SQL> select * from copy_emp;

EMPNO ENAME JOB MGR HIREDATE SAL COMM
---------- ---------- --------- ---------- -------------- ---------- ----------
DEPTNO
----------
7369 ZHAOYU CLERK 7902 17-12月-80 800
20

7499 ZHAOYU SALESMAN 7698 20-2月 -81 1600 300
30

7521 ZHAOYU SALESMAN 7698 22-2月 -81 1250 500
30

EMPNO ENAME JOB MGR HIREDATE SAL COMM
---------- ---------- --------- ---------- -------------- ---------- ----------
DEPTNO
----------
7566 ZHAOYU MANAGER 7839 02-4月 -81 2975
20

7654 ZHAOYU SALESMAN 7698 28-9月 -81 1250 1400
30

7698 ZHAOYU MANAGER 7839 01-5月 -81 2850
30

EMPNO ENAME JOB MGR HIREDATE SAL COMM
---------- ---------- --------- ---------- -------------- ---------- ----------
DEPTNO
----------
7782 ZHAOYU MANAGER 7839 09-6月 -81 2450
10

7788 ZHAOYU ANALYST 7566 19-4月 -87 3000
20

7839 ZHAOYU PRESIDENT 17-11月-81 5000
10

EMPNO ENAME JOB MGR HIREDATE SAL COMM
---------- ---------- --------- ---------- -------------- ---------- ----------
DEPTNO
----------
7844 ZHAOYU SALESMAN 7698 08-9月 -81 1500 0
30

7876 ZHAOYU CLERK 7788 23-5月 -87 1100
20

7900 ZHAOYU CLERK 7698 03-12月-81 950
30

EMPNO ENAME JOB MGR HIREDATE SAL COMM
---------- ---------- --------- ---------- -------------- ---------- ----------
DEPTNO
----------
7902 ZHAOYU ANALYST 7566 03-12月-81 3000
20

7934 ZHAOYU CLERK 7782 23-1月 -82 1300
10

7400 ZHAOYU MANAGER 02-8月 -05 2410
20

已选择15行。

SQL> merge into copy_emp c using emp e
2 on(c.empno=e.empno)
3 when matched then
4 update set
5 c.ename=e.ename,
6 c.hiredate=e.hiredate,
7 c.job=e.job
8 when not matched then
9 insert values(e.empno,e.ename,e.job,e.mgr,e.hiredate,e.sal,e.comm,e.deptno);

15 行已合并。

SQL> select * from copy_emp;

EMPNO ENAME JOB MGR HIREDATE SAL COMM
---------- ---------- --------- ---------- -------------- ---------- ----------
DEPTNO
----------
7369 SMITH CLERK 7902 17-12月-80 800
20

7400 ZHAOYU MANAGER 02-8月 -05 2410
20

7499 ALLEN SALESMAN 7698 20-2月 -81 1600 300
30

EMPNO ENAME JOB MGR HIREDATE SAL COMM
---------- ---------- --------- ---------- -------------- ---------- ----------
DEPTNO
----------
7521 WARD SALESMAN 7698 22-2月 -81 1250 500
30

7566 JONES MANAGER 7839 02-4月 -81 2975
20

7654 MARTIN SALESMAN 7698 28-9月 -81 1250 1400
30

EMPNO ENAME JOB MGR HIREDATE SAL COMM
---------- ---------- --------- ---------- -------------- ---------- ----------
DEPTNO
----------
7698 BLAKE MANAGER 7839 01-5月 -81 2850
30

7782 CLARK MANAGER 7839 09-6月 -81 2450
10

7788 SCOTT ANALYST 7566 19-4月 -87 3000
20

EMPNO ENAME JOB MGR HIREDATE SAL COMM
---------- ---------- --------- ---------- -------------- ---------- ----------
DEPTNO
----------
7839 KING PRESIDENT 17-11月-81 5000
10

7844 TURNER SALESMAN 7698 08-9月 -81 1500 0
30

7876 ADAMS CLERK 7788 23-5月 -87 1100
20

EMPNO ENAME JOB MGR HIREDATE SAL COMM
---------- ---------- --------- ---------- -------------- ---------- ----------
DEPTNO
----------
7900 JAMES CLERK 7698 03-12月-81 950
30

7902 FORD ANALYST 7566 03-12月-81 3000
20

7934 MILLER CLERK 7782 23-1月 -82 1300
10

已选择15行。