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-rw-r--r--python/pyspark/sql/readwriter.py3
1 files changed, 2 insertions, 1 deletions
diff --git a/python/pyspark/sql/readwriter.py b/python/pyspark/sql/readwriter.py
index 3d79e0cccc..a6860efa89 100644
--- a/python/pyspark/sql/readwriter.py
+++ b/python/pyspark/sql/readwriter.py
@@ -329,7 +329,8 @@ class DataFrameReader(OptionUtils):
being read should be skipped. If None is set, it uses
the default value, ``false``.
:param nullValue: sets the string representation of a null value. If None is set, it uses
- the default value, empty string.
+ the default value, empty string. Since 2.0.1, this ``nullValue`` param
+ applies to all supported types including the string type.
:param nanValue: sets the string representation of a non-number value. If None is set, it
uses the default value, ``NaN``.
:param positiveInf: sets the string representation of a positive infinity value. If None