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