Github user HyukjinKwon commented on a diff in the pull request: https://github.com/apache/spark/pull/12768#discussion_r61523655 --- Diff: sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/util/TypeUtils.scala --- @@ -42,13 +42,14 @@ object TypeUtils { } def checkForSameTypeInputExpr(types: Seq[DataType], caller: String): TypeCheckResult = { - if (types.distinct.size > 1) { - TypeCheckResult.TypeCheckFailure( - s"input to $caller should all be the same type, but it's " + - types.map(_.simpleString).mkString("[", ", ", "]")) - } else { - TypeCheckResult.TypeCheckSuccess - } + types.foreach ( t => --- End diff -- (Maybe a curly brace for multiple lines of transformation function.) ```scala types.foreach { t => ... } ```
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