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