查找所有已经分配部门的员工的last_name和first_name

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`));

select employees.last_name ,first_name ,dept_emp.dept_no
from dept_emp inner join employees
on dept_emp.emp_no=employees.emp_no;

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原文地址：https://www.cnblogs.com/daminzhou/p/8440811.html