题解 | #查找在职员工自入职以来的薪水涨幅情况#
查找在职员工自入职以来的薪水涨幅情况
http://www.nowcoder.com/practice/fc7344ece7294b9e98401826b94c6ea5
入职工资连接现在工资，主要找出刚入职时候的工资，现在工资通过to_date='9999-01-01'一个条件就可以选出
select b.emp_no, salary2-salary1 as growth
from (
select emp_no, salary1 from(
select emp_no, salary salary1, rank() over(partition by emp_no order by from_date) as rank
from salaries
) a
where rank=1
)b
right join
(
select emp_no, salary salary2
from salaries where to_date = '9999-01-01'
) d
on b.emp_no = d.emp_no
order by growth asc
查看17道真题和解析