Github user viirya commented on a diff in the pull request: https://github.com/apache/spark/pull/17948#discussion_r116161956 --- Diff: sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/analysis/Analyzer.scala --- @@ -1003,18 +1003,32 @@ class Analyzer( */ object ResolveAggAliasInGroupBy extends Rule[LogicalPlan] { + // This is a strict check though, we put this to apply the rule only if the expression is not + // resolvable by child. + private def notResolvableByChild(attrName: String, child: LogicalPlan): Boolean = { + !child.output.exists(a => resolver(a.name, attrName)) + } + override def apply(plan: LogicalPlan): LogicalPlan = plan.resolveOperators { case agg @ Aggregate(groups, aggs, child) if conf.groupByAliases && child.resolved && aggs.forall(_.resolved) && - groups.exists(_.isInstanceOf[UnresolvedAttribute]) => - // This is a strict check though, we put this to apply the rule only in alias expressions - def notResolvableByChild(attrName: String): Boolean = - !child.output.exists(a => resolver(a.name, attrName)) - agg.copy(groupingExpressions = groups.map { - case u: UnresolvedAttribute if notResolvableByChild(u.name) => + groups.exists(!_.resolved) => + agg.copy(groupingExpressions = groups.map { _.transform { + case u: UnresolvedAttribute if notResolvableByChild(u.name, child) => + aggs.find(ne => resolver(ne.name, u.name)).getOrElse(u) + } + }) + + case gs @ GroupingSets(selectedGroups, groups, child, aggs) + if conf.groupByAliases && child.resolved && aggs.forall(_.resolved) && + (selectedGroups :+ groups).exists(_.exists(_.isInstanceOf[UnresolvedAttribute])) => --- End diff -- Oh. nvm. It is of course.
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