Select Query Oracle PLSQL

SQL>
SQL> CREATE TABLE departments
  2  (department_id           number(10)            not null,
  3   department_name      varchar2(50)      not null,
  4   CONSTRAINT departments_pk PRIMARY KEY (department_id)
  5  );
Table created.
SQL>
SQL>
SQL>
SQL> insert into departments ( department_id, department_name )
  2                    values( 1,             'Data Group' );
1 row created.
SQL>
SQL> insert into departments ( department_id, department_name )
  2                    values( 2,             'Purchasing' );
1 row created.
SQL>
SQL> insert into departments ( department_id, department_name )
  2                    values( 3,             'Call Center' );
1 row created.
SQL>
SQL> insert into departments ( department_id, department_name )
  2                    values( 4,             'Communication' );
1 row created.
SQL>
SQL>
SQL>  select department_name, upper( department_name )
  2      from departments
  3     where rownum < 2
  4     order by department_name
  5    /
DEPARTMENT_NAME
--------------------------------------------------
UPPER(DEPARTMENT_NAME)
--------------------------------------------------
Data Group
DATA GROUP
1 row selected.
SQL>
SQL> drop table departments;
Table dropped.
SQL>
SQL>
SQL> --