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