berkaysynnada opened a new issue, #8075: URL: https://github.com/apache/arrow-datafusion/issues/8075
### Is your feature request related to a problem or challenge? While implementing [that projection pushdown rule](https://github.com/apache/arrow-datafusion/pull/8073), a case caught my attention. In some cases, projection and file readers (such as CsvExec) can be positioned sequentially, and the sole function of the Projection is to assign aliases. In these cases, couldn't this task be handled by the readers? They can perform projections internally, and if they could also define aliases, it would simplify such plans. ### Describe the solution you'd like While trying to eliminate projections after readers, if the projection makes aliasing, that new name can be used in the reader schema and other related outputs. The only exception is an evaluation in the projection, which cannot be operated during the read operation. ### Describe alternatives you've considered _No response_ ### Additional context _No response_ -- 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]
