Github user bdrillard commented on a diff in the pull request: https://github.com/apache/spark/pull/20010#discussion_r157792439 --- Diff: sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/analysis/TypeCoercion.scala --- @@ -182,12 +188,6 @@ object TypeCoercion { t2: DataType): Option[DataType] = { findTightestCommonType(t1, t2) .orElse(findWiderTypeForDecimal(t1, t2)) - .orElse((t1, t2) match { - case (ArrayType(et1, containsNull1), ArrayType(et2, containsNull2)) => - findWiderTypeWithoutStringPromotionForTwo(et1, et2) - .map(ArrayType(_, containsNull1 || containsNull2)) - case _ => None - }) --- End diff -- Same comment here, as above.
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