text: --  @testpoint:opengauss关键字abort(非保留)，作为角色名
  --关键字不带引号-成功
  drop role if exists abort;
  create role abort with password 'gauss@123' valid until '2020-12-31';
  
  --清理环境
  drop role abort;
  
  --关键字带双引号-成功
  drop role if exists "abort";
  create role "abort" with password 'gauss@123' valid until '2020-12-31';
  
  --清理环境
  drop role "abort";
  
  --关键字带单引号-合理报错
  drop role if exists 'abort';
  create role 'abort' with password 'gauss@123' valid until '2020-12-31';
  
  --关键字带反引号-合理报错
  drop role if exists `abort`;
  create role `abort` with password 'gauss@123' valid until '2020-12-31';
  