题解 | 统计salary的累计和running_total
select emp_no
,salary
,sum(salary)over(order by emp_no) running_total
from(select emp_no
,sum(salary) salary
from salaries
where to_date = "9999-01-01"
group by emp_no) t
select emp_no
,salary
,sum(salary)over(order by emp_no) running_total
from(select emp_no
,sum(salary) salary
from salaries
where to_date = "9999-01-01"
group by emp_no) t
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