[jira] [Created] (SPARK-25450) PushProjectThroughUnion rule uses the same exprId for project expressions in each Union child, causing mistakes in constant propagation

[Maryann Xue (JIRA)]

Maryann Xue created SPARK-25450:
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             Summary: PushProjectThroughUnion rule uses the same exprId for 
project expressions in each Union child, causing mistakes in constant 
propagation
                 Key: SPARK-25450
                 URL: https://issues.apache.org/jira/browse/SPARK-25450
             Project: Spark
          Issue Type: Improvement
          Components: SQL
    Affects Versions: 2.3.1
            Reporter: Maryann Xue






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