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Cover distributed_group_by_no_merge on GROUP BY injective function of sharding key

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This commit is contained in:
Azat Khuzhin 2020-04-17 10:40:12 +03:00
parent abbeb13cf0
commit 6f76f2791d
2 changed files with 105 additions and 0 deletions
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50
tests/queries/0_stateless/01247_distributed_group_by_no_merge_GROUP_BY_injective_sharding_key.reference Normal file
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-
0
1
0
1
optimize_skip_unused_shards
0
1
0
1
GROUP BY number
1 0
1 1
1 0
1 1
GROUP BY number, 1
1 0
1 1
1 0
1 1
GROUP BY 1
4 0
GROUP BY number ORDER BY number DESC
2 1
2 0
GROUP BY toString(number)
1 0
1 1
1 0
1 1
GROUP BY number%2
2 0
2 1
countDistinct
2
countDistinct GROUP BY number
1
1
1
1
DISTINCT
0
1
HAVING
LIMIT
2 0
2 1
LIMIT BY
2 0
2 1

55
tests/queries/0_stateless/01247_distributed_group_by_no_merge_GROUP_BY_injective_sharding_key.sql Normal file
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drop table if exists dist_01247;
drop table if exists data_01247;
create table data_01247 as system.numbers engine=Memory();
insert into data_01247 select * from system.numbers limit 2;
create table dist_01247 as data_01247 engine=Distributed(test_cluster_two_shards, currentDatabase(), data_01247, number);
-- since data is not inserted via distributed it will have duplicates
-- (and this is how we ensure that this optimization will work)
set max_distributed_connections=1;
select '-';
select * from dist_01247;
select 'optimize_skip_unused_shards';
set optimize_skip_unused_shards=1;
select * from dist_01247;
select 'GROUP BY number';
select count(), * from dist_01247 group by number;
-- dumb, but should work, since "GROUP BY 1" optimized out
select 'GROUP BY number, 1';
select count(), * from dist_01247 group by number, 1;
select 'GROUP BY 1';
select count(), min(number) from dist_01247 group by 1;
select 'GROUP BY number ORDER BY number DESC';
select count(), * from dist_01247 group by number order by number desc;
select 'GROUP BY toString(number)';
select count(), * from dist_01247 group by toString(number);
select 'GROUP BY number%2';
select count(), any(number) from dist_01247 group by number%2;
select 'countDistinct';
select count(DISTINCT number) from dist_01247;
select 'countDistinct GROUP BY number';
select count(DISTINCT number) from dist_01247 group by number;
select 'DISTINCT';
select DISTINCT number from dist_01247;
select 'HAVING';
select count() cnt, * from dist_01247 group by number having cnt < 0;
select 'LIMIT';
select count(), * from dist_01247 group by number limit 1;
select count(), * from dist_01247 group by number limit 1 offset 1;
select 'LIMIT BY';
select count(), * from dist_01247 group by number limit 0 by number;
select count(), * from dist_01247 group by number limit 1 by number;