Github user cloud-fan commented on a diff in the pull request:
https://github.com/apache/spark/pull/11283#discussion_r54842401
--- Diff:
sql/hive/src/main/scala/org/apache/spark/sql/hive/SQLBuilder.scala ---
@@ -85,6 +86,9 @@ class SQLBuilder(logicalPlan: LogicalPlan, sqlContext:
SQLContext) extends Loggi
case p: Project =>
projectToSQL(p, isDistinct = false)
+ case a @ Aggregate(_, _, e @ Expand(_, _, p: Project)) =>
--- End diff --
we can add a safe guard here, only handle it as grouping set when `p.output
== p.child.output ++ a.groupingExpressions`. (`==` is wrong here as nullability
may differ, we can add a `sameOutput` method that use `semanticEquals`)
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