[jira] [Closed] (FLINK-12509) Introduce planner rules about non semi/anti join

["Kurt Young (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/FLINK-12509?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Kurt Young closed FLINK-12509.
------------------------------
       Resolution: Implemented
    Fix Version/s: 1.9.0

merge in 1.9.0: b36c54dd06122b7ddf10048ca72f1b5e448b4cd2

> Introduce planner rules about non semi/anti join
> ------------------------------------------------
>
>                 Key: FLINK-12509
>                 URL: https://issues.apache.org/jira/browse/FLINK-12509
>             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 non semi/anti join, rules include:
> 1. {{JoinConditionEqualityTransferRule}}, that converts Join's conditions to the left or right table's own independent filter as much as possible, so that the rules of filter-push-down can push down the filter to below.
> 2. {{JoinConditionTypeCoerceRule}}, that coerces the both sides of EQUALS(`=`) operator in Join condition to the same type while sans nullability.
> 3. {{JoinDependentConditionPushDownRule}}, that extracts some sub-conditions in the Join OR condition that can be pushed into join inputs by {{FlinkFilterJoinRule}}.
> 4. {{JoinDeriveNullFilterRule}} filters null values before join if the count null value from join input
>   is greater than {{sql.optimizer.join.null.filter.threshold}}
> 5. {{SimplifyJoinConditionRule}}, that apply various simplifying transformations on join condition.
> planner rules about semi/anti join will be introduced in [FLINK-12519|https://issues.apache.org/jira/browse/FLINK-12519].



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