drop table if exists tp; create table tp (d1 Int32, d2 Int32, eventcnt Int64, projection p (select sum(eventcnt) group by d1)) engine = MergeTree order by (d1, d2); set optimize_use_projections = 1, force_optimize_projection = 1; select sum(eventcnt) eventcnt, d1 from tp group by d1; select avg(eventcnt) eventcnt, d1 from tp group by d1; insert into tp values (1, 2, 3); select sum(eventcnt) eventcnt, d1 from tp group by d1; select avg(eventcnt) eventcnt, d1 from tp group by d1; -- { serverError 584 } drop table tp;