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https://issues.apache.org/jira/browse/SPARK-9173?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14633059#comment-14633059
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Reynold Xin commented on SPARK-9173:
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[~viirya] interested in doing this one as well?
> UnionPushDown should also support Intersect and Except in addition to Union
> ---------------------------------------------------------------------------
>
> Key: SPARK-9173
> URL: https://issues.apache.org/jira/browse/SPARK-9173
> Project: Spark
> Issue Type: Sub-task
> Components: SQL
> Reporter: Reynold Xin
>
> UnionPushDown transforms only Union. It should also transform Intersect and
> Except.
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