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https://issues.apache.org/jira/browse/SPARK-14858?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15254708#comment-15254708
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Herman van Hovell commented on SPARK-14858:
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You want me to take this one?
> Push predicates with subquery
> ------------------------------
>
> Key: SPARK-14858
> URL: https://issues.apache.org/jira/browse/SPARK-14858
> Project: Spark
> Issue Type: Improvement
> Components: SQL
> Reporter: Davies Liu
>
> Currently we rewrite the subquery as Join in the beginning of Optimizer, we
> should defer that to enable predicates push down (because Join can't be
> easily pushed down).
> cc [~hvanhovell]
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