Github user rxin commented on a diff in the pull request: https://github.com/apache/spark/pull/14095#discussion_r70028704 --- Diff: sql/core/src/main/scala/org/apache/spark/sql/Dataset.scala --- @@ -228,6 +228,15 @@ class Dataset[T] private[sql]( } } + private def aggregatableColumns: Seq[Expression] = { + schema.fields + .filter(f => f.dataType.isInstanceOf[NumericType] || f.dataType.isInstanceOf[StringType]) + .map { n => + queryExecution.analyzed.resolveQuoted(n.name, sparkSession.sessionState.analyzer.resolver) + .get --- End diff -- is it possible that this would fail?
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