ClickHouse/tests/queries/0_stateless/02998_primary_key_skip_columns.sql

DROP TABLE IF EXISTS test;

CREATE TABLE test (a UInt64, b UInt64, c UInt64) ENGINE = MergeTree ORDER BY (a, b, c) SETTINGS index_granularity = 1, primary_key_ratio_of_unique_prefix_values_to_skip_suffix_columns = 1;
INSERT INTO test SELECT sipHash64(number, 1), sipHash64(number, 2), sipHash64(number, 3) FROM numbers(100000);

SELECT count() FROM test;
SELECT count() FROM test WHERE a > 1849813033528774208 AND a < 4594276315503201760;
SELECT count() FROM test WHERE b > 7898976344263989848 AND b < 8040320939819153137;
SELECT count() FROM test WHERE c > 13239894303140990071 AND c < 16179795840886947236;
SELECT count() FROM test WHERE a > 1849813033528774208 AND a < 4594276315503201760 AND b > 7898976344263989848 AND b < 8040320939819153137;
SELECT count() FROM test WHERE b > 7898976344263989848 AND b < 8040320939819153137 AND c > 13239894303140990071 AND c < 16179795840886947236;
SELECT count() FROM test WHERE a > 1849813033528774208 AND a < 4594276315503201760 AND c > 13239894303140990071 AND c < 16179795840886947236;
SELECT count() FROM test WHERE a > 1849813033528774208 AND a < 4594276315503201760 AND b > 7898976344263989848 AND b < 8040320939819153137 AND c > 13239894303140990071 AND c < 16179795840886947236;

SELECT 'Key size: ', round(sum(primary_key_bytes_in_memory), -5) FROM system.parts WHERE database = currentDatabase() AND table = 'test';

ALTER TABLE test MODIFY SETTING primary_key_ratio_of_unique_prefix_values_to_skip_suffix_columns = 0.9;

DETACH TABLE test;
ATTACH TABLE test;

SELECT count() FROM test;
SELECT count() FROM test WHERE a > 1849813033528774208 AND a < 4594276315503201760;
SELECT count() FROM test WHERE b > 7898976344263989848 AND b < 8040320939819153137;
SELECT count() FROM test WHERE c > 13239894303140990071 AND c < 16179795840886947236;
SELECT count() FROM test WHERE a > 1849813033528774208 AND a < 4594276315503201760 AND b > 7898976344263989848 AND b < 8040320939819153137;
SELECT count() FROM test WHERE b > 7898976344263989848 AND b < 8040320939819153137 AND c > 13239894303140990071 AND c < 16179795840886947236;
SELECT count() FROM test WHERE a > 1849813033528774208 AND a < 4594276315503201760 AND c > 13239894303140990071 AND c < 16179795840886947236;
SELECT count() FROM test WHERE a > 1849813033528774208 AND a < 4594276315503201760 AND b > 7898976344263989848 AND b < 8040320939819153137 AND c > 13239894303140990071 AND c < 16179795840886947236;

SELECT 'Key size: ', round(sum(primary_key_bytes_in_memory), 5) FROM system.parts WHERE database = currentDatabase() AND table = 'test';

DROP TABLE test;