FrancescoCastaldi commented on issue #45082: URL: https://github.com/apache/superset/issues/45082#issuecomment-6524028984
### Root Cause Analysis & Solution In `superset/utils/pandas_postprocessing/rename.py`, renaming columns using a mapping where a target column name already exists in the DataFrame results in duplicate column labels. Downstream post-processing operations and dataframe serialization fail when duplicate column names are present with ambiguous index errors. #### Solution When `inplace=False`, ensure target column collisions are safely resolved by dropping or deduplicating preexisting columns prior to renaming, preserving DataFrame schema consistency. Verified with unit tests and committed to branch `fix/community-unanswered-issues` (commit `667706e6be0`) at https://github.com/FrancescoCastaldi/superset/tree/fix/community-unanswered-issues. -- 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]
