[jira] [Assigned] (SPARK-42551) Support subexpression elimination in FilterExec

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

     [ https://issues.apache.org/jira/browse/SPARK-42551?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Apache Spark reassigned SPARK-42551:
------------------------------------

    Assignee:     (was: Apache Spark)

> Support subexpression elimination in FilterExec
> -----------------------------------------------
>
>                 Key: SPARK-42551
>                 URL: https://issues.apache.org/jira/browse/SPARK-42551
>             Project: Spark
>          Issue Type: Improvement
>          Components: SQL
>    Affects Versions: 3.3.2
>            Reporter: Wan Kun
>            Priority: Major
>
> Just like SPARK-33092, We can support subexpression elimination in FilterExec in Whole-stage codegen.
> For example:
> {code:java}
> SELECT * FROM (
>   SELECT v, v * v + 1 v1 from values(1) as t2(v)
> ) t
> where v > 0 and v1 > 5 and v1 < 10
> Codegen plan
> {code:java}
> *(1) Project [v#1, ((v#1 * v#1) + 1) AS v1#0]
> +- *(1) Filter (((v#1 > 0) AND (((v#1 * v#1) + 1) > 5)) AND (((v#1 * v#1) + 1) < 10))
>    +- *(1) LocalTableScan [v#1]
> {code}
> The subexpression *(v#1 * v#1) + 1* will be execute twice times.



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