将一行复制一定次数，然后每次将 30 分钟添加到时间戳（如序列）

Question

示例数据：

ID      Location Type   Trip End            Number of periods
1298    Residential     02/01/2022 05:30    48
1298    Residential     03/01/2022 05:30    6
1244    Commercial      31/12/2021 09:00    2
1244    Residential     31/12/2021 10:30    1

基本上，我想根据 'number of periods.' 列中的数字复制该行。另外，为每个新的复制行添加 30 分钟。所以新的第二行是：

1298    Residential     02/01/2022 06:00    48

Answer 1

所以这在雪花中使用 table generator (which have a fixed input) combined with ROW_NUMBER and then using DATEADD

解决了

我更改了 48 -> 8 以使输出不那么难看。

WITH data(ID, LocationType, TripEnd, NumPeriods) as (
    select COLUMN1, COLUMN2, TO_TIMESTAMP_NTZ(COLUMN3, 'dd/mm/yyyy hh:mi'), COLUMN4 from values
        (1298, 'Residential','02/01/2022 05:30',8),
        (1298, 'Residential','03/01/2022 05:30',6),
        (1244, 'Commercial','31/12/2021 09:00',2),
        (1244, 'Residential','31/12/2021 10:30',1) 
), set_of_nums as (
    SELECT row_number() over (order by null)-1 as rn
    FROM table(generator(ROWCOUNT => 1000))
)
select d.*
    ,dateadd(minute, 30 * s.rn, TripEnd) as range_time
FROM DATA as d
JOIN set_of_nums as s ON d.NumPeriods >= s.rn
ORDER BY 1,3,5
;

给出：

ID	LOCATIONTYPE	TRIPEND	NUMPERIODS	RANGE_TIME
1244	Commercial	2021-12-31 09:00:00.000	2	2021-12-31 09:00:00.000
1244	Commercial	2021-12-31 09:00:00.000	2	2021-12-31 09:30:00.000
1244	Commercial	2021-12-31 09:00:00.000	2	2021-12-31 10:00:00.000
1244	Residential	2021-12-31 10:30:00.000	1	2021-12-31 10:30:00.000
1244	Residential	2021-12-31 10:30:00.000	1	2021-12-31 11:00:00.000
1298	Residential	2022-01-02 05:30:00.000	8	2022-01-02 05:30:00.000
1298	Residential	2022-01-02 05:30:00.000	8	2022-01-02 06:00:00.000
1298	Residential	2022-01-02 05:30:00.000	8	2022-01-02 06:30:00.000
1298	Residential	2022-01-02 05:30:00.000	8	2022-01-02 07:00:00.000
1298	Residential	2022-01-02 05:30:00.000	8	2022-01-02 07:30:00.000
1298	Residential	2022-01-02 05:30:00.000	8	2022-01-02 08:00:00.000
1298	Residential	2022-01-02 05:30:00.000	8	2022-01-02 08:30:00.000
1298	Residential	2022-01-02 05:30:00.000	8	2022-01-02 09:00:00.000
1298	Residential	2022-01-02 05:30:00.000	8	2022-01-02 09:30:00.000
1298	Residential	2022-01-03 05:30:00.000	6	2022-01-03 05:30:00.000
1298	Residential	2022-01-03 05:30:00.000	6	2022-01-03 06:00:00.000
1298	Residential	2022-01-03 05:30:00.000	6	2022-01-03 06:30:00.000
1298	Residential	2022-01-03 05:30:00.000	6	2022-01-03 07:00:00.000
1298	Residential	2022-01-03 05:30:00.000	6	2022-01-03 07:30:00.000
1298	Residential	2022-01-03 05:30:00.000	6	2022-01-03 08:00:00.000
1298	Residential	2022-01-03 05:30:00.000	6	2022-01-03 08:30:00.000

将一行复制一定次数，然后每次将 30 分钟添加到时间戳（如序列）

Duplicating a row a certain number of times and then adding 30 mins to a timestamp each time (like a sequence)

sql

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