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https://issues.apache.org/jira/browse/SPARK-39887?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17580137#comment-17580137
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Apache Spark commented on SPARK-39887:
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User 'peter-toth' has created a pull request for this issue:
https://github.com/apache/spark/pull/37534
> Expression transform error
> --------------------------
>
> Key: SPARK-39887
> URL: https://issues.apache.org/jira/browse/SPARK-39887
> Project: Spark
> Issue Type: Bug
> Components: SQL
> Affects Versions: 3.2.1, 3.3.0, 3.2.2
> Reporter: zhuml
> Assignee: Peter Toth
> Priority: Major
> Fix For: 3.1.4, 3.4.0, 3.3.1, 3.2.3
>
>
> {code:java}
> spark.sql(
> """
> |select to_date(a) a, to_date(b) b from
> |(select a, a as b from
> |(select to_date(a) a from
> | values ('2020-02-01') as t1(a)
> | group by to_date(a)) t3
> |union all
> |select a, b from
> |(select to_date(a) a, to_date(b) b from
> |values ('2020-01-01','2020-01-02') as t1(a, b)
> | group by to_date(a), to_date(b)) t4) t5
> |group by to_date(a), to_date(b)
> |""".stripMargin).show(){code}
> result is (2020-02-01, 2020-02-01), (2020-01-01, 2020-01-01)
> expected (2020-02-01, 2020-02-01), (2020-01-01, 2020-01-02)
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