3 1 0 source_trivial_cluster default trivial destination_trivial_cluster default trivial ENGINE=ReplicatedMergeTree('/clickhouse/tables/cluster{cluster}/{shard}/hits', '{replica}') PARTITION BY d % 5 ORDER BY (d, sipHash64(d)) SAMPLE BY sipHash64(d) SETTINGS index_granularity = 16 d + 1 d - d = 0 first_trivial 9000 second_trivial 9000