Github user gatorsmile commented on a diff in the pull request: https://github.com/apache/spark/pull/19321#discussion_r140647928 --- Diff: sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/aggregate/ApproximatePercentile.scala --- @@ -123,7 +124,13 @@ case class ApproximatePercentile( val value = child.eval(inputRow) // Ignore empty rows, for example: percentile_approx(null) if (value != null) { - buffer.add(value.asInstanceOf[Double]) + // Convert the value to a double value + val doubleValue = child.dataType match { + case DateType => value.asInstanceOf[Int].toDouble + case TimestampType => value.asInstanceOf[Long].toDouble + case n: NumericType => n.numeric.toDouble(value.asInstanceOf[n.InternalType]) --- End diff -- The same here.
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