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