with courier_daily_stats as( -- 第一步:计算每个骑手近7天的基础指标 select a.courier_id, courier_name, city, # if (day(a.shipped_ts) >= (day(max(a.shipped_ts) - 7)),1,0) as in_dateRange, if(timestampdiff(minute, a.shipped_ts, a.delivered_ts) <= a.promised_minutes, 1, 0) AS is_on_time, timestampdiff(minute, a.s...