Find Max value from a list in Hive

Question

I need to find max value from a list in HIVE.

For eg: If i am having values [5,4,3] in a list i need to get 5.

max(list_name) is not working. Is there any workaround.

Answer 1

It might not be the most optimized, but it kinda works.

 select max(arr) from ( select explode( array(4, 5, 1, 20, 45, 47, 9) ) as arr ) t

+------+--+
| _c0  |
+------+--+
|  47  |
+------+--+