SQL 转置时间戳

Question

我想问一下，如何输出如下：

Date        NIP     Clock_in    Clock_out
24/03/2020  15017   8:00:02     18:27:12
24/03/2020  H8137   8:08:01     14:22:50

来自如下数据：

NIP     TimeStamps
15017   2020-03-24 08:00:02.550
15017   2020-03-24 08:01:00.117
15017   2020-03-24 08:05:30.440
15017   2020-03-24 08:05:37.397
15017   2020-03-24 08:06:25.160
H8137   2020-03-24 08:08:01.537
15017   2020-03-24 10:41:15.500
H8137   2020-03-24 11:40:37.327
H8137   2020-03-24 11:41:43.750
H8137   2020-03-24 13:25:01.000
H8137   2020-03-24 14:11:26.000
H8137   2020-03-24 14:11:39.000
H8137   2020-03-24 14:22:50.000
15017   2020-03-24 18:26:10.000
15017   2020-03-24 18:26:16.000
15017   2020-03-24 18:26:46.000
15017   2020-03-24 18:26:51.000
15017   2020-03-24 18:27:06.000
15017   2020-03-24 18:27:12.000

根据规则，'Clock_in' 是最早的，'Clock_out' 是 'Timestamps' 组中的最新一组 'NIP'

Answer 1

如果您使用的是 SQL 服务器，您可以确保 Cast 和分组依据。

with cte as (
select '15017' as NIP, '2020-03-24 08:00:02.550' as TimeStamps union all 
select '15017' as NIP, '2020-03-24 08:01:00.117' as TimeStamps union all 
select '15017' as NIP, '2020-03-24 08:05:30.440' as TimeStamps union all 
select '15017' as NIP, '2020-03-24 08:05:37.397' as TimeStamps union all 
select '15017' as NIP, '2020-03-24 08:06:25.160' as TimeStamps union all 
select 'H8137' as NIP, '2020-03-24 08:08:01.537' as TimeStamps union all 
select '15017' as NIP, '2020-03-24 10:41:15.500' as TimeStamps union all 
select 'H8137' as NIP, '2020-03-24 11:40:37.327' as TimeStamps union all 
select 'H8137' as NIP, '2020-03-24 11:41:43.750' as TimeStamps union all 
select 'H8137' as NIP, '2020-03-24 13:25:01.000' as TimeStamps union all 
select 'H8137' as NIP, '2020-03-24 14:11:26.000' as TimeStamps union all 
select 'H8137' as NIP, '2020-03-24 14:11:39.000' as TimeStamps union all 
select 'H8137' as NIP, '2020-03-24 14:22:50.000' as TimeStamps union all 
select '15017' as NIP, '2020-03-24 18:26:10.000' as TimeStamps union all 
select '15017' as NIP, '2020-03-24 18:26:16.000' as TimeStamps union all 
select '15017' as NIP, '2020-03-24 18:26:46.000' as TimeStamps union all 
select '15017' as NIP, '2020-03-24 18:26:51.000' as TimeStamps union all 
select '15017' as NIP, '2020-03-24 18:27:06.000' as TimeStamps union all 
select '15017' as NIP, '2020-03-24 18:27:12.000' as TimeStamps  ) 

select  cast(TimeStamps as date) Date , NIP, min(cast (TimeStamps as time)) Clock_in,  max(cast (TimeStamps as time)) Clock_out  from cte
group by cast(TimeStamps as date)  , NIP;

输出：

SQL 转置时间戳

SQL Transpose for timestamps

sql

sql-server

transpose