mihailom-db commented on code in PR #45693:
URL: https://github.com/apache/spark/pull/45693#discussion_r1537277643
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sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/collectionOperations.scala:
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@@ -2149,7 +2159,7 @@ case class ArrayJoin(
}
}
- override def dataType: DataType = StringType
+ override def dataType: DataType = commonType
Review Comment:
Why not use some type of pass through where we would say dataType =
array.asInstanceOf[ArrayType].elementType? Implicit casting should solve the
problem of collations.
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