sergiimk commented on issue #6463: URL: https://github.com/apache/arrow-datafusion/issues/6463#issuecomment-1567599415
Note: I was trying to use `COALESCE(nullable_column, 'unknown')` to try to unify nullability of tables before `UNION` but looks like Datafusion does not pick up on the fact that this expression can never produce `NULL`, so the resulting field is still nullable. -- 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]
