Oracle数据库中自带的4张表： dept、emp、bonus和salgrade是练习SQL查询的经典案例表，本文提供在MySQL中建这4张表的SQL语句
1. 创建dept表
CREATE TABLE `dept`(
`deptno` INT(2) NOT NULL,
`dname` VARCHAR(14),
`loc` VARCHAR(13),
CONSTRAINT pk_dept PRIMARY KEY(deptno)
) ENGINE=InnoDB DEFAULT CHARSET=utf8;
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');
2. 创建emp表
CREATE TABLE `emp` (
`empno` int(4) NOT NULL PRIMARY KEY,
`ename` VARCHAR(10),
`job` VARCHAR(9),
`mgr` int(4),
`hiredate` DATE,
`sal` float(7,2),
`comm` float(7,2),
`deptno` int(2),
CONSTRAINT fk_deptno FOREIGN KEY(deptno) REFERENCES dept(deptno)
) ENGINE=InnoDB DEFAULT CHARSET=utf8;
INSERT INTO EMP VALUES (7369,'SMITH','CLERK',7902,'1980-12-17',800,NULL,20);
INSERT INTO EMP VALUES (7499,'ALLEN','SALESMAN',7698,'1981-02-20',1600,300,30);
INSERT INTO EMP VALUES (7521,'WARD','SALESMAN',7698,'1981-02-22',1250,500,30);
INSERT INTO EMP VALUES (7566,'JONES','MANAGER',7839,'1981-04-02',2975,NULL,20);
INSERT INTO EMP VALUES (7654,'MARTIN','SALESMAN',7698,'1981-09-28',1250,1400,30);
INSERT INTO EMP VALUES (7698,'BLAKE','MANAGER',7839,'1981-05-01',2850,NULL,30);
INSERT INTO EMP VALUES (7782,'CLARK','MANAGER',7839,'1981-06-09',2450,NULL,10);
INSERT INTO EMP VALUES (7788,'SCOTT','ANALYST',7566,'1987-07-13',3000,NULL,20);
INSERT INTO EMP VALUES (7839,'KING','PRESIDENT',NULL,'1981-11-07',5000,NULL,10);
INSERT INTO EMP VALUES (7844,'TURNER','SALESMAN',7698,'1981-09-08',1500,0,30);
INSERT INTO EMP VALUES (7876,'ADAMS','CLERK',7788,'1987-07-13',1100,NULL,20);
INSERT INTO EMP VALUES (7900,'JAMES','CLERK',7698,'1981-12-03',950,NULL,30);
INSERT INTO EMP VALUES (7902,'FORD','ANALYST',7566,'1981-12-03',3000,NULL,20);
INSERT INTO EMP VALUES (7934,'MILLER','CLERK',7782,'1982-01-23',1300,NULL,10);
3. 创建bonus表
CREATE TABLE `bonus`(
`ename` VARCHAR(10),
`job` VARCHAR(9),
`sal` INT,
`comm` INT
) ENGINE=InnoDB DEFAULT CHARSET=utf8;
4. 创建salgrade表
CREATE TABLE `salgrade` (
`grade` int,
`losal` int,
`hisal` int
) ENGINE=InnoDB DEFAULT CHARSET=utf8;
INSERT INTO SALGRADE VALUES (1,700,1200);
INSERT INTO SALGRADE VALUES (2,1201,1400);
INSERT INTO SALGRADE VALUES (3,1401,2000);
INSERT INTO SALGRADE VALUES (4,2001,3000);
INSERT INTO SALGRADE VALUES (5,3001,9999);
