题解
查找当前薪水详情以及部门编号dept_no
http://www.nowcoder.com/questionTerminal/c63c5b54d86e4c6d880e4834bfd70c3b
题目描述不准备，但是猜测是这个意思
select a.emp_no,b.salary,b.from_date,b.to_date,a.dept_no from dept_manager a, salaries b where a.emp_no=b.emp_no
and a.to_date='9999-01-01' and b.to_date='9999-01-01'
order by b.emp_no