Peng-Lei commented on a change in pull request #32999:
URL: https://github.com/apache/spark/pull/32999#discussion_r655901644



##########
File path: 
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/datetimeExpressions.scala
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@@ -2701,8 +2702,11 @@ case class SubtractDates(
 
   override def inputTypes: Seq[AbstractDataType] = Seq(DateType, DateType)
   override def dataType: DataType = {
-    // TODO(SPARK-35727): Return INTERVAL DAY from dates subtraction
-    if (legacyInterval) CalendarIntervalType else DayTimeIntervalType()
+    if (legacyInterval) {
+      CalendarIntervalType
+    } else {
+      DayTimeIntervalType(DAY)
+    }

Review comment:
       @MaxGekk Thank you very much, I fix it. Thank you. 




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