HyukjinKwon commented on code in PR #37434:
URL: https://github.com/apache/spark/pull/37434#discussion_r940058128
##########
python/pyspark/sql/functions.py:
##########
@@ -305,6 +305,40 @@ def mean(col: "ColumnOrName") -> Column:
return _invoke_function_over_columns("mean", col)
+def median(col: "ColumnOrName") -> Column:
+ """
+ Returns the median of the values in a group.
+
+ .. versionadded:: 3.4.0
+
+ Parameters
+ ----------
+ col : :class:`~pyspark.sql.Column` or str
+ target column that the value will be returned
+
+ Returns
+ -------
+ :class:`~pyspark.sql.Column`
+ value associated with the maximum value of ord.
+
+ Examples
+ --------
+ >>> df = spark.createDataFrame([
+ ... ("Java", 2012, 20000), ("dotNET", 2012, 5000),
+ ... ("Java", 2012, 22000), ("dotNET", 2012, 10000),
+ ... ("dotNET", 2013, 48000), ("Java", 2013, 30000)],
+ ... schema=("course", "year", "earnings"))
+ >>> df.groupby("course").agg(median("earnings")).show()
+ +------+----------------+
+ |course|median(earnings)|
+ +------+----------------+
+ | Java| 22000.0|
+ |dotNET| 10000.0|
+ +------+----------------+
+ """
+ return _invoke_function_over_columns("median", col)
Review Comment:
oh!
##########
python/pyspark/sql/functions.py:
##########
@@ -305,6 +305,40 @@ def mean(col: "ColumnOrName") -> Column:
return _invoke_function_over_columns("mean", col)
+def median(col: "ColumnOrName") -> Column:
+ """
+ Returns the median of the values in a group.
+
+ .. versionadded:: 3.4.0
+
+ Parameters
+ ----------
+ col : :class:`~pyspark.sql.Column` or str
+ target column that the value will be returned
+
+ Returns
+ -------
+ :class:`~pyspark.sql.Column`
+ value associated with the maximum value of ord.
+
+ Examples
+ --------
+ >>> df = spark.createDataFrame([
+ ... ("Java", 2012, 20000), ("dotNET", 2012, 5000),
+ ... ("Java", 2012, 22000), ("dotNET", 2012, 10000),
+ ... ("dotNET", 2013, 48000), ("Java", 2013, 30000)],
+ ... schema=("course", "year", "earnings"))
+ >>> df.groupby("course").agg(median("earnings")).show()
+ +------+----------------+
+ |course|median(earnings)|
+ +------+----------------+
+ | Java| 22000.0|
+ |dotNET| 10000.0|
+ +------+----------------+
+ """
+ return _invoke_function_over_columns("median", col)
Review Comment:
Sorry, I thought this is pandas API on Spark
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