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