ql/src/test/queries/clientpositive/udf_array.q

--! qt:dataset:src
set hive.fetch.task.conversion=more;

DESCRIBE FUNCTION array;
DESCRIBE FUNCTION EXTENDED array;

EXPLAIN SELECT array(), array()[1], array(1, 2, 3), array(1, 2, 3)[2], array(1,"a", 2, 3), array(1,"a", 2, 3)[2],
array(array(1), array(2), array(3), array(4))[1][0] FROM src tablesample (1 rows);

SELECT array(), array()[1], array(1, 2, 3), array(1, 2, 3)[2], array(1,"a", 2, 3), array(1,"a", 2, 3)[2],
array(array(1), array(2), array(3), array(4))[1][0] FROM src tablesample (1 rows);