Github user davies commented on a diff in the pull request:
https://github.com/apache/spark/pull/7581#discussion_r35616625
--- Diff:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/collectionOperations.scala
---
@@ -35,3 +36,45 @@ case class Size(child: Expression) extends
UnaryExpression with ExpectsInputType
nullSafeCodeGen(ctx, ev, c => s"${ev.primitive} = ($c).size();")
}
}
+
+/**
+ * Sorts the input array in ascending order according to the natural
ordering of
+ * the array elements and returns it.
+ */
+case class SortArray(child: Expression)
+ extends UnaryExpression with ExpectsInputTypes with CodegenFallback {
+
+ override def dataType: DataType = child.dataType
+ override def inputTypes: Seq[AbstractDataType] = Seq(ArrayType)
+
+ override def checkInputDataTypes(): TypeCheckResult = child.dataType
match {
+ case _ @ ArrayType(n: AtomicType, _) =>
TypeCheckResult.TypeCheckSuccess
+ case other => TypeCheckResult.TypeCheckFailure(
--- End diff --
`other` could be ArrayType of non-atomic types, or not a ArrayType, we
could be have different error messages for them.
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