cloud-fan commented on a change in pull request #26995: [SPARK-30341][SQL]
Overflow check for interval arithmetic operations
URL: https://github.com/apache/spark/pull/26995#discussion_r361084511
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File path:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/arithmetic.scala
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@@ -37,6 +37,11 @@ case class UnaryMinus(child: Expression) extends
UnaryExpression
with ExpectsInputTypes with NullIntolerant {
private val checkOverflow = SQLConf.get.ansiEnabled
+ override def nullable: Boolean = dataType match {
+ case CalendarIntervalType if !checkOverflow => true
+ case _ => super.nullable
Review comment:
nit: `child.nullable` is more clear here.
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