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https://issues.apache.org/jira/browse/FLINK-12524?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Kurt Young closed FLINK-12524.
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Resolution: Implemented
Fix Version/s: 1.9.0
merge in 1.9.0: e6f968c504ac323b8ae5da8a9545aae3ac69197c
> Introduce planner rules about rank
> ----------------------------------
>
> Key: FLINK-12524
> URL: https://issues.apache.org/jira/browse/FLINK-12524
> Project: Flink
> Issue Type: New Feature
> Components: Table SQL / Planner
> Reporter: godfrey he
> Assignee: godfrey he
> Priority: Major
> Labels: pull-request-available
> Fix For: 1.9.0
>
> Time Spent: 20m
> Remaining Estimate: 0h
>
> This issue aims to introduce planner rules about rank, rules include:
> 1. {{CalcRankTransposeRule}}, that transposes {{FlinkLogicalCalc}} past
> {{FlinkLogicalRank}}
> to reduce rank input fields.
> 2. {{RankNumberColumnRemoveRule}}, that emoves the output column of rank
> number iff there is a equality condition for the rank column.
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