text: --  @testpoint:opengauss关键字Immediate(非保留)，作为模式名
  
  
  --关键字不带引号-成功
  drop schema if exists Immediate;
  create schema Immediate;
  drop schema Immediate;
  
  --关键字带双引号-成功
  drop schema if exists "Immediate";
  create schema "Immediate";
  drop schema "Immediate";
  
  --关键字带单引号-合理报错
  drop schema if exists 'Immediate';
  create schema 'Immediate';
  
  --关键字带反引号-合理报错
  drop schema if exists `Immediate`;
  create schema `Immediate`;
  