MaxGekk commented on a change in pull request #32849:
URL: https://github.com/apache/spark/pull/32849#discussion_r649411815
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File path:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/aggregate/Average.scala
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@@ -95,7 +95,7 @@ case class Average(child: Expression) extends
DeclarativeAggregate with Implicit
Literal(null, YearMonthIntervalType), DivideYMInterval(sum, count))
case _: DayTimeIntervalType =>
If(EqualTo(count, Literal(0L)),
- Literal(null, DayTimeIntervalType), DivideDTInterval(sum, count))
+ Literal(null, DayTimeIntervalType.defaultConcreteType),
DivideDTInterval(sum, count))
Review comment:
As we discussed offline, we should use wider type `interval day to
second` in `Average`. It should be the same as the returned type from
`DivideDTInterval`. Also see `resultType` in the class.
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