Github user gatorsmile commented on a diff in the pull request:
https://github.com/apache/spark/pull/20495#discussion_r165821762
--- Diff: python/pyspark/sql/functions.py ---
@@ -1705,10 +1705,12 @@ def unhex(col):
@ignore_unicode_prefix
@since(1.5)
def length(col):
- """Calculates the length of a string or binary expression.
+ """Computes the character length of a given string or number of bytes
or a binary string.
+ The length of character strings include the trailing spaces. The
length of binary strings
+ includes binary zeros.
- >>> spark.createDataFrame([('ABC',)],
['a']).select(length('a').alias('length')).collect()
- [Row(length=3)]
+ >>> spark.createDataFrame([('ABC ',)],
['a']).select(length('a').alias('length')).collect()
--- End diff --
Done
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