ClickHouse/tests/queries/0_stateless/01710_projection_vertical_merges.sql

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2021-09-25 08:16:33 +00:00
-- Tags: long, no-parallel
2021-09-24 13:57:44 +00:00
drop table if exists t;
create table t (c1 Int64, c2 String, c3 DateTime, c4 Int8, c5 String, c6 String, c7 String, c8 String, c9 String, c10 String, c11 String, c12 String, c13 Int8, c14 Int64, c15 String, c16 String, c17 String, c18 Int64, c19 Int64, c20 Int64) engine MergeTree order by c18;
insert into t (c1, c18) select number, -number from numbers(2000000);
alter table t add projection p_norm (select * order by c1);
optimize table t final;
alter table t materialize projection p_norm settings mutations_sync = 1;
set allow_experimental_projection_optimization = 1, max_rows_to_read = 3;
select c18 from t where c1 < 0;
drop table t;