Github user nongli commented on a diff in the pull request: https://github.com/apache/spark/pull/11665#discussion_r56239534 --- Diff: sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/optimizer/Optimizer.scala --- @@ -78,7 +78,7 @@ abstract class Optimizer extends RuleExecutor[LogicalPlan] { CombineLimits, CombineUnions, // Constant folding and strength reduction - NullFiltering, + InferFiltersFromConstraints, --- End diff -- This rule doesn't seem related to the comment above it (same for nullfiltering)
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