MaxGekk commented on a change in pull request #31961:
URL: https://github.com/apache/spark/pull/31961#discussion_r602215060



##########
File path: 
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/intervalExpressions.scala
##########
@@ -341,3 +341,53 @@ case class MultiplyDTInterval(
 
   override def toString: String = s"($left * $right)"
 }
+
+// Divide an year-month interval by a numeric
+case class DivideYMInterval(
+    interval: Expression,
+    num: Expression)
+  extends BinaryExpression with ImplicitCastInputTypes with NullIntolerant 
with Serializable {
+  override def left: Expression = interval
+  override def right: Expression = num
+
+  override def inputTypes: Seq[AbstractDataType] = Seq(YearMonthIntervalType, 
NumericType)
+  override def dataType: DataType = YearMonthIntervalType
+
+  @transient
+  private lazy val evalFunc: (Int, Any) => Any = right.dataType match {
+    case LongType => (months: Int, num) =>
+      LongMath.divide(months, num.asInstanceOf[Long], 
RoundingMode.HALF_UP).toInt

Review comment:
       I added comments in https://github.com/apache/spark/pull/31972




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