create table test_parallel_index (x UInt64, y UInt64, z UInt64, INDEX a (y) TYPE minmax GRANULARITY 2, INDEX b (z) TYPE set(8) GRANULARITY 2) engine = MergeTree order by x partition by bitAnd(x, 63 * 64) settings index_granularity = 4; insert into test_parallel_index select number, number, number from numbers(1048576); select sum(x) from test_parallel_index where toStartOfDay(toStartOfDay(toStartOfDay(toStartOfDay(toStartOfDay(toStartOfDay(toStartOfDay(toDateTime(x)))))))) in (select toDateTime(number * 8) from numbers(131072)); select sum(y) from test_parallel_index where toStartOfDay(toStartOfDay(toStartOfDay(toStartOfDay(toStartOfDay(toStartOfDay(toStartOfDay(toDateTime(y)))))))) in (select toDateTime(number * 8) from numbers(131072)); select sum(z) from test_parallel_index where z = 2 or z = 7 or z = 13 or z = 17 or z = 19 or z = 23; drop table if exists test_parallel_index;