voidbag commented on a change in pull request #24779: [SPARK-27929][SQL] Make
percentile function receive frq of double
URL: https://github.com/apache/spark/pull/24779#discussion_r313570118
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File path:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/aggregate/Percentile.scala
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@@ -67,16 +67,23 @@ case class Percentile(
child: Expression,
percentageExpression: Expression,
frequencyExpression : Expression,
+ isIntFreqExpression: Expression,
Review comment:
You are right. The logics are different. So the additional parameter is for
logic switching.
I thought the interpolation of value was based on the assumption that weight
is integer, which cannot be implemented with floating number. But I can't
remember the reason exactly. I'll put concrete example.
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