Yunhong Zheng created FLINK-28599:
-------------------------------------
Summary: Adding FlinkJoinToMultiJoinRule to support left/right
outer join can be translated to multi join
Key: FLINK-28599
URL: https://issues.apache.org/jira/browse/FLINK-28599
Project: Flink
Issue Type: Improvement
Components: Table SQL / Planner
Affects Versions: 1.16.0
Reporter: Yunhong Zheng
Fix For: 1.16.0
Now, Flink use Calcite's rule
{code:java}
JOIN_TO_MULTI_JOIN{code}
to convert multiple joins into a join set, which can be used by join reorder.
However, calcite's rule can not adapte to all outer joins. For left or right
outer join, if they meet certain conditions, it can also be converted to multi
join.
--
This message was sent by Atlassian Jira
(v8.20.10#820010)
