Oracle PL/SQL/SQL Plus/Skip

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SQL>
SQL> create table emp
  2  ( empno      NUMBER(4)    constraint E_PK primary key
  3  , ename      VARCHAR2(8)
  4  , init       VARCHAR2(5)
  5  , job        VARCHAR2(8)
  6  , mgr        NUMBER(4)
  7  , bdate      DATE
  8  , sal        NUMBER(6,2)
  9  , comm       NUMBER(6,2)
 10  , deptno     NUMBER(2)    default 10
 11  ) ;

SQL>
SQL> break  on deptno skip page -
>        on job    skip 1
SQL>
SQL> select deptno, job, empno, ename, sal, comm
  2  from   emp
  3  order  by deptno, job;
Enter...
DEPTNO JOB       EMPNO ENAME       SAL   COMM
------ -------- ------ -------- ------ ------
    10 Designer      7 Chris      2450  [N/A]
                     9 Peter      5000  [N/A]
       Manager      14 Mike       1300  [N/A]
Enter... break
DEPTNO JOB       EMPNO ENAME       SAL   COMM
------ -------- ------ -------- ------ ------
    20 Designer      4 Jane       2975  [N/A]
       TRAINER       8 Smart      3000  [N/A]
                    11 Ana        1100  [N/A]
                    13 Fake       3000  [N/A]
                     1 Tom         800  [N/A]
Enter...
DEPTNO JOB       EMPNO ENAME       SAL   COMM
------ -------- ------ -------- ------ ------
    30 Designer      6 Black      2850  [N/A]
       Manager      12 Jane        800  [N/A]
       Tester       10 Take       1500      0
                     2 Jack       1600    300
                     3 Wil        1250    500
                     5 Mary       1250   1400

14 rows selected.
SQL> SP2-0042: unknown command "k" - rest of line ignored.
SQL>
SQL>
SQL> drop table emp;
Table dropped.