array_sum

array_sum [WhereOS, SQL, Spark, Hive]

Class hivemall.tools.array.ArraySumUDAF
Usage array_sum(array) - Returns an array in which each element is summed up

WITH input as (
select array(1.0, 2.0, 3.0) as nums
UNION ALL
select array(2.0, 3.0, 4.0) as nums
)
select
array_sum(nums)
from
input;

["3.0","5.0","7.0"]

More functions can be added to WhereOS via Python or R bindings or as Java & Scala UDF (user-defined function), UDAF (user-defined aggregation function) and UDTF (user-defined table generating function) extensions. Custom libraries can be added on via Settings-page or installed from WhereOS Store.

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