zoom笔试-数据方向0810-SQL题目
员工信息表emploee_info_tb（eid员工ID，dept部门，age年龄，entry_date入职日期，last_sal_chg_dt最近一次调薪日期）
薪资变更表salary_change_tb（eid员工ID，event_date调薪日期，salary调整后薪资）
计算员工平均涨薪周期（张薪一次需要的月份数，保留3位小数）和平均每次涨薪幅度（输出成百分比的形式，只保留成整数），只需要输出有过涨薪的员工信息。结果按平均涨薪幅度降序、涨薪周期升序。
select eid, concat(floor(avg(salary_diff) * 100), '%'), round(avg(date_diff), 3) avg_sal_chg_months from ( select eid, (salary - last_salary) / last_salary salary_diff, timestampdiff(month, last_event_date, event_date) date_diff from ( select eid, salary,event_date, lag(event_date, 1, null) over(partition by eid order by event_date) last_event_date, lag(salary, 1, Null) over(partition by eid order by event_date, salary desc) last_salary from salary_change_tb right join emploee_info_tb using(eid) where entry_date <= event_date ) info_tb where last_salary is not NUll and last_event_date is not NUll ) data_tb group by eid order by avg(salary_diff) desc, avg_sal_chg_months可以过样例，提交只可以过0😂，请大佬指点。
已经找到问题，没有过滤部门😅😅😅😅😅😅
#ZOOM笔试##做完zoom2023秋招笔试，人麻了#
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