HyukjinKwon commented on a change in pull request #34229:
URL: https://github.com/apache/spark/pull/34229#discussion_r725439515
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File path: sql/core/src/main/scala/org/apache/spark/sql/functions.scala
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@@ -673,6 +673,23 @@ object functions {
*/
def max(columnName: String): Column = max(Column(columnName))
+ /**
+ * Aggregate function: returns the value associated with the maximum value
of ord.
+ *
+ * @group agg_funcs
+ * @since 3.3.0
+ */
+ def max_by(e: Column, ord: Column): Column = withAggregateFunction {
MaxBy(e.expr, ord.expr) }
+
+ /**
+ * Aggregate function: returns the value associated with the maximum value
of ord.
+ *
+ * @group agg_funcs
+ * @since 3.3.0
+ */
+ def max_by(columnName: String, ordColumnName: String): Column =
Review comment:
We will have too add them into PySpark and SparkR side too ... can be
done separately though. cc @yoda-mon FYI
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