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From cloud-fan <>
Subject [GitHub] spark pull request: [SPARK-12828][SQL]add natural join support
Date Tue, 26 Jan 2016 07:51:16 GMT
Github user cloud-fan commented on a diff in the pull request:
    --- Diff: sql/core/src/main/scala/org/apache/spark/sql/DataFrame.scala ---
    @@ -474,6 +474,7 @@ class DataFrame private[sql](
               val rightCol = withPlan(joined.right).resolve(col).toAttribute.withNullability(true)
               Alias(Coalesce(Seq(leftCol, rightCol)), col)()
    +      case NaturalJoin(_) => sys.error("NaturalJoin with using clause is not supported.")
    --- End diff --
    Are we going to support natural join in `DataFrame`? If so, I think we should also change

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