Created
June 23, 2021 15:06
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SQL4 题
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drop table if exists `dept_emp` ; | |
drop table if exists `employees` ; | |
CREATE TABLE `dept_emp` ( | |
`emp_no` int(11) NOT NULL, | |
`dept_no` char(4) NOT NULL, | |
`from_date` date NOT NULL, | |
`to_date` date NOT NULL, | |
PRIMARY KEY (`emp_no`,`dept_no`)); | |
CREATE TABLE `employees` ( | |
`emp_no` int(11) NOT NULL, | |
`birth_date` date NOT NULL, | |
`first_name` varchar(14) NOT NULL, | |
`last_name` varchar(16) NOT NULL, | |
`gender` char(1) NOT NULL, | |
`hire_date` date NOT NULL, | |
PRIMARY KEY (`emp_no`)); | |
INSERT INTO dept_emp VALUES(10001,'d001','1986-06-26','9999-01-01'); | |
INSERT INTO dept_emp VALUES(10002,'d002','1996-08-03','9999-01-01'); | |
INSERT INTO employees VALUES(10001,'1953-09-02','Georgi','Facello','M','1986-06-26'); | |
INSERT INTO employees VALUES(10002,'1964-06-02','Bezalel','Simmel','F','1985-11-21'); | |
INSERT INTO employees VALUES(10003,'1959-12-03','Parto','Bamford','M','1986-08-28'); | |
INSERT INTO employees VALUES(10004,'1954-05-01','Chirstian','Koblick','M','1986-12-01'); |
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