westonpace commented on issue #36709: URL: https://github.com/apache/arrow/issues/36709#issuecomment-1642567738
> Using the current unordered hashmap implementation would be the same keys from the same group next to each other? so eg.: No. If the columns are keys then there will only be one output row for each combination of keys. So there is no concept of "keys from the same group". `select col, sum(x) from tbl group by 1` This is odd syntax to me. However, it looks to be the same as `select col, sum(x) from tbl group by col`. Either way I would expect the result would be: ``` C 6 A 6 B 6 ``` -- 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]
