[英]Split single row columns into multiple columns in Hive
I have a Hive table like this 我有一个像这样的Hive桌子
ID1 Name1 ID2 Name2 ID3 Name3....
1 ABC 2 MNP 3 XYZ
11 LMP 12 PLL 13 UIP
This table may have any no. 该表可能没有任何编号。 of columns pair(ie ID and Name)
列对(即ID和名称)的对
I need to convert the above table into a new Hive table having only 2 columns ID and Name like below 我需要将上面的表转换为只有2列ID和Name的新Hive表,如下所示
ID Name
1 ABC
2 MNP
3 XYZ
11 LMP
12 PLL
13 UIP
Please suggest how can I achieve this in Hive. 请提出如何在Hive中实现这一目标。
Thanks 谢谢
select explode(map(*)) as (id,name)
from mytable
;
+----+------+
| id | name |
+----+------+
| 1 | ABC |
| 2 | MNP |
| 3 | XYZ |
| 11 | LMP |
| 12 | PLL |
| 13 | UIP |
+----+------+
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