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