text: --  @testpoint:修改序列拥有者
  --创建序列
  drop SEQUENCE if exists serial_c;
  CREATE SEQUENCE serial_c INCREMENT by 2 MAXVALUE 5 cycle;
  --创建系统管理员用户
  drop user if exists test_user1 cascade;
  create user test_user1 with sysadmin password 'Xiaxia@123';
  --修改序列拥有者（省略if exists）
  ALTER SEQUENCE serial_c owner to test_user1;
  --添加if exists
  ALTER SEQUENCE if exists serial_c owner to test_user1;
  --修改不存在的序列，添加if exists，notice提示
  ALTER SEQUENCE if exists serial_cafdsfc owner to test_user1;
  --修改不存在的序列，省略if exists，合理报错
  ALTER SEQUENCE serial_cafdsfc owner to test_user1;
  --删除序列
  drop SEQUENCE serial_c;
  --删除用户
  drop user test_user1 cascade;
  
  
  
  
  