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[SPARK-23301][SQL] data source column pruning should work for arbitrary expressions #20476

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[SPARK-23301][SQL] data source column pruning should work for arbitrary expressions #20476

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data source column pruning should work for arbitrary expressions
cloud-fan Feb 1, 2018
12c8035
address comments
cloud-fan Feb 2, 2018
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@cloud-fan
cloud-fan committed Feb 2, 2018
commit 12c8035704d4feb48e91e01566386a9fe522397b
4 changes: 2 additions & 2 deletions ...n/scala/org/apache/spark/sql/execution/datasources/v2/PushDownOperatorsToDataSource.scala
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Expand Up @@ -105,8 +105,8 @@ object PushDownOperatorsToDataSource extends Rule[LogicalPlan] with PredicateHel
case _ =>
}

// TODO: there may be more operators can be used to calculate required columns, we can add
// more and more in the future.
// TODO: there may be more operators that can be used to calculate the required columns. We
// can add more and more in the future.
case _ => plan.children.foreach(child => pushDownRequiredColumns(child, child.outputSet))
}
}
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