mirror of
https://github.com/ClickHouse/ClickHouse.git
synced 2024-12-12 17:32:32 +00:00
20 lines
678 B
SQL
20 lines
678 B
SQL
-- Tags: long, no-parallel
|
|
|
|
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;
|