SUM（）

Question

我有这个表：

的TripDrivingDuration列是一个字符串类型的专栏中，我试图将字符串转换为时间，然后使之和，但没有按”工作。

谁能帮助我？

Answer 1

这是否适合您？

WITH DATA as(
select 29 as VehicleId, '2017-01-02T 15:57:063000' as TripDateTime, '00:00:28' as TripDrivingDuration union all 
select 29 as VehicleId, '2017-01-02T 13:23:12' as TripDateTime, '00:00:21' as TripDrivingDuration union all 
select 29 as VehicleId, '2017-01-02T 17:23:05.063000' as TripDateTime, '00:07:11.9370000' as TripDrivingDuration union all 
select 29 as VehicleId, '2017-01-02T 14:59:44.063000' as TripDateTime, '00:08:19.9370000' as TripDrivingDuration union all 
select 29 as VehicleId, '2017-01-02T 15:45:44.063000' as TripDateTime, '00:01:22.9370000' as TripDrivingDuration union all 
select 29 as VehicleId, '2017-01-02T 15:17:58.063000' as TripDateTime, '00:03:29.9370000' as TripDrivingDuration union all 
select 29 as VehicleId, '2017-01-02T 18:52:15' as TripDateTime, '00:01:26' as TripDrivingDuration union all 
select 29 as VehicleId, '2017-01-02T 17:05:24.063000' as TripDateTime, '00:13:09.9370000' as TripDrivingDuration 
) 

SELECT 
    VehicleId, 
    SUM(UNIX_SECONDS(PARSE_TIMESTAMP('%H:%M:%S', REGEXP_EXTRACT(TripDrivingDuration, r'(.*)\.\d+')))) elapsed_time 
FROM data 
GROUP BY VehicleId