[jira] [Assigned] (SPARK-42360) Transform LeftOuter join with IsNull filter on right side to Anti join

["Apache Spark (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/SPARK-42360?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Apache Spark reassigned SPARK-42360:
------------------------------------

    Assignee: Apache Spark

> Transform LeftOuter join with IsNull filter on right side to Anti join
> ----------------------------------------------------------------------
>
>                 Key: SPARK-42360
>                 URL: https://issues.apache.org/jira/browse/SPARK-42360
>             Project: Spark
>          Issue Type: Improvement
>          Components: SQL
>    Affects Versions: 3.3.1
>            Reporter: Wan Kun
>            Assignee: Apache Spark
>            Priority: Minor
>
> Optimize left outer join to anti join if exists IsNull filter on the right side.
> For example,  query
> {code:sql}
> SELECT t1.*
> FROM t1 LEFT JOIN t2
> ON t1.id = t2.id
> WHERE t2.id is null and t1.id = 1 and Rand() < 0.5
> {code}
> can be optimized to 
> {code:sql}
> SELECT t1.*
> FROM t1 LEFT ANTI JOIN t2
> ON t1.id = t2.id
> WHERE t1.id = 1 and Rand() < 0.5
> {code}



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