Oracle基础教程之手动创建 emp 表 与 dept 表

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