题解 | #查找所有已经分配部门的员工的last_name和first_name以及dept_no#
查找所有已经分配部门的员工的last_name和first_name以及dept_no
http://www.nowcoder.com/practice/6d35b1cd593545ab985a68cd86f28671
select e.last_name,e.first_name,d.dept_no from employees as e left join dept_emp as d on e.emp_no = d.emp_no where d.dept_no is not null;
