Github user maropu commented on a diff in the pull request:
https://github.com/apache/spark/pull/17191#discussion_r112125706
--- Diff:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/analysis/Analyzer.scala
---
@@ -2349,7 +2350,26 @@ class Analyzer(
}
/**
- * Replace [[TimeZoneAwareExpression]] without timezone id by its copy
with session local
+ * Replace unresolved expressions in grouping keys with resolved ones in
SELECT clauses.
+ */
+ object ResolveAggAliasInGroupBy extends Rule[LogicalPlan] {
+
+ override def apply(plan: LogicalPlan): LogicalPlan =
plan.resolveOperators {
+ case agg @ Aggregate(groups, aggs, child)
+ if conf.groupByAliasesEnabled && child.resolved &&
groups.exists(!_.resolved) =>
--- End diff --
In the latest fix, we still run this rule and throw an exception ASAP in
that illegal case. How about this?
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