jackwener commented on PR #4620: URL: https://github.com/apache/arrow-datafusion/pull/4620#issuecomment-1361021583
In general, most JoinReorder Algorithm tolerate Cross Product. like DPSub. TiDB write a note about DPSub vs DPCcp. https://github.com/pingcap/tidb/blob/master/docs/design/2018-10-20-join-reorder-dp-v1.md `GPORCA` is optimizer of `Greenplum` and `Apache HAWQ`. implement DPSub. https://github.com/greenplum-db/gporca/blob/main/libgpopt/src/xforms/CJoinOrderDPv2.cpp -- 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]
