ZhangHuiGui commented on issue #41094: URL: https://github.com/apache/arrow/issues/41094#issuecomment-2088002703
It would be very grateful if you move this forward. > This can't be done properly when `if_then_else`, `case_when`, `and`, `or` **are implemented as functions** like in Arrow currently. We need to create special expression fragments that can receive unevaluated expressions as input parameters. > > They would look like `compute::Expression::Call` that can receive `compute::Expression` instances as parameters [3]. The implementation method you mentioned is more elegant, and it basically does not affect the scheduling of the expression system of other functions. We could focus on the special cases in expression logic. And implement a scheduling framework so that relevant special functions can be Incremental pushed into this framework later. -- 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]
