Dandandan commented on issue #6892: URL: https://github.com/apache/arrow-datafusion/issues/6892#issuecomment-1634966658
Based on the experiment I think the only way to do this reliable enough during planning is to have cardinality statistics on the group by columns, so the cardinality of the aggregation can be estimated. -- 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 For queries about this service, please contact Infrastructure at: us...@infra.apache.org
