...hire_date) AS dept_min, MAX(salary) OVER (PARTITION BY department_id order by hire_date) AS dept_max, AVG...(salary) OVER (PARTITION BY department_id order by hire_date) AS dept_avg, SUM(salary) OVER (PARTITION 58410 Hive窗口函数01-SUM、MIN、MAX、AVG...
假设您的数据库中有以下两个表: department(dpID:PK,.,avg_salary)employee(eID:PK,.,dpID:FK REF部门,工资) (PK =主键,FK =外键) 因此,每个员工都有一个工资和一个部门,每个部门都应该存储员工的平均工资(而不仅仅是在视图中)。当然,数据库中应该有某种更新规则,因此当插入新员工时,员工部门的avg_salar...
2) A method IncreaseSalary has been defined. It ac Write a Java program that uses a two-dimensional array to store the highest and lowest temperatures for each month of the year. Write two methods: one to calculate and return the average high and...
...hire_date) AS dept_min, MAX(salary) OVER (PARTITION BY department_id order by hire_date) AS dept_max, AVG...(salary) OVER (PARTITION BY department_id order by hire_date) AS dept_avg, SUM(salary) OVER (PARTITION 58410 Hive窗口函数01-SUM、MIN、MAX、AVG...