Github user viirya commented on a diff in the pull request:
https://github.com/apache/spark/pull/21361#discussion_r189214135
--- Diff:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/collectionOperations.scala
---
@@ -504,6 +504,9 @@ case class ArrayContains(left: Expression, right:
Expression)
override def dataType: DataType = BooleanType
+ @transient private lazy val ordering: Ordering[Any] =
+ TypeUtils.getInterpretedOrdering(right.dataType)
--- End diff --
Then in `checkInputDataTypes` we should check if there is `Ordering` for
`right.dataType`. Otherwise for example MapType will throw a match error.
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