Github user dragos commented on a diff in the pull request:
https://github.com/apache/spark/pull/7434#discussion_r34794015
--- Diff:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/analysis/unresolved.scala
---
@@ -96,7 +95,7 @@ case class UnresolvedFunction(name: String, children:
Seq[Expression]) extends E
* Represents all of the input attributes to a given relational operator,
for example in
* "SELECT * FROM ...". A [[Star]] gets automatically expanded during
analysis.
*/
-trait Star extends NamedExpression with trees.LeafNode[Expression] {
+abstract class Star extends LeafExpression with NamedExpression {
self: Product =>
--- End diff --
you could probably replace it with `with Product`.
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