我正在尝试编写以下代码以实现输出？
输入：
+----------------------+
| dttm |
+----------------------+
| 2014-11-18 16:23:01 |
| 2014-11-18 16:23:02 |
| 2014-11-18 16:26:14 |
| 2014-11-18 16:26:15 |
| 2014-11-18 16:26:16 |
| 2014-11-18 17:43:02 |
| 2014-11-18 17:43:03 |
| 2018-12-17 23:59:59 |
| 2018-12-18 00:00:00 |
| 2019-01-17 00:00:00 |
| 2019-01-17 00:00:01 |
+----------------------+
输出：
+----------------------+
| dttm |
+----------------------+
| 2014-11-18 16:23:01 |
| 2014-11-18 16:23:02 |
| 2014-11-18 16:26:14 |
| 2014-11-18 16:26:15 |
| 2014-11-18 16:26:16 |
| 2014-11-18 16:26:16 |
| 2014-11-18 17:43:02 |
| 2014-11-18 17:43:03 |
| 2018-12-17 23:59:59 |
| 2018-12-18 00:00:00 |
| 2019-01-17 00:00:00 |
| 2019-01-17 00:00:01 |
+----------------------+
实施逻辑：第1行和第2行的差应为1秒，第3行和第4行的差应为1秒，依此类推。
如果不是这种情况，请复制该订单项。
答案 0 :(得分：0)
尝试
select a.dttm from (
select t1.rn, t1.dttm, case when (unix_timestamp(t2.dttm) - unix_timestamp(t1.dttm) ) = 1 then '1' when (unix_timestamp(t2.dttm) - unix_timestamp(t1.dttm)) is null then '1' else '1,2' end as split_rec
from (select dttm, row_number () over () as rn from tmstmp) t1 left outer join
(select dttm, row_number () over () as rn from tmstmp) t2
on t1.rn = t2.rn-1 and pmod(t2.rn,2) =0) a
lateral view explode(split(a.split_rec , ',')) temp as td1
;
Output is :
+-----------+------------------------+--+
| temp.td1 | a.dttm |
+-----------+------------------------+--+
| 1 | 2014-11-18 16:23:01.0 |
| 1 | 2014-11-18 16:23:02.0 |
| 1 | 2019-01-17 00:00:00.0 |
| 1 | 2019-01-17 00:00:01.0 |
| 1 | 2014-11-18 16:26:14.0 |
| 1 | 2014-11-18 16:26:15.0 |
| 1 | 2014-11-18 16:26:16.0 |
| 2 | 2014-11-18 16:26:16.0 |
| 1 | 2014-11-18 16:26:16.0 |
| 1 | 2014-11-18 17:43:02.0 |
| 1 | 2014-11-18 17:43:03.0 |
| 1 | 2018-12-17 23:59:59.0 |
| 1 | 2018-12-18 00:00:00.0 |
+-----------+------------------------+--+