Github user cloud-fan commented on a diff in the pull request: https://github.com/apache/spark/pull/18813#discussion_r131803516 --- Diff: sql/core/src/test/scala/org/apache/spark/sql/DatasetSuite.scala --- @@ -34,6 +34,11 @@ import org.apache.spark.sql.types._ case class TestDataPoint(x: Int, y: Double, s: String, t: TestDataPoint2) case class TestDataPoint2(x: Int, s: String) +object TestForTypeAlias { + type TwoInt = (Int, Int) --- End diff -- let's also test nested type alias
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