字段处理rtrim去掉结尾的特殊字符和空格

SQL> create table ycrtest2 (name varchar2(50));

Table created.

SQL> insert into ycrtest2 values('ABC       @@');

1 row created.

SQL> insert into ycrtest2 values('AB C      @@@');

1 row created.

SQL> commit;

Commit complete.

SQL> 
SQL> 
SQL> SELECT rtrim(rtrim('AB C       @@', '@'), ' ') rtrim_result FROM dual;

RTRI
----
AB C

SQL> SELECT rtrim(rtrim(name, '@'), ' ') rtrim_result FROM ycrtest2;

RTRIM_RESULT
--------------------------------------------------
ABC
AB C