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