Github user viirya commented on a diff in the pull request: https://github.com/apache/spark/pull/17636#discussion_r111546429 --- Diff: sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/analysis/Analyzer.scala --- @@ -1219,7 +1241,8 @@ class Analyzer( // Make sure a plan's expressions do not contain outer references def failOnOuterReference(p: LogicalPlan): Unit = { - if (p.expressions.exists(containsOuter)) { + p.expressions.foreach(checkMixedReferencesInsideAggregation) + if (!p.isInstanceOf[Filter] && p.expressions.exists(containsOuter)) { --- End diff -- oh. I found it.
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