创建示例表emp和dept

创建dept表的代码如下：

1. CREATE TABLE dept
2. (deptno NUMBER(2),
3.     dname VARCHAR2(14) ,
4.     loc VARCHAR2(13) ) ;

创建emp表的代码如下：

1. CREATE TABLE emp(
2. empno NUMBER(4),
3.     ename VARCHAR2(10),
4.     job VARCHAR2(9),
5.     mgr NUMBER(4),
6.     hiredate DATE,
7.     sal NUMBER(7,2),
8.     comm NUMBER(7,2)
9. );

为dept表插入示例数据的代码如下：

1. INSERT INTO dept VALUES
2.     (10,'ACCOUNTING','NEW YORK');
3. INSERT INTO dept VALUES
4. (20,'RESEARCH','DALLAS');
5. INSERT INTO dept VALUES
6.     (30,'SALES','CHICAGO');
7. INSERT INTO dept VALUES
8.     (40,'OPERATIONS','BOSTON');

为emp表插入示例数据的代码如下：

1. INSERT INTO emp VALUES(7369,'SMITH','CLERK',7902,to_date('17-12-1980','dd-mm-yyyy'),800,NULL,20);
2. INSERT INTO emp VALUES(7499,'ALLEN','SALESMAN',7698,to_date('20-2-1981','dd-mm-yyyy'),1600,300,30);
3. INSERT INTO emp VALUES(7521,'WARD','SALESMAN',7698,to_date('22-2-1981','dd-mm-yyyy'),1250,500,30);
4. INSERT INTO emp VALUES(7566,'JONES','MANAGER',7839,to_date('2-4-1981','dd-mm-yyyy'),2975,NULL,20);
5. INSERT INTO emp VALUES(7654,'MARTIN','SALESMAN',7698,to_date('28-9-1981','dd-mm-yyyy'),1250,1400,30);
6. INSERT INTO emp VALUES(7698,'BLAKE','MANAGER',7839,to_date('1-5-1981','dd-mm-yyyy'),2850,NULL,30);
7. INSERT INTO emp VALUES(7782,'CLARK','MANAGER',7839,to_date('9-6-1981','dd-mm-yyyy'),2450,NULL,10);
8. INSERT INTO emp VALUES(7788,'SCOTT','ANALYST',7566,to_date('19-4-87','dd-mm-yyyy'),3000,NULL,20);
9. INSERT INTO emp VALUES(7839,'KING','PRESIDENT',NULL,to_date('17-11-1981','dd-mm-yyyy'),5000,NULL,10);
10. INSERT INTO emp VALUES(7844,'TURNER','SALESMAN',7698,to_date('8-9-1981','dd-mm-yyyy'),1500,0,30);
11. INSERT INTO emp VALUES(7876,'ADAMS','CLERK',7788,to_date('23-5-87','dd-mm-yyyy'),1100,NULL,20);
12. INSERT INTO emp VALUES(7900,'JAMES','CLERK',7698,to_date('3-12-1981','dd-mm-yyyy'),950,NULL,30);
13. INSERT INTO emp VALUES(7902,'FORD','ANALYST',7566,to_date('3-12-1981','dd-mm-yyyy'),3000,NULL,20);
14. INSERT INTO emp VALUES(7934,'MILLER','CLERK',7782,to_date('23-1-1982','dd-mm-yyyy'),1300,NULL,10);