerns, performance issues, and row limitations, which might affect cross-database queries <sup>[[3]](https://github.com/apache/superset/blob/master/docs/docs/configuration/databases.mdx)</sup>. Review these aspects to diagnose and resolve the issue. If the problem persists, further investigation into the specific error messages and database logs may be necessary. <!-- Dosu Comment Footer --> *To continue talking to [Dosu](https://dosu.dev), mention @dosu.* -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected] --------------------------------------------------------------------- To unsubscribe, e-mail: [email protected] For additional commands, e-mail: [email protected]
