text: --  @testpoint:opengauss关键字desc(保留)，作为外部数据源名
  
  --关键字不带引号-失败
  drop data source if exists desc;
  create data source desc;
  
  --关键字带双引号-成功
  drop data source if exists "desc";
  create data source "desc";
  drop data source "desc";
  
  --关键字带单引号-合理报错
  drop data source if exists 'desc';
  create data source 'desc';
  
  --关键字带反引号-合理报错
  drop data source if exists `desc`;
  create data source `desc`;
  