mirror of
https://github.com/ClickHouse/ClickHouse.git
synced 2024-12-15 02:41:59 +00:00
74 lines
2.1 KiB
SQL
74 lines
2.1 KiB
SQL
SELECT '1'; -- simple test
|
|
SELECT round(quantileDD(0.01, 0.5)(number), 2) FROM numbers(200);
|
|
SELECT round(quantileDD(0.0001, 0.69)(number), 2) FROM numbers(500);
|
|
SELECT round(quantileDD(0.003, 0.42)(number), 2) FROM numbers(200);
|
|
SELECT round(quantileDD(0.02, 0.99)(number), 2) FROM numbers(500);
|
|
|
|
SELECT '2'; -- median is close to 0
|
|
SELECT round(quantileDD(0.01, 0.5)(number), 2)
|
|
FROM
|
|
(
|
|
SELECT arrayJoin([toInt64(number), number - 10]) AS number
|
|
FROM numbers(0, 10)
|
|
);
|
|
SELECT round(quantileDD(0.01, 0.5)(number - 10), 2) FROM numbers(21);
|
|
|
|
SELECT '3'; -- all values are negative
|
|
SELECT round(quantileDD(0.01, 0.99)(-number), 2) FROM numbers(1, 500);
|
|
|
|
SELECT '4'; -- min and max values of integer types (-2^63, 2^63-1)
|
|
SELECT round(quantileDD(0.01, 0.5)(number), 2)
|
|
FROM
|
|
(
|
|
SELECT arrayJoin([toInt64(number), number - 9223372036854775808, toInt64(number + 9223372036854775798)]) AS number
|
|
FROM numbers(0, 10)
|
|
);
|
|
|
|
SELECT '5'; -- min and max values of floating point types
|
|
SELECT round(quantileDD(0.01, 0.42)(number), 2)
|
|
FROM
|
|
(
|
|
SELECT arrayJoin([toFloat32(number), number - 3.4028235e+38, toFloat32(number + 3.4028235e+38)]) AS number
|
|
FROM numbers(0, 10)
|
|
);
|
|
|
|
SELECT '6'; -- denormalized floats
|
|
SELECT round(quantileDD(0.01, 0.69)(number), 2)
|
|
FROM
|
|
(
|
|
SELECT arrayJoin([toFloat32(number), number - 1.1754944e-38, toFloat32(number + 1.1754944e-38)]) AS number
|
|
FROM numbers(0, 10)
|
|
);
|
|
|
|
SELECT '7'; -- NaNs
|
|
SELECT round(quantileDD(0.01, 0.5)(number), 2)
|
|
FROM
|
|
(
|
|
SELECT arrayJoin([toFloat32(number), NaN * number]) AS number
|
|
FROM numbers(0, 10)
|
|
);
|
|
|
|
SELECT '8'; -- sparse sketch
|
|
|
|
SELECT round(quantileDD(0.01, 0.75)(number), 2)
|
|
FROM
|
|
(
|
|
SELECT number * 1e7 AS number
|
|
FROM numbers(20)
|
|
);
|
|
|
|
SELECT '9'; -- ser/deser
|
|
|
|
DROP TABLE IF EXISTS `02919_ddsketch_quantile`;
|
|
|
|
CREATE TABLE `02919_ddsketch_quantile`
|
|
ENGINE = Log AS
|
|
SELECT quantilesDDState(0.001, 0.9)(number) AS sketch
|
|
FROM numbers(1000);
|
|
|
|
INSERT INTO `02919_ddsketch_quantile` SELECT quantilesDDState(0.001, 0.9)(number + 1000)
|
|
FROM numbers(1000);
|
|
|
|
SELECT arrayMap(a -> round(a, 2), (quantilesDDMerge(0.001, 0.9)(sketch)))
|
|
FROM `02919_ddsketch_quantile`;
|