ClickHouse/tests/queries/0_stateless/03008_uniq_exact_equal_ranges.sql

DROP TABLE IF EXISTS t_uniq_exact;

CREATE TABLE t_uniq_exact (a UInt64, b String, c UInt64) ENGINE = MergeTree ORDER BY a;

SET group_by_two_level_threshold_bytes = 1;
SET group_by_two_level_threshold = 1;
SET max_threads = 4;
SET max_bytes_before_external_group_by = 0;
SET optimize_aggregation_in_order = 0;

INSERT INTO t_uniq_exact SELECT 0, randomPrintableASCII(5), rand() FROM numbers(300000);
INSERT INTO t_uniq_exact SELECT 1, randomPrintableASCII(5), rand() FROM numbers(300000);
INSERT INTO t_uniq_exact SELECT 2, randomPrintableASCII(5), rand() FROM numbers(300000);
INSERT INTO t_uniq_exact SELECT 3, randomPrintableASCII(5), rand() FROM numbers(300000);
INSERT INTO t_uniq_exact SELECT 4, randomPrintableASCII(5), rand() FROM numbers(300000);
INSERT INTO t_uniq_exact SELECT 5, randomPrintableASCII(5), rand() FROM numbers(300000);
INSERT INTO t_uniq_exact SELECT 6, randomPrintableASCII(5), rand() FROM numbers(300000);
INSERT INTO t_uniq_exact SELECT 7, randomPrintableASCII(5), rand() FROM numbers(300000);
INSERT INTO t_uniq_exact SELECT 8, randomPrintableASCII(5), rand() FROM numbers(300000);
INSERT INTO t_uniq_exact SELECT 9, randomPrintableASCII(5), rand() FROM numbers(300000);

OPTIMIZE TABLE t_uniq_exact FINAL;

SELECT a, uniqExact(b) FROM t_uniq_exact GROUP BY a ORDER BY a
SETTINGS min_hit_rate_to_use_consecutive_keys_optimization = 1.0
EXCEPT
SELECT a, uniqExact(b) FROM t_uniq_exact GROUP BY a ORDER BY a
SETTINGS min_hit_rate_to_use_consecutive_keys_optimization = 0.5;

SELECT a, sum(c) FROM t_uniq_exact GROUP BY a ORDER BY a
SETTINGS min_hit_rate_to_use_consecutive_keys_optimization = 1.0
EXCEPT
SELECT a, sum(c) FROM t_uniq_exact GROUP BY a ORDER BY a
SETTINGS min_hit_rate_to_use_consecutive_keys_optimization = 0.5;

DROP TABLE t_uniq_exact;