rtpsw opened a new issue, #35004: URL: https://github.com/apache/arrow/issues/35004
### Describe the enhancement requested Currently, there is a `RelationInfo` class in Acero whose purpose beyond that of `DeclarationInfo` is to specify the translation of an output mapping from input indices to output indices. However, [Substrait column selection and emit documentation](https://substrait.io/tutorial/sql_to_substrait/#column-selection-and-emit) says the output mapping is already specified in terms of output indices. ### Component(s) C++ -- 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]
