Github user adrian-wang commented on a diff in the pull request:
https://github.com/apache/spark/pull/2082#discussion_r16539375
--- Diff:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/plans/logical/LogicalPlan.scala
---
@@ -108,6 +109,8 @@ abstract class LogicalPlan extends
QueryPlan[LogicalPlan] {
a.dataType match {
case StructType(fields) =>
Some(Alias(nestedFields.foldLeft(a: Expression)(GetField),
nestedFields.last)())
+ case fields :ArrayType =>
--- End diff --
Maybe it is better to use `case ArrayType(fields)`
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