Github user HyukjinKwon commented on a diff in the pull request: https://github.com/apache/spark/pull/19389#discussion_r141999696 --- Diff: sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/analysis/TypeCoercion.scala --- @@ -149,7 +149,7 @@ object TypeCoercion { }) } - private def findWiderCommonType(types: Seq[DataType]): Option[DataType] = { + def findWiderCommonType(types: Seq[DataType]): Option[DataType] = { --- End diff -- Actually, these were removed in [SPARK-16813](https://issues.apache.org/jira/browse/SPARK-16813) and https://github.com/apache/spark/pull/14418 :).
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