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