mybatis-plus复杂sql语句编写

像这样的sql一般都在mapper里通过@select注解来做吧，如下：
持久层：
@Select(“select * from role where role_code in(select role_code from user_role where username = #{username})”)
List getUserRoles(String username);
业务处理：
List list = userMapper.getUserRoles(username);