Github user hvanhovell commented on a diff in the pull request:
https://github.com/apache/spark/pull/14136#discussion_r70243206
--- Diff: sql/core/src/main/scala/org/apache/spark/sql/functions.scala ---
@@ -536,6 +536,25 @@ object functions {
def min(columnName: String): Column = min(Column(columnName))
/**
+ * Aggregate function: returns the exact percentile(s) of the expression
in a group at pc with
+ * range in [0, 1].
+ *
+ * @group agg_funcs
+ * @since 2.1.0
+ */
+ def percentile(e: Column, pc: Seq[Double]): Column =
+ withAggregateFunction {Percentile(e.expr, pc)}
--- End diff --
Style: match the other code, e.g.: `def min(e: Column): Column =
withAggregateFunction { Min(e.expr) }`
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