L. C. Hsieh created SPARK-34548:
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Summary: 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
If there are any duplicate child of Union under Distince and Deduplicate, it
can be removed to simplify query plan.
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