1 1 8 hits_100m_single CREATE TABLE perf_avg( num UInt64, num_u Decimal256(75) MATERIALIZED toDecimal256(num / 400000, 75), num_f Float64 MATERIALIZED num / 100 ) ENGINE = MergeTree() ORDER BY num INSERT INTO perf_avg(num) SELECT toUInt64(UserID / (WatchID + 1) * 1000000) FROM hits_100m_single LIMIT 50000000 optimize table perf_avg final SELECT avg(num) FROM perf_avg FORMAT Null SELECT avg(2 * num) FROM perf_avg FORMAT Null SELECT avg(num_u) FROM perf_avg FORMAT Null SELECT avg(num_f) FROM perf_avg FORMAT Null SELECT avgWeighted(num_f, num) FROM perf_avg FORMAT Null SELECT avgWeighted(num_f, num_f) FROM perf_avg FORMAT Null SELECT avgWeighted(num_f, num_u) FROM perf_avg FORMAT Null SELECT avgWeighted(num_u, num_f) FROM perf_avg FORMAT Null SELECT avgWeighted(num_u, num) FROM perf_avg FORMAT Null SELECT avgWeighted(num_u, num_u) FROM perf_avg FORMAT Null DROP TABLE IF EXISTS perf_avg