kosiew commented on issue #7607: URL: https://github.com/apache/arrow-rs/issues/7607#issuecomment-2943269594
@tustvold Thanks for your speedy response! This behavior does not align with intuitive expectations — especially in analytics contexts like DataFusion or SQL engines, where “null” is understood in terms of value semantics, not bitmap position. For example: ```sql SELECT COUNT(DISTINCT dict) FROM ... ``` In SQL: NULL means the actual value is unknown. A dictionary index pointing to a null value should still be NULL. So from a user’s perspective, this feels like a bug, even though it’s spec-compliant. -- 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]
