SET allow_experimental_analyzer = 1; SELECT arrayJoin([1, 2, 3]); SELECT '--'; SELECT arrayJoin([1, 2, 3]) AS a, arrayJoin([1, 2, 3]); SELECT '--'; SELECT arrayJoin([1, 2, 3]) AS a, a; SELECT '--'; SELECT arrayJoin([[1, 2, 3]]) AS a, arrayJoin(a) AS b; SELECT '--'; SELECT arrayJoin([1, 2, 3]) AS a, arrayJoin([1, 2, 3, 4]) AS b; SELECT '--'; SELECT arrayMap(x -> arrayJoin([1, 2, 3]), [1, 2, 3]); SELECT arrayMap(x -> arrayJoin(x), [[1, 2, 3]]); -- { serverError 36 } SELECT arrayMap(x -> arrayJoin(cast(x, 'Array(UInt8)')), [[1, 2, 3]]); -- { serverError 36 } SELECT '--'; SELECT arrayMap(x -> x + a, [1, 2, 3]), arrayJoin([1,2,3]) as a; SELECT '--'; DROP TABLE IF EXISTS test_table; CREATE TABLE test_table ( id UInt64, value_1 Array(UInt8), value_2 Array(UInt8), ) ENGINE=TinyLog; INSERT INTO test_table VALUES (0, [1, 2, 3], [1, 2, 3, 4]); SELECT id, arrayJoin(value_1) FROM test_table; SELECT '--'; SELECT id, arrayJoin(value_1) AS a, a FROM test_table; -- SELECT '--'; -- SELECT id, arrayJoin(value_1), arrayJoin(value_2) FROM test_table; -- SELECT '--'; -- SELECT id, arrayJoin(value_1), arrayJoin(value_2), arrayJoin([5, 6]) FROM test_table; DROP TABLE test_table;