Github user liancheng commented on a diff in the pull request: https://github.com/apache/spark/pull/2542#discussion_r18123559 --- Diff: sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/plans/logical/LogicalPlan.scala --- @@ -110,9 +110,18 @@ abstract class LogicalPlan extends QueryPlan[LogicalPlan] with Logging { } if (resolver(option.name, remainingParts.head)) { - // Preserve the case of the user's attribute reference. - (option.withName(remainingParts.head), remainingParts.tail.toList) :: Nil + if (remainingParts.length == 1) { + // for simple data type --- End diff -- Not only for simple data types, we can also select a whole `struct` field.
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