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
https://www.nowcoder.com/practice/fc7344ece7294b9e98401826b94c6ea5
SELECT
emp_no,
end_sal - start_sal AS growth # 工资差
FROM(
SELECT
e.emp_no,
salary AS start_sal, # 入职工资
end_sal # 当前工资
FROM employees e
JOIN salaries s
ON e.emp_no = s.emp_no AND e.hire_date = s.from_date # 入职工资条件
JOIN(
SELECT
emp_no,
from_date,
salary AS end_sal # 当前工资表
FROM salaries
WHERE to_date = '9999-01-01' # 在职条件
) AS tb1
ON tb1.emp_no = e.emp_no
) AS tb2
ORDER BY growth ASC # 升序条件
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