lsyldliu commented on code in PR #25127:
URL: https://github.com/apache/flink/pull/25127#discussion_r1703130983
##########
flink-python/pyflink/table/expression.py:
##########
@@ -1315,6 +1315,16 @@ def rtrim(self) -> 'Expression[str]':
"""
return _unary_op("rtrim")(self)
+ def btrim(self, trim_str=None) -> 'Expression':
+ """
+ Removes any leading and trailing characters within trim_str from str.
+ trim_str is set to a space character by default.
Review Comment:
```suggestion
trim_str is set to whitespace by default.
```
##########
docs/data/sql_functions.yml:
##########
@@ -274,6 +274,12 @@ string:
- sql: RTRIM(string)
table: STRING.rtrim()
description: Returns a string that removes the right whitespaces from
STRING. E.g., 'This is a test String. '.rtrim() returns "This is a test
String.".
+ - sql: BTRIM(str[, trimStr])
+ table: str.btrim([trimStr])
+ description: |
+ Removes any leading and trailing characters within trimStr from str.
trimStr is set to a space character by default.
Review Comment:
```suggestion
Removes any leading and trailing characters within trimStr from str.
trimStr is set to whitespace by default.
```
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