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https://issues.apache.org/jira/browse/SPARK-34548?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Apache Spark reassigned SPARK-34548:
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Assignee: L. C. Hsieh (was: Apache Spark)
> Remove unnecessary children from Union under Distince and Deduplicate
> ---------------------------------------------------------------------
>
> Key: SPARK-34548
> URL: https://issues.apache.org/jira/browse/SPARK-34548
> Project: Spark
> Issue Type: Improvement
> Components: SQL
> Affects Versions: 3.2.0
> Reporter: L. C. Hsieh
> Assignee: L. C. Hsieh
> Priority: Major
>
> If there are any duplicate child of Union under Distince and Deduplicate, it
> can be removed to simplify query plan.
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