text: --  @testpoint:opengauss关键字Asymmetric(保留)，作为序列名
  
  
  --关键字不带引号-合理报错
  drop sequence if exists Asymmetric;
  create sequence Asymmetric start 100 cache 50;
  
  --关键字带双引号-成功
  drop sequence if exists "Asymmetric";
  create sequence "Asymmetric" start 100 cache 50;
  
  --清理环境
  drop sequence "Asymmetric";
  
  --关键字带单引号-合理报错
  drop sequence if exists 'Asymmetric';
  create sequence 'Asymmetric' start 100 cache 50;
  
  --关键字带反引号-合理报错
  drop sequence if exists `Asymmetric`;
  create sequence `Asymmetric` start 100 cache 50;
  