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85 lines
1.9 KiB
Plaintext
85 lines
1.9 KiB
Plaintext
-- { echo }
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set allow_experimental_window_functions = 1;
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select row_number() over (order by dummy) from (select * from remote('127.0.0.{1,2}', system, one));
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1
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2
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select row_number() over (order by dummy) from remote('127.0.0.{1,2}', system, one);
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1
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2
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select max(identity(dummy + 1)) over () from remote('127.0.0.{1,2}', system, one);
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1
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1
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drop table if exists t_01568;
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create table t_01568 engine Memory as
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select intDiv(number, 3) p, modulo(number, 3) o, number
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from numbers(9);
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select sum(number) over w, max(number) over w from t_01568 window w as (partition by p);
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3 2
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3 2
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3 2
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12 5
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12 5
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12 5
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21 8
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21 8
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21 8
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select sum(number) over w, max(number) over w from remote('127.0.0.{1,2}', '', t_01568) window w as (partition by p);
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6 2
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6 2
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6 2
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6 2
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6 2
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6 2
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24 5
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24 5
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24 5
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24 5
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24 5
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24 5
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42 8
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42 8
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42 8
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42 8
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42 8
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42 8
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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);
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6 2
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24 5
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42 8
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-- window functions + aggregation w/shards
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select groupArray(groupArray(number)) over (rows unbounded preceding) from remote('127.0.0.{1,2}', '', t_01568) group by mod(number, 3);
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[[0,3,6,0,3,6]]
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[[0,3,6,0,3,6],[1,4,7,1,4,7]]
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[[0,3,6,0,3,6],[1,4,7,1,4,7],[2,5,8,2,5,8]]
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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;
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[[0,3,6]]
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[[0,3,6],[1,4,7]]
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[[0,3,6],[1,4,7],[2,5,8]]
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[[0,3,6]]
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[[0,3,6],[1,4,7]]
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[[0,3,6],[1,4,7],[2,5,8]]
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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 }
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-- proper ORDER BY w/window functions
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select p, o, count() over (partition by p)
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from remote('127.0.0.{1,2}', '', t_01568)
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order by p, o;
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0 0 6
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0 0 6
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0 1 6
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0 1 6
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0 2 6
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0 2 6
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1 0 6
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1 0 6
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1 1 6
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1 1 6
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1 2 6
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1 2 6
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2 0 6
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2 0 6
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2 1 6
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2 1 6
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2 2 6
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2 2 6
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drop table t_01568;
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