CREATE DATABASE IF NOT EXISTS test; DROP TABLE IF EXISTS test.big_array; CREATE TABLE test.big_array (x Array(UInt8)) ENGINE=TinyLog; SET min_insert_block_size_rows = 0, min_insert_block_size_bytes = 0; INSERT INTO test.big_array SELECT groupArray(number % 255) AS x FROM (SELECT * FROM system.numbers LIMIT 1000000); SELECT sum(y) AS s FROM remote('127.0.0.{1,2}', test, big_array) ARRAY JOIN x AS y;