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