Dandandan opened a new issue, #13243: URL: https://github.com/apache/datafusion/issues/13243
### Is your feature request related to a problem or challenge? From https://www.vldb.org/pvldb/vol4/p843-moerkotte.pdf A group join will use a single table from the hash join for executing a join followed by a group by on the same columns. An example query from the paper introduction ``` select a,count(*) from R1 left outer join R2 on R1.a = R2.b where R1.c=5 group by a ``` ### Describe the solution you'd like Implement group join in execution and in the (logical) planner. ### Describe alternatives you've considered _No response_ ### Additional context _No response_ -- 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.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
