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