ClickHouse/tests/queries/0_stateless/01592_long_window_functions1.sql

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drop table if exists stack;
set max_insert_threads = 4;
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create table stack(item_id Int64, brand_id Int64, rack_id Int64, dt DateTime, expiration_dt DateTime, quantity UInt64)
Engine = MergeTree
partition by toYYYYMM(dt)
order by (brand_id, toStartOfHour(dt));
insert into stack
select number%99991, number%11, number%1111, toDateTime('2020-01-01 00:00:00')+number/100,
toDateTime('2020-02-01 00:00:00')+number/10, intDiv(number,100)+1
from numbers_mt(10000000);
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select '---- arrays ----';
select cityHash64( toString( groupArray (tuple(*) ) )) from (
select brand_id, rack_id, arrayJoin(arraySlice(arraySort(groupArray(quantity)),1,2)) quantity
from stack
group by brand_id, rack_id
order by brand_id, rack_id, quantity
) t;
select '---- window f ----';
select cityHash64( toString( groupArray (tuple(*) ) )) from (
select brand_id, rack_id, quantity from
( select brand_id, rack_id, quantity, row_number() over (partition by brand_id, rack_id order by quantity) rn
from stack ) as t0
where rn <= 2
order by brand_id, rack_id, quantity
) t;
drop table if exists stack;