cloud-fan commented on code in PR #36150:
URL: https://github.com/apache/spark/pull/36150#discussion_r919722209
##########
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/analysis/TypeCoercion.scala:
##########
@@ -736,6 +736,21 @@ abstract class TypeCoercionBase {
}
}
+ /**
+ * Determines the value type of a [[Melt]].
+ */
+ object MeltCoercion extends Rule[LogicalPlan] {
+ override def apply(plan: LogicalPlan): LogicalPlan =
+ plan resolveOperators {
+ case m: Melt if m.values.nonEmpty && m.values.forall(_.resolved) &&
m.valueType.isEmpty =>
+ val valueDataType =
findWiderTypeWithoutStringPromotion(m.values.map(_.dataType))
Review Comment:
`findWiderTypeWithoutStringPromotion` LGTM
--
This is an automated message from the Apache Git Service.
To respond to the message, please log on to GitHub and use the
URL above to go to the specific comment.
To unsubscribe, e-mail: [email protected]
For queries about this service, please contact Infrastructure at:
[email protected]
---------------------------------------------------------------------
To unsubscribe, e-mail: [email protected]
For additional commands, e-mail: [email protected]
