text: --  @testpoint:opengauss关键字password(非保留)，作为表空间名
  
  
  --关键字不带引号，创建成功
  drop tablespace if exists password;
  CREATE TABLESPACE password RELATIVE LOCATION 'hdfs_tablespace/hdfs_tablespace_1';
  drop tablespace password;
   
  --关键字带双引号，创建成功
  drop tablespace if exists "password";
  CREATE TABLESPACE "password" RELATIVE LOCATION 'hdfs_tablespace/hdfs_tablespace_1'; 
  drop tablespace "password";
  
  --关键字带单引号，合理报错
  drop tablespace if exists 'password';
  CREATE TABLESPACE 'password' RELATIVE LOCATION 'hdfs_tablespace/hdfs_tablespace_1'; 
  
  --关键字带反引号，合理报错
  drop tablespace if exists `password`;
  CREATE TABLESPACE `password` RELATIVE LOCATION 'hdfs_tablespace/hdfs_tablespace_1';
  
  