Github user cloud-fan commented on a diff in the pull request:
https://github.com/apache/spark/pull/14539#discussion_r74066649
--- Diff:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/plans/logical/basicLogicalOperators.scala
---
@@ -769,3 +769,41 @@ case object OneRowRelation extends LeafNode {
*/
override lazy val statistics: Statistics = Statistics(sizeInBytes = 1)
}
+
+/**
+ * An inline table that holds a number of foldable expressions, which can
be materialized into
+ * rows. This is semantically the same as a Union of one row relations.
+ */
+case class InlineTable(rows: Seq[Seq[NamedExpression]]) extends LeafNode {
--- End diff --
should we assert `rows.nonEmpty`?
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