godfrey he created FLINK-12937:
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Summary: Introduce join reorder planner rules in blink planner
Key: FLINK-12937
URL: https://issues.apache.org/jira/browse/FLINK-12937
Project: Flink
Issue Type: New Feature
Components: Table SQL / Planner
Reporter: godfrey he
Assignee: godfrey he
This issue aims to let blink planner support join reorder.
`LoptOptimizeJoinRule` in Calcite could meet our requirement for now, so we
could use directly this rule in blink planner. `JoinToMultiJoinRule` ,
`ProjectMultiJoinMergeRule` and `FilterMultiJoinMergeRule` should be also
introduced to support `LoptOptimizeJoinRule`.
additionally, we add a new rule named `RewriteMultiJoinConditionRule` which
could apply transitive closure on `MultiJoin` for equi-join predicates to
create more optimization possibilities.
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