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dbms: addition to prev. revision [#METR-18847].

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This commit is contained in:
Alexey Milovidov 2015-11-20 05:29:16 +03:00
parent 2d8457418f
commit 4318712300
3 changed files with 64 additions and 828 deletions
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7
dbms/src/Storages/MergeTree/MergeTreeDataSelectExecutor.cpp
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@ -269,6 +269,9 @@ BlockInputStreams MergeTreeDataSelectExecutor::read(
if (settings.parallel_replicas_count > 1)
{
if (relative_sample_size == 0)
relative_sample_size = 1;
relative_sample_size /= settings.parallel_replicas_count;
relative_sample_offset += relative_sample_size * settings.parallel_replica_offset;
}
@ -295,8 +298,8 @@ BlockInputStreams MergeTreeDataSelectExecutor::read(
/* std::cerr << std::fixed << std::setprecision(100)
<< "relative_sample_size: " << relative_sample_size << "\n"
<< "relative_sample_offset: " << relative_sample_offset << "\n"
<< "lower_limit_float: " << lower_limit_float << "\n"
<< "upper_limit_float: " << upper_limit_float << "\n"
<< "lower_limit_float: " << lower_limit_rational << "\n"
<< "upper_limit_float: " << upper_limit_rational << "\n"
<< "lower: " << lower << "\n"
<< "upper: " << upper << "\n";*/

843
dbms/tests/queries/0_stateless/00276_sample.reference
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42
dbms/tests/queries/0_stateless/00276_sample.sql
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@ -1,13 +1,39 @@
DROP TABLE IF EXISTS test.sample;
SET max_block_size = 10;
CREATE TABLE test.sample (d Date DEFAULT '2000-01-01', x UInt8) ENGINE = MergeTree(d, x, x, 10);
INSERT INTO test.sample (x) SELECT toUInt8(number) AS x FROM system.numbers LIMIT 256;
SELECT x FROM test.sample;
SELECT x FROM test.sample SAMPLE 1;
SELECT x FROM test.sample SAMPLE 0.1;
SELECT count(), min(x), max(x), sum(x), uniqExact(x) FROM test.sample;
SELECT count(), min(x), max(x), sum(x), uniqExact(x) FROM test.sample SAMPLE 1;
SELECT count(), min(x), max(x), sum(x), uniqExact(x) FROM test.sample SAMPLE 0.1;
SELECT count(), min(x), max(x), sum(x), uniqExact(x) FROM test.sample SAMPLE 1/10;
SELECT count(), min(x), max(x), sum(x), uniqExact(x) FROM test.sample SAMPLE 1/1e1;
SELECT count(), min(x), max(x), sum(x), uniqExact(x) FROM test.sample SAMPLE 1e1/1e2;
SELECT count(), min(x), max(x), sum(x), uniqExact(x) FROM test.sample SAMPLE 1e-1;
SELECT count(), min(x), max(x), sum(x), uniqExact(x) FROM test.sample SAMPLE 2e-2;
SELECT count(), min(x), max(x), sum(x), uniqExact(x) FROM test.sample SAMPLE 1/10 OFFSET 1/10;
SELECT count(), min(x), max(x), sum(x), uniqExact(x) FROM test.sample SAMPLE 1/10 OFFSET 9/10;
SELECT count(), min(x), max(x), sum(x), uniqExact(x) FROM test.sample SAMPLE 1/10 OFFSET 10/10;
SELECT count(), min(x), max(x), sum(x), uniqExact(x) FROM test.sample SAMPLE 1/10 OFFSET 19/20;
SELECT x FROM
SELECT count() >= 100 FROM test.sample SAMPLE 100;
SELECT count(), min(x), max(x), sum(x), uniqExact(x) FROM test.sample SAMPLE 1000;
SELECT count(), min(x), max(x), sum(x), uniqExact(x) FROM test.sample SAMPLE 1/2;
SELECT count(), min(x), max(x), sum(x), uniqExact(x) FROM test.sample SAMPLE 1/2 OFFSET 1/2;
SELECT count(), min(x), max(x), sum(x), uniqExact(x) FROM test.sample SAMPLE 1/2 SETTINGS parallel_replicas_count = 3;
SELECT count(), min(x), max(x), sum(x), uniqExact(x) FROM test.sample SAMPLE 1/2 SETTINGS parallel_replicas_count = 3, parallel_replica_offset = 0;
SELECT count(), min(x), max(x), sum(x), uniqExact(x) FROM test.sample SAMPLE 1/2 SETTINGS parallel_replicas_count = 3, parallel_replica_offset = 1;
SELECT count(), min(x), max(x), sum(x), uniqExact(x) FROM test.sample SAMPLE 1/2 SETTINGS parallel_replicas_count = 3, parallel_replica_offset = 2;
SELECT count(), min(x), max(x), sum(x), uniqExact(x) FROM test.sample SAMPLE 1/2 OFFSET 1/2 SETTINGS parallel_replicas_count = 3;
SELECT count(), min(x), max(x), sum(x), uniqExact(x) FROM test.sample SAMPLE 1/2 OFFSET 1/2 SETTINGS parallel_replicas_count = 3, parallel_replica_offset = 0;
SELECT count(), min(x), max(x), sum(x), uniqExact(x) FROM test.sample SAMPLE 1/2 OFFSET 1/2 SETTINGS parallel_replicas_count = 3, parallel_replica_offset = 1;
SELECT count(), min(x), max(x), sum(x), uniqExact(x) FROM test.sample SAMPLE 1/2 OFFSET 1/2 SETTINGS parallel_replicas_count = 3, parallel_replica_offset = 2;
SELECT count(), min(x), max(x), sum(x), uniqExact(x) FROM
(
SELECT x FROM test.sample SAMPLE 0.1 OFFSET 0.0
UNION ALL SELECT x FROM test.sample SAMPLE 0.1 OFFSET 0.1
@ -19,11 +45,10 @@ UNION ALL SELECT x FROM test.sample SAMPLE 0.1 OFFSET 0.6
UNION ALL SELECT x FROM test.sample SAMPLE 0.1 OFFSET 0.7
UNION ALL SELECT x FROM test.sample SAMPLE 0.1 OFFSET 0.8
UNION ALL SELECT x FROM test.sample SAMPLE 0.1 OFFSET 0.9
)
ORDER BY x;
);
SELECT x FROM test.sample SAMPLE 0.05 OFFSET 0.35;
SELECT x FROM test.sample SAMPLE 0.05 OFFSET 0.4;
SELECT count(), min(x), max(x), sum(x), uniqExact(x) FROM test.sample SAMPLE 0.05 OFFSET 0.35;
SELECT count(), min(x), max(x), sum(x), uniqExact(x) FROM test.sample SAMPLE 0.05 OFFSET 0.4;
SELECT count()
FROM
@ -141,6 +166,7 @@ FROM
DROP TABLE test.sample;
SET max_block_size = 8192;
CREATE TABLE test.sample (d Date DEFAULT '2000-01-01', x UInt16) ENGINE = MergeTree(d, x, x, 10);
INSERT INTO test.sample (x) SELECT toUInt16(number) AS x FROM system.numbers LIMIT 65536;