godfreyhe opened a new pull request #8460: [FLINK-12524] [table-planner-blink] Introduce planner rules about rank URL: https://github.com/apache/flink/pull/8460 ## What is the purpose of the change *Introduce planner rules about rank* ## Brief change log - *added CalcRankTransposeRule that transposes FlinkLogicalCalc past FlinkLogicalRank to reduce rank input fields* - *added RankNumberColumnRemoveRule that emoves the output column of rank number iff there is a equality condition for the rank column* ## Verifying this change This change added tests and can be verified as follows: - *Added CalcRankTransposeRuleTest that validates CalcRankTransposeRule* - *Added RankNumberColumnRemoveRuleTest that validates RankNumberColumnRemoveRule* ## Does this pull request potentially affect one of the following parts: - Dependencies (does it add or upgrade a dependency): (yes / **no**) - The public API, i.e., is any changed class annotated with `@Public(Evolving)`: (yes / **no**) - The serializers: (yes / **no** / don't know) - The runtime per-record code paths (performance sensitive): (yes / **no** / don't know) - Anything that affects deployment or recovery: JobManager (and its components), Checkpointing, Yarn/Mesos, ZooKeeper: (yes / **no** / don't know) - The S3 file system connector: (yes / **no** / don't know) ## Documentation - Does this pull request introduce a new feature? (yes / **no**) - If yes, how is the feature documented? (not applicable / docs / JavaDocs / **not documented**)
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