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