text: --  @testpoint:opengauss关键字prepared(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 prepared;
  create data source prepared;
  drop data source prepared;
  
  --关键字带双引号-成功
  drop data source if exists "prepared";
  create data source "prepared";
  drop data source "prepared";
  
  --关键字带单引号-合理报错
  drop data source if exists 'prepared';
  create data source 'prepared';
  
  --关键字带反引号-合理报错
  drop data source if exists `prepared`;
  create data source `prepared`;
  