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Posted to issues@spark.apache.org by "Davies Liu (JIRA)" <ji...@apache.org> on 2016/04/12 18:47:25 UTC

[jira] [Created] (SPARK-14562) Improve constraints propagation in Union

Davies Liu created SPARK-14562:
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             Summary: Improve constraints propagation in Union
                 Key: SPARK-14562
                 URL: https://issues.apache.org/jira/browse/SPARK-14562
             Project: Spark
          Issue Type: Improvement
          Components: SQL
            Reporter: Davies Liu
            Assignee: Davies Liu


Currently, Union only takes intersect of the constraints from it's children, all others are dropped, we should try to merge them together.



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