1024 1 20G 1 collapsing collapsing_final_16p_ord collapsing_final_16p_rnd collapsing_final_16p_int_keys_ord collapsing_final_16p_int_keys_rnd collapsing_final_16p_str_keys_ord collapsing_final_16p_str_keys_rnd collapsing_final_1024p_ord collapsing_final_1024p_rnd collapsing_final_1p_ord create table collapsing_final_16p_ord (key1 UInt32, key2 String, sign Int8, s UInt64) engine = CollapsingMergeTree(sign) order by (key1, key2) partition by intDiv(key1, 8192 * 64) create table collapsing_final_16p_rnd (key1 UInt32, key2 String, sign Int8, s UInt64) engine = CollapsingMergeTree(sign) order by (key1, key2) partition by key1 % 16 create table collapsing_final_16p_int_keys_ord (key1 UInt32, key2 UInt32, key3 UInt32, key4 UInt32, key5 UInt32, key6 UInt32, key7 UInt32, key8 UInt32, sign Int8, s UInt64) engine = CollapsingMergeTree(sign) order by (key1, key2, key3, key4, key5, key6, key7, key8) partition by intDiv(key1, 8192 * 64) create table collapsing_final_16p_int_keys_rnd (key1 UInt32, key2 UInt32, key3 UInt32, key4 UInt32, key5 UInt32, key6 UInt32, key7 UInt32, key8 UInt32, sign Int8, s UInt64) engine = CollapsingMergeTree(sign) order by (key1, key2, key3, key4, key5, key6, key7, key8) partition by key1 % 16 create table collapsing_final_16p_str_keys_ord (key1 UInt32, key2 String, key3 String, key4 String, key5 String, key6 String, key7 String, key8 String, sign Int8, s UInt64) engine = CollapsingMergeTree(sign) order by (key1, key2, key3, key4, key5, key6, key7, key8) partition by intDiv(key1, 8192 * 64) create table collapsing_final_16p_str_keys_rnd (key1 UInt32, key2 String, key3 String, key4 String, key5 String, key6 String, key7 String, key8 String, sign Int8, s UInt64) engine = CollapsingMergeTree(sign) order by (key1, key2, key3, key4, key5, key6, key7, key8) partition by key1 % 16 create table collapsing_final_1024p_ord (key1 UInt32, sign Int8, s UInt64) engine = CollapsingMergeTree(sign) order by (key1) partition by intDiv(key1, 8192 * 2) create table collapsing_final_1024p_rnd (key1 UInt32, sign Int8, s UInt64) engine = CollapsingMergeTree(sign) order by (key1) partition by key1 % 1024 create table collapsing_final_1p_ord (key1 UInt64, key2 UInt64, sign Int8, s UInt64) engine = CollapsingMergeTree(sign) order by (key1, key2) insert into collapsing_final_16p_ord select number, number, 1, number from numbers_mt(8388608) insert into collapsing_final_16p_rnd select sipHash64(number), number, 1, number from numbers_mt(8388608) insert into collapsing_final_16p_int_keys_ord select number, number, number, number, number, number, number, number, 1, number from numbers_mt(8388608) insert into collapsing_final_16p_int_keys_rnd select sipHash64(number), number, number, number, number, number, number, number, 1, number from numbers_mt(8388608) insert into collapsing_final_16p_str_keys_ord select number, number, number, number, number, number, number, number, 1, number from numbers_mt(8388608) insert into collapsing_final_16p_str_keys_rnd select sipHash64(number), number, number, number, number, number, number, number, 1, number from numbers_mt(8388608) insert into collapsing_final_1024p_ord select number, 1, number from numbers_mt(16777216) insert into collapsing_final_1024p_rnd select number, 1, number from numbers_mt(16777216) insert into collapsing_final_1p_ord select number, number + 1, 1, number from numbers_mt(5e7) optimize table {collapsing} final SELECT count() FROM {collapsing} final SELECT sum(s) FROM {collapsing} final group by key1 limit 10 SELECT sum(s) FROM {collapsing} final group by key1 % 8192 limit 10 DROP TABLE IF EXISTS {collapsing}