mirror of
https://github.com/ClickHouse/ClickHouse.git
synced 2024-09-20 16:50:48 +00:00
47 lines
1.4 KiB
SQL
47 lines
1.4 KiB
SQL
drop table if exists data_01256;
|
|
drop table if exists buffer_01256;
|
|
|
|
create table data_01256 as system.numbers Engine=Memory();
|
|
|
|
select 'min';
|
|
create table buffer_01256 as system.numbers Engine=Buffer(currentDatabase(), data_01256, 1,
|
|
2, 100, /* time */
|
|
4, 100, /* rows */
|
|
1, 1e6 /* bytes */
|
|
);
|
|
insert into buffer_01256 select * from system.numbers limit 5;
|
|
select count() from data_01256;
|
|
-- sleep 2 (min time) + 1 (round up) + bias (1) = 4
|
|
select sleepEachRow(2) from numbers(2) FORMAT Null;
|
|
select count() from data_01256;
|
|
drop table buffer_01256;
|
|
|
|
select 'max';
|
|
create table buffer_01256 as system.numbers Engine=Buffer(currentDatabase(), data_01256, 1,
|
|
100, 2, /* time */
|
|
0, 100, /* rows */
|
|
0, 1e6 /* bytes */
|
|
);
|
|
insert into buffer_01256 select * from system.numbers limit 5;
|
|
select count() from data_01256;
|
|
-- sleep 2 (min time) + 1 (round up) + bias (1) = 4
|
|
select sleepEachRow(2) from numbers(2) FORMAT Null;
|
|
select count() from data_01256;
|
|
drop table buffer_01256;
|
|
|
|
select 'direct';
|
|
create table buffer_01256 as system.numbers Engine=Buffer(currentDatabase(), data_01256, 1,
|
|
100, 100, /* time */
|
|
0, 9, /* rows */
|
|
0, 1e6 /* bytes */
|
|
);
|
|
insert into buffer_01256 select * from system.numbers limit 10;
|
|
select count() from data_01256;
|
|
|
|
select 'drop';
|
|
insert into buffer_01256 select * from system.numbers limit 10;
|
|
drop table if exists buffer_01256;
|
|
select count() from data_01256;
|
|
|
|
drop table data_01256;
|