Github user gatorsmile commented on a diff in the pull request: https://github.com/apache/spark/pull/15523#discussion_r84010709 --- Diff: sql/core/src/main/scala/org/apache/spark/sql/execution/basicPhysicalOperators.scala --- @@ -87,7 +87,14 @@ case class FilterExec(condition: Expression, child: SparkPlan) // Split out all the IsNotNulls from condition. private val (notNullPreds, otherPreds) = splitConjunctivePredicates(condition).partition { - case IsNotNull(a: NullIntolerant) if a.references.subsetOf(child.outputSet) => true + case IsNotNull(a) => isNullIntolerant(a) && a.references.subsetOf(child.outputSet) + case _ => false + } + + // One expression is null intolerant iff it and its children are null intolerant + private def isNullIntolerant(expr: Expression): Boolean = expr match { + case e: NullIntolerant => + if (e.isInstanceOf[LeafExpression]) true else e.children.forall(isNullIntolerant) --- End diff -- Could you show me an example?
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