mihailom-db commented on code in PR #48893:
URL: https://github.com/apache/spark/pull/48893#discussion_r1849137640


##########
sql/core/src/main/scala/org/apache/spark/sql/execution/window/WindowEvaluatorFactoryBase.scala:
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@@ -101,6 +101,8 @@ trait WindowEvaluatorFactoryBase {
         val boundExpr = (expr.dataType, boundOffset.dataType) match {
           case (DateType, IntegerType) => DateAdd(expr, boundOffset)
           case (DateType, _: YearMonthIntervalType) => DateAddYMInterval(expr, 
boundOffset)
+          case (DateType, _: DayTimeIntervalType) =>
+            DateAdd(expr, ExtractANSIIntervalDays(boundOffset))

Review Comment:
   I need to fix tests, but basically in windowFrame if we have 
DayTimeIntervalType for start_frame, and date as current column, we will fail 
instead of doing the window function properly.



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