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