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