Github user rxin commented on a diff in the pull request: https://github.com/apache/spark/pull/15763#discussion_r86489433 --- Diff: sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/analysis/Analyzer.scala --- @@ -977,6 +977,13 @@ class Analyzer( localPredicateReferences -- p.outputSet } + // SPARK-17348 + // Report a non-supported case where there exists a correlated predicate + // that is not an equality predicate and the outer reference of the correlated predicate + // is not at the immediate parent operator. + def failOnNonEqualityPredicate(p: LogicalPlan): Unit = { --- End diff -- why define this since it is used only once?
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