Github user viirya commented on a diff in the pull request:
https://github.com/apache/spark/pull/11995#discussion_r58000861
--- Diff:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/plans/logical/basicOperators.scala
---
@@ -514,12 +524,13 @@ private[sql] object Expand {
* @param projections to apply
* @param output of all projections.
* @param child operator.
+ * @param groupByAttrs the attributes used in group by.
*/
case class Expand(
projections: Seq[Seq[Expression]],
output: Seq[Attribute],
- child: LogicalPlan) extends UnaryNode {
-
+ child: LogicalPlan,
+ groupByAttrs: Seq[Attribute]) extends UnaryNode {
--- End diff --
Thanks for pointing the problem. Agreed after re-thinking about it. As
separating `projections` and `output` causes the problem. How about we get the
output from `projections`?
As there are more than one projection, we can just get the output from the
first projection and verify its consistency with other projections.
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