Github user marmbrus commented on a diff in the pull request:
https://github.com/apache/spark/pull/4602#discussion_r24715815
--- Diff:
sql/core/src/main/scala/org/apache/spark/sql/execution/Generate.scala ---
@@ -34,17 +36,22 @@ import org.apache.spark.sql.catalyst.expressions._
@DeveloperApi
case class Generate(
generator: Generator,
+ tblAlias: Option[String],
join: Boolean,
outer: Boolean,
child: SparkPlan)
extends UnaryNode {
// This must be a val since the generator output expr ids are not
preserved by serialization.
--- End diff --
I'm tempted to remove all this complicated logic and just make the
attributes produced an argument to the `Generate` operator.
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