diff options
| -rw-r--r-- | python/pyspark/sql/dataframe.py | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/python/pyspark/sql/dataframe.py b/python/pyspark/sql/dataframe.py index 8ff9403d59..0cbb3adfa8 100644 --- a/python/pyspark/sql/dataframe.py +++ b/python/pyspark/sql/dataframe.py @@ -1388,6 +1388,7 @@ class DataFrame(object): @since(1.3) def withColumnRenamed(self, existing, new): """Returns a new :class:`DataFrame` by renaming an existing column. + This is a no-op if schema doesn't contain the given column name. :param existing: string, name of the existing column to rename. :param col: string, new name of the column. @@ -1401,6 +1402,7 @@ class DataFrame(object): @ignore_unicode_prefix def drop(self, *cols): """Returns a new :class:`DataFrame` that drops the specified column. + This is a no-op if schema doesn't contain the given column name(s). :param cols: a string name of the column to drop, or a :class:`Column` to drop, or a list of string name of the columns to drop. |