Github user MLnick commented on a diff in the pull request: https://github.com/apache/spark/pull/16971#discussion_r102145538 --- Diff: sql/core/src/main/scala/org/apache/spark/sql/DataFrameStatFunctions.scala --- @@ -89,18 +89,17 @@ final class DataFrameStatFunctions private[sql](df: DataFrame) { * Note that values greater than 1 are accepted but give the same result as 1. * @return the approximate quantiles at the given probabilities of each column * - * @note Rows containing any null or NaN values will be removed before calculation. If - * the dataframe is empty or all rows contain null or NaN, null is returned. + * @note null and NaN values will be removed from the numerical column before calculation. If --- End diff -- Again, "ignored" is slightly better than "removed from"
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