mirror of
https://github.com/ClickHouse/ClickHouse.git
synced 2024-12-15 02:41:59 +00:00
12 lines
448 B
MySQL
12 lines
448 B
MySQL
|
drop table if exists t;
|
||
|
|
drop table if exists t_buf;
|
||
|
|
|
||
|
|
create table t (x UInt64) engine = MergeTree order by (x, intHash64(x)) sample by intHash64(x);
|
||
|
|
insert into t select number from numbers(10000);
|
||
|
|
create table t_buf as t engine = Buffer(currentDatabase(), 't', 16, 20, 100, 100000, 10000000, 50000000, 250000000);
|
||
|
|
insert into t_buf values (1);
|
||
|
|
select count() from t_buf sample 1/2 format Null;
|
||
|
|
|
||
|
|
drop table if exists t_buf;
|
||
|
|
drop table if exists t;
|