sqlplus中break命令的使用

break命令将重复的列 分成一组显示 假设 scott方案中的列job进行break

SQL> select job,ename from emp order by job;

JOB ENAME

------------------ --------------------

ANALYST SCOTT

ANALYST FORD

CLERK MILLER

CLERK JAMES

CLERK SMITH

CLERK ADAMS

MANAGER BLAKE

MANAGER JONES

MANAGER CLARK

PRESIDENT KING

SALESMAN TURNER

SALESMAN MARTIN

SALESMAN WARD

SALESMAN ALLEN

已选择14行。

SQL> break on job;

SQL> select job,ename from emp order by job;

这里显示的结果 相同的job只有第一个被显示了 其他的去掉了 只是一种显示的方式而已

JOB ENAME

------------------ --------------------

ANALYST SCOTT

FORD

CLERK MILLER

JAMES

SMITH

ADAMS

MANAGER BLAKE

JONES

CLARK

PRESIDENT KING

SALESMAN TURNER

MARTIN

WARD

ALLEN

清除break

SQL> clear breaks;

breaks 已清除

SQL> select job,ename from emp order by job;

JOB ENAME

------------------ --------------------

ANALYST SCOTT

ANALYST FORD

CLERK MILLER

CLERK JAMES

CLERK SMITH

CLERK ADAMS

MANAGER BLAKE

MANAGER JONES

MANAGER CLARK

PRESIDENT KING

SALESMAN TURNER

SALESMAN MARTIN

SALESMAN WARD

SALESMAN ALLEN

已选择14行。