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