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