godfrey he created FLINK-12600:
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Summary: Introduce planner rules to do deterministic rewriting on
RelNode
Key: FLINK-12600
URL: https://issues.apache.org/jira/browse/FLINK-12600
Project: Flink
Issue Type: New Feature
Components: Table SQL / Planner
Reporter: godfrey he
Assignee: godfrey he
This issue aims to introduce planner rules to to do deterministic rewriting on
RelNode , rules include:
1. {{FlinkLimit0RemoveRule}} that rewrites `limit 0` to empty {{Values}}
2. {{FlinkRewriteSubQueryRule}} that rewrites a {{Filter}} with condition:
`(select count(*) from T) > 0` to a {{Filter}} with condition: `exists(select *
from T)`
3. {{ReplaceIntersectWithSemiJoinRule}} that rewrites distinct {{Intersect}} to
a distinct {{Aggregate}} on a SEMI {{Join}}.
4. {{ReplaceMinusWithAntiJoinRule}} that rewrite distinct {{Minus}} to a
distinct {{Aggregate}} on an ANTI {{Join}}.
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