Youngwb commented on a change in pull request #3439:
URL: https://github.com/apache/incubator-doris/pull/3439#discussion_r417923729
##########
File path: gensrc/script/doris_builtins_functions.py
##########
@@ -531,6 +531,8 @@
[['rpad'], 'VARCHAR', ['VARCHAR', 'INT', 'VARCHAR'],
'_ZN5doris15StringFunctions4rpadEPN9doris_udf'
'15FunctionContextERKNS1_9StringValERKNS1_6IntValES6_'],
+ [['append_trailing_char_if_absent'], 'VARCHAR', ['VARCHAR', 'VARCHAR'],
Review comment:
may be such like this :
```
MySQL [test]> select append_trailing_char_if_absent('http://google.com','/');
+----------------------------------------------------------+
| append_trailing_char_if_absent('http://google.com', '/') |
+----------------------------------------------------------+
| http://google.com/ |
+----------------------------------------------------------+
1 row in set (0.01 sec)
MySQL [test]> select
append_trailing_char_if_absent('http://google.com/','/');
+-----------------------------------------------------------+
| append_trailing_char_if_absent('http://google.com/', '/') |
+-----------------------------------------------------------+
| http://google.com/ |
+-----------------------------------------------------------+
```
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