MaxGekk commented on code in PR #56889:
URL: https://github.com/apache/spark/pull/56889#discussion_r3497379990


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sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/aggregate/percentiles.scala:
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@@ -75,7 +75,8 @@ abstract class PercentileBase
       case _: ArrayType => ArrayType(DoubleType, false)
       case _ => DoubleType
     }
-    Seq(NumericAndAnsiInterval, percentageExpType, IntegralType)
+    Seq(TypeCollection(NumericType, DayTimeIntervalType, 
YearMonthIntervalType, AnyTimeType),

Review Comment:
   Non-blocking: this re-inlines the three types that `NumericAndAnsiInterval` 
already groups (`NumericType, DayTimeIntervalType, YearMonthIntervalType`). 
Since `TypeCollection` nests/flattens, you can keep the named abstraction and 
just add the new type:
   ```suggestion
       Seq(TypeCollection(NumericAndAnsiInterval, AnyTimeType),
   ```
   That keeps this call site in sync if `NumericAndAnsiInterval` ever changes. 
(You'll also keep the existing `import 
...TypeCollection.NumericAndAnsiInterval` rather than removing it.)



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