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