[jira] [Commented] (FLINK-14724) Join condition could be simplified in logical phase

["godfrey he (Jira)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/FLINK-14724?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16972350#comment-16972350 ] 

godfrey he commented on FLINK-14724:
------------------------------------

I would like to take this ticket

> Join condition could be simplified in logical phase
> ---------------------------------------------------
>
>                 Key: FLINK-14724
>                 URL: https://issues.apache.org/jira/browse/FLINK-14724
>             Project: Flink
>          Issue Type: Sub-task
>          Components: Table SQL / Planner
>    Affects Versions: 1.9.0, 1.9.1
>            Reporter: godfrey he
>            Priority: Major
>             Fix For: 1.10.0
>
>
> currently the plan of tpcds q38.sql contains {{NestedLoopJoin}}, because it's join condition is {{CAST(AND(IS NOT DISTINCT FROM($2, $3), IS NOT DISTINCT FROM($1, $4), IS NOT DISTINCT FROM($0, $5))):BOOLEAN}}, and planner can't find equal join keys from the condition by {{Join#analyzeCondition}}.
> {{SimplifyJoinConditionRule}} could solve this.



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