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Posted to issues@spark.apache.org by "Apache Spark (Jira)" <ji...@apache.org> on 2022/04/21 16:44:00 UTC
[jira] [Assigned] (SPARK-38977) Fix schema pruning with correlated subqueries
[ https://issues.apache.org/jira/browse/SPARK-38977?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Apache Spark reassigned SPARK-38977:
------------------------------------
Assignee: Apache Spark
> 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
> Assignee: Apache Spark
> 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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