Github user gatorsmile commented on a diff in the pull request:
https://github.com/apache/spark/pull/20816#discussion_r178322820
--- Diff:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/optimizer/Optimizer.scala
---
@@ -669,11 +672,42 @@ object InferFiltersFromConstraints extends
Rule[LogicalPlan] with PredicateHelpe
val newConditionOpt = conditionOpt match {
case Some(condition) =>
val newFilters = additionalConstraints --
splitConjunctivePredicates(condition)
- if (newFilters.nonEmpty) Option(And(newFilters.reduce(And),
condition)) else None
+ if (newFilters.nonEmpty) Option(And(newFilters.reduce(And),
condition)) else conditionOpt
--- End diff --
Can we keep this unchanged? We just `conditionOpt` in line 681, 685, 693,
and 697?
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