mingmwang opened a new issue, #4641: URL: https://github.com/apache/arrow-datafusion/issues/4641
**Is your feature request related to a problem or challenge? Please describe what you are trying to do.** A clear and concise description of what the problem is. Ex. I'm always frustrated when [...] (This section helps Arrow developers understand the context and *why* for this feature, in addition to the *what*) DataFusion's current implement only checks the length of the sort exprs, and does not consider the column indexes, sort options(`Asc`/`Desc` and `Nulls First`/`Nulls Last`). The current implement claims to align with PG's rule but actually are not exactly matching. See PG's source code `select_active_windows` and `common_prefix_cmp` https://github.com/postgres/postgres/blob/master/src/backend/optimizer/plan/planner.c **Describe the solution you'd like** A clear and concise description of what you want to happen. **Describe alternatives you've considered** A clear and concise description of any alternative solutions or features you've considered. **Additional context** Add any other context or screenshots about the feature request here. -- 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: github-unsubscr...@arrow.apache.org.apache.org For queries about this service, please contact Infrastructure at: us...@infra.apache.org
