[jira] [Commented] (SPARK-38977) Fix schema pruning with correlated subqueries

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

    [ https://issues.apache.org/jira/browse/SPARK-38977?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17525844#comment-17525844 ] 

Apache Spark commented on SPARK-38977:
--------------------------------------

User 'aokolnychyi' has created a pull request for this issue:
https://github.com/apache/spark/pull/36303

> Fix schema pruning with correlated subqueries
> ---------------------------------------------
>
>                 Key: SPARK-38977
>                 URL: https://issues.apache.org/jira/browse/SPARK-38977
>             Project: Spark
>          Issue Type: Bug
>          Components: SQL
>    Affects Versions: 3.2.0, 3.2.1, 3.3.0
>            Reporter: Anton Okolnychyi
>            Priority: Major
>
> Schema pruning fails for some queries with correlated subqueries.
> {noformat}
> sql(
>   s"""SELECT name FROM contacts c
>      |WHERE
>      | EXISTS (SELECT 1 FROM ids i WHERE i.value = c.id)
>      | AND
>      | EXISTS (SELECT 1 FROM first_names n WHERE c.name.first = n.value)
>      |""".stripMargin)
> {noformat}
> {noformat}
> [info]   org.apache.spark.SparkException: Failed to merge fields 'value' and 'value'. Failed to merge incompatible data types int and string
> [info]   at org.apache.spark.sql.errors.QueryExecutionErrors$.failedMergingFieldsError(QueryExecutionErrors.scala:936)
> {noformat}



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