array_append

array_append [WhereOS, SQL, Spark, Hive]

Class hivemall.tools.array.ArrayAppendUDF
Usage array_append(array arr, T elem) - Append an element to the end of an array

SELECT array_append(array(1,2),3);
1,2,3

SELECT array_append(array('a','b'),'c');
"a","b","c"

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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