majiayu000 commented on issue #62506:
URL: https://github.com/apache/airflow/issues/62506#issuecomment-4056069960

   I've submitted PR #63530 to fix this issue.
   
   The fix changes `bulk_load_custom` to interpolate `duplicate_key_handling` 
and `extra_options` directly into the SQL statement via f-string, while keeping 
`tmp_file` as the sole parameterized value. This prevents MySQL drivers from 
quoting SQL keywords as string literals.
   
   All existing tests have been updated and a new parametrized test has been 
added to verify both `IGNORE` and `REPLACE` keywords work correctly.


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