zhengruifeng commented on code in PR #37569:
URL: https://github.com/apache/spark/pull/37569#discussion_r949747941
##########
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/aggregate/Mode.scala:
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@@ -92,3 +93,75 @@ case class Mode(
override protected def withNewChildInternal(newChild: Expression):
Expression =
copy(child = newChild)
}
+
+/**
+ * Mode in Pandas' fashion. This expression is dedicated only for Pandas API
on Spark.
+ */
+case class PandasMode(
Review Comment:
since only `def merge` and `inputTypes` can be reused, so it maybe not
worthwhile
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