题解 | #统计salary的累计和#
统计salary的累计和running_total
https://www.nowcoder.com/practice/58824cd644ea47d7b2b670c506a159a6
SELECT emp_no,
salary,
SUM(salary) OVER(ORDER BY emp_no) running_total
FROM salaries
WHERE to_date = '9999-01-01'
典型的累计和开窗函数题。对薪资进行SUM，对员工号进行排序
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