新增员工表emp和部门表dept
create table dept (dept1 int ,dept_name varchar(11)) charset=utf8;
create table emp (sid int ,name varchar(11),age int,worktime_start date,incoming int,dept2 int) charset=utf8;
insert into dept values
(101,'财务'),
(102,'销售'),
(103,'IT技术'),
(104,'行政');
insert into emp values
(1789,'张三',35,'1980/1/1',4000,101),
(1674,'李四',32,'1983/4/1',3500,101),
(1776,'王五',24,'1990/7/1',2000,101),
(1568,'赵六',57,'1970/10/11',7500,102),
(1564,'荣七',64,'1963/10/11',8500,102),
(1879,'牛八',55,'1971/10/20',7300,103),
(1668, '钱九', 64, '1963/5/4', 8000, 102),
(1724, '武十', 22, '2023/5/8', 1500, 103),
(1770, '孙二', 65, '1986/8/12', 9500, 101),
(18400, '苟一', 65, '1986/8/12', 1500, 101);