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https://issues.apache.org/jira/browse/FLINK-12610?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Kurt Young closed FLINK-12610.
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Resolution: Implemented
Fix Version/s: 1.9.0
merge in 1.9.0: 370e0cb427c2908677d9f32a1fcfd84cd77bb445
> Introduce planner rules about aggregate
> ---------------------------------------
>
> Key: FLINK-12610
> URL: https://issues.apache.org/jira/browse/FLINK-12610
> 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 aggregate, rules include:
> 1. {{AggregateCalcMergeRule}}, that recognizes {{Aggregate}} on top of a
> {{Calc}} and if possible aggregate through the calc or removes the calc
> 2. {{AggregateReduceGroupingRule}}, that reduces unless grouping columns
> 3. {{PruneAggregateCallRule}}, that removes unreferenced AggregateCall from
> Aggregate
> 4. {{FlinkAggregateRemoveRule}}, that is copied from Calcite's
> AggregateRemoveRule, and supports SUM, MIN, MAX, AUXILIARY_GROUP functions in
> non-empty group aggregate
> 5. {{FlinkAggregateJoinTransposeRule}}, that is copied from Calcite's
> AggregateJoinTransposeRule, and supports Left/Right outer join and aggregate
> with AUXILIARY_GROUP
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