说明: 有时候我们需要通用的实验数据, emp 表 与 dept 表 但是 Oracle 数据库中有没有. 这时, 我们可以手动创建.
-- 创建表与数据
- CREATE TABLE EMP
- (EMPNO NUMBER(4) NOT NULL,
- ENAME VARCHAR2(10),
- JOB VARCHAR2(9),
- MGR NUMBER(4),
- HIREDATE DATE,
- SAL NUMBER(7, 2),
- COMM NUMBER(7, 2),
- DEPTNO NUMBER(2)
- );
- INSERT INTO EMP VALUES (7369, 'SMITH', 'CLERK', 7902,
- TO_DATE('17-DEC-1980', 'DD-MON-YYYY'), 800, NULL, 20);
- INSERT INTO EMP VALUES (7499, 'ALLEN', 'SALESMAN', 7698,
- TO_DATE('20-FEB-1981', 'DD-MON-YYYY'), 1600, 300, 30);
- INSERT INTO EMP VALUES (7521, 'WARD', 'SALESMAN', 7698,
- TO_DATE('22-FEB-1981', 'DD-MON-YYYY'), 1250, 500, 30);
- INSERT INTO EMP VALUES (7566, 'JONES', 'MANAGER', 7839,
- TO_DATE('2-APR-1981', 'DD-MON-YYYY'), 2975, NULL, 20);
- INSERT INTO EMP VALUES (7654, 'MARTIN', 'SALESMAN', 7698,
- TO_DATE('28-SEP-1981', 'DD-MON-YYYY'), 1250, 1400, 30);
- INSERT INTO EMP VALUES (7698, 'BLAKE', 'MANAGER', 7839,
- TO_DATE('1-MAY-1981', 'DD-MON-YYYY'), 2850, NULL, 30);
- INSERT INTO EMP VALUES (7782, 'CLARK', 'MANAGER', 7839,
- TO_DATE('9-JUN-1981', 'DD-MON-YYYY'), 2450, NULL, 10);
- INSERT INTO EMP VALUES (7788, 'SCOTT', 'ANALYST', 7566,
- TO_DATE('09-DEC-1982', 'DD-MON-YYYY'), 3000, NULL, 20);
- INSERT INTO EMP VALUES (7839, 'KING', 'PRESIDENT', NULL,
- TO_DATE('17-NOV-1981', 'DD-MON-YYYY'), 5000, NULL, 10);
- INSERT INTO EMP VALUES (7844, 'TURNER', 'SALESMAN', 7698,
- TO_DATE('8-SEP-1981', 'DD-MON-YYYY'), 1500, 0, 30);
- INSERT INTO EMP VALUES (7876, 'ADAMS', 'CLERK', 7788,
- TO_DATE('12-JAN-1983', 'DD-MON-YYYY'), 1100, NULL, 20);
- INSERT INTO EMP VALUES (7900, 'JAMES', 'CLERK', 7698,
- TO_DATE('3-DEC-1981', 'DD-MON-YYYY'), 950, NULL, 30);
- INSERT INTO EMP VALUES (7902, 'FORD', 'ANALYST', 7566,
- TO_DATE('3-DEC-1981', 'DD-MON-YYYY'), 3000, NULL, 20);
- INSERT INTO EMP VALUES (7934, 'MILLER', 'CLERK', 7782,
- TO_DATE('23-JAN-1982', 'DD-MON-YYYY'), 1300, NULL, 10);
- CREATE TABLE DEPT
- (DEPTNO NUMBER(2),
- DNAME VARCHAR2(14),
- LOC VARCHAR2(13)
- );
- INSERT INTO DEPT VALUES (10, 'ACCOUNTING', 'NEW YORK');
- INSERT INTO DEPT VALUES (20, 'RESEARCH', 'DALLAS');
- INSERT INTO DEPT VALUES (30, 'SALES', 'CHICAGO');
- INSERT INTO DEPT VALUES (40, 'OPERATIONS', 'BOSTON');
-- 添加约束
- alter table emp add constraint emp_pk primary key(empno);
- alter table dept add constraint dept_pk primary key(deptno);
- alter table dept add constraint emp_fk_dept foreign key(deptno) references dept;
- alter table emp add constraint emp_fk_emp foreign key(mgr) references emp;
-- 查看数据
- (11G)EODA@testdb1> select * from emp;
- EMPNO ENAME JOB MGR HIREDATE SAL COMM DEPTNO
- ---------- ---------- --------- ---------- --------- ---------- ---------- ----------
- 7369 SMITH CLERK 7902 17-DEC-80 800 20
- 7499 ALLEN SALESMAN 7698 20-FEB-81 1600 300 30
- 7521 WARD SALESMAN 7698 22-FEB-81 1250 500 30
- 7566 JONES MANAGER 7839 02-APR-81 2975 20
- 7654 MARTIN SALESMAN 7698 28-SEP-81 1250 1400 30
- 7698 BLAKE MANAGER 7839 01-MAY-81 2850 30
- 7782 CLARK MANAGER 7839 09-JUN-81 2450 10
- 7788 SCOTT ANALYST 7566 09-DEC-82 3000 20
- 7839 KING PRESIDENT 17-NOV-81 5000 10
- 7844 TURNER SALESMAN 7698 08-SEP-81 1500 0 30
- 7876 ADAMS CLERK 7788 12-JAN-83 1100 20
- 7900 JAMES CLERK 7698 03-DEC-81 950 30
- 7902 FORD ANALYST 7566 03-DEC-81 3000 20
- 7934 MILLER CLERK 7782 23-JAN-82 1300 10
14 rows selected.
- (11G)EODA@testdb1> select * from dept;
- DEPTNO DNAME LOC
- ---------- -------------- -------------
- 10 ACCOUNTING NEW YORK
- 20 RESEARCH DALLAS
- 30 SALES CHICAGO
- 40 OPERATIONS BOSTON
来源: http://www.linuxidc.com/Linux/2018-08/153366.htm