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