text: --  @testpoint:opengauss关键字leading(保留)，作为游标名
  
  --前置条件
  drop table if exists leading_test cascade;
  create table leading_test(cid int,fid int);
  
  --关键字不带引号-失败
  start transaction;
  cursor leading for select * from leading_test order by 1;
  close leading;
  end;
  
  --关键字带双引号-成功
  start transaction;
  cursor "leading" for select * from leading_test order by 1;
  close "leading";
  end;
  
  --关键字带单引号-合理报错
  start transaction;
  cursor 'leading' for select * from leading_test order by 1;
  close 'leading';
  end;
  
  --关键字带反引号-合理报错
  start transaction;
  cursor `leading` for select * from leading_test order by 1;
  close `leading`;
  end;
  
  --清理环境
  drop table leading_test cascade;