我的表中有时间戳和日期列。我的日期和时间戳列是字符串类型。我需要将其转换为 DATE 和 TIMESTAMP 格式。但我数据中的格式是 2/4/2017 3:03。因此,当我将其转换为 TIMESTAMP 数据类型时,它会给出 NULL。我们可以做些什么来解决这个问题?
这是我的示例日期和时间列数据。
2/3/2017 23:37
2/3/2017 23:37
2/3/2017 23:40
2/3/2017 23:50
2/3/2017 23:51
2/3/2017 23:53
2/3/2017 23:55
2/4/2017 0:08
2/4/2017 0:57
提前致谢
最佳答案
create table mytable (dt_tm string);
insert into mytable values
('2/3/2017 23:37')
,('2/3/2017 23:37')
,('2/3/2017 23:40')
,('2/3/2017 23:50')
,('2/3/2017 23:51')
,('2/3/2017 23:53')
,('2/3/2017 23:55')
,('2/4/2017 0:08' )
,('2/4/2017 0:57' )
;
select dt_tm
,cast(from_unixtime(unix_timestamp(dt_tm,'dd/MM/yyyy HH:mm'),'yyyy-MM-dd 00:00:00') as timestamp)
from mytable
;
+----------------+---------------------+
| 2/3/2017 23:37 | 2017-03-02 00:00:00 |
| 2/3/2017 23:37 | 2017-03-02 00:00:00 |
| 2/3/2017 23:40 | 2017-03-02 00:00:00 |
| 2/3/2017 23:50 | 2017-03-02 00:00:00 |
| 2/3/2017 23:51 | 2017-03-02 00:00:00 |
| 2/3/2017 23:53 | 2017-03-02 00:00:00 |
| 2/3/2017 23:55 | 2017-03-02 00:00:00 |
| 2/4/2017 0:08 | 2017-04-02 00:00:00 |
| 2/4/2017 0:57 | 2017-04-02 00:00:00 |
| 2/3/2017 23:37 | 2017-03-02 00:00:00 |
| 2/3/2017 23:37 | 2017-03-02 00:00:00 |
| 2/3/2017 23:40 | 2017-03-02 00:00:00 |
| 2/3/2017 23:50 | 2017-03-02 00:00:00 |
| 2/3/2017 23:51 | 2017-03-02 00:00:00 |
| 2/3/2017 23:53 | 2017-03-02 00:00:00 |
| 2/3/2017 23:55 | 2017-03-02 00:00:00 |
| 2/4/2017 0:08 | 2017-04-02 00:00:00 |
| 2/4/2017 0:57 | 2017-04-02 00:00:00 |
+----------------+---------------------+
关于date - 如何在配置单元中将字符串格式转换为日期格式,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/42407077/