Github user cloud-fan commented on a diff in the pull request:
https://github.com/apache/spark/pull/22518#discussion_r233032650
--- Diff:
sql/core/src/main/scala/org/apache/spark/sql/execution/subquery.scala ---
@@ -22,7 +22,7 @@ import scala.collection.mutable.ArrayBuffer
import org.apache.spark.sql.SparkSession
import org.apache.spark.sql.catalyst.{expressions, InternalRow}
-import org.apache.spark.sql.catalyst.expressions.{Expression, ExprId,
InSet, Literal, PlanExpression}
+import org.apache.spark.sql.catalyst.expressions.{Expression, ExprId,
InSet, Literal, NamedExpression, PlanExpression}
--- End diff --
unnecessary change
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