ClickHouse/tests/queries/0_stateless/01568_window_functions_distributed.sql
2021-08-04 17:45:32 +03:00

31 lines
1.4 KiB
SQL

-- { echo }
select row_number() over (order by dummy) from (select * from remote('127.0.0.{1,2}', system, one));
select row_number() over (order by dummy) from remote('127.0.0.{1,2}', system, one);
select max(identity(dummy + 1)) over () from remote('127.0.0.{1,2}', system, one);
drop table if exists t_01568;
create table t_01568 engine Memory as
select intDiv(number, 3) p, modulo(number, 3) o, number
from numbers(9);
select sum(number) over w, max(number) over w from t_01568 window w as (partition by p);
select sum(number) over w, max(number) over w from remote('127.0.0.{1,2}', '', t_01568) window w as (partition by p);
select distinct sum(number) over w, max(number) over w from remote('127.0.0.{1,2}', '', t_01568) window w as (partition by p);
-- window functions + aggregation w/shards
select groupArray(groupArray(number)) over (rows unbounded preceding) from remote('127.0.0.{1,2}', '', t_01568) group by mod(number, 3);
select groupArray(groupArray(number)) over (rows unbounded preceding) from remote('127.0.0.{1,2}', '', t_01568) group by mod(number, 3) settings distributed_group_by_no_merge=1;
select groupArray(groupArray(number)) over (rows unbounded preceding) from remote('127.0.0.{1,2}', '', t_01568) group by mod(number, 3) settings distributed_group_by_no_merge=2; -- { serverError 48 }
-- proper ORDER BY w/window functions
select p, o, count() over (partition by p)
from remote('127.0.0.{1,2}', '', t_01568)
order by p, o;
drop table t_01568;