text: --  @testpoint:opengauss关键字duplicate(非保留)，作为用户组名
  
  
  --关键字不带引号-成功
  drop group if exists duplicate;
  create group duplicate with password 'gauss@123';
  drop group duplicate;
  
  --关键字带双引号-成功
  drop group if exists "duplicate";
  create group "duplicate" with password 'gauss@123';
  drop group "duplicate";
  
  --关键字带单引号-合理报错
  drop group if exists 'duplicate';
  create group 'duplicate' with password 'gauss@123';
  
  --关键字带反引号-合理报错
  drop group if exists `duplicate`;
  create group `duplicate` with password 'gauss@123';
  