hive中的列转行和行转列

https://www.cnblogs.com/zzhangyuhang/p/9791795.html

https://www.cnblogs.com/blogyuhan/p/9274784.html

列转行:
user_id   order_id
104399    1715131
104399    2105395
104399    1758844
104399    981085
104399    2444143
104399    1458638
104399    968412
104400    1609001
104400    2986088
104400    1795054

把相同user_id的order_id按照逗号转为一行:select user_id,concat_ws(',',collect_list(order_id)) as order_value from col_lie group by user_id

行转列:

user_id    order_value
104408    2909888,2662805,2922438,674972,2877863,190237

select user_id,order_value,order_id
from lie_col
lateral view explode(split(order_value,',')) num as order_id
limit 10;