pyspark.sql.functions.lower#

pyspark.sql.functions.lower(col)[source]#

Converts a string expression to lower case.

New in version 1.5.0.

Changed in version 3.4.0: Supports Spark Connect.

Parameters

colColumn or column name: target column to work on.

Returns

Column: lower case values.

See also

pyspark.sql.functions.upper()

Examples

>>> from pyspark.sql import functions as sf
>>> df = spark.createDataFrame(["Spark", "PySpark", "Pandas API"], "STRING")
>>> df.select("*", sf.lower("value")).show()
+----------+------------+
|     value|lower(value)|
+----------+------------+
|     Spark|       spark|
|   PySpark|     pyspark|
|Pandas API|  pandas api|
+----------+------------+