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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