korowa commented on issue #12075: URL: https://github.com/apache/datafusion/issues/12075#issuecomment-2308777855
There are already aggregation variants of first/last which seem to solve the issue ([example](https://github.com/apache/datafusion/blob/main/datafusion/sqllogictest/test_files/aggregate.slt#L170)), and, at first glance, they should not perform normal sorting, only compare incoming ordering column values with "accumulated" ones. It also seems that their performance could be improved by implementing GroupsAccumulator for them (or for majority of input types at least), as their state is somehow similar to AVGs state in terms of comlexity. -- 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...@datafusion.apache.org For queries about this service, please contact Infrastructure at: us...@infra.apache.org --------------------------------------------------------------------- To unsubscribe, e-mail: github-unsubscr...@datafusion.apache.org For additional commands, e-mail: github-h...@datafusion.apache.org
