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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