题解 | #统计salary的累计和running_total#
统计salary的累计和running_total
http://www.nowcoder.com/practice/58824cd644ea47d7b2b670c506a159a6
记得要给时间加限制!!!!
SELECT emp_no,salary,sum(salary) over(order by emp_no)as running_total
from salaries
WHERE to_date = '9999-01-01'