ClickHouse/dbms/tests/queries/0_stateless/00276_sample.sql

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 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 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
UNION ALL SELECT x FROM test.sample SAMPLE 0.1 OFFSET 0.2
UNION ALL SELECT x FROM test.sample SAMPLE 0.1 OFFSET 0.3
UNION ALL SELECT x FROM test.sample SAMPLE 0.1 OFFSET 0.4
UNION ALL SELECT x FROM test.sample SAMPLE 0.1 OFFSET 0.5
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
);

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 
(
    SELECT 
        x, 
        count() AS c
    FROM 
    (
                  SELECT * FROM test.sample SAMPLE 0.01 OFFSET 0.00
        UNION ALL SELECT * FROM test.sample SAMPLE 0.01 OFFSET 0.01
	UNION ALL SELECT * FROM test.sample SAMPLE 0.01 OFFSET 0.02
	UNION ALL SELECT * FROM test.sample SAMPLE 0.01 OFFSET 0.03
	UNION ALL SELECT * FROM test.sample SAMPLE 0.01 OFFSET 0.04
	UNION ALL SELECT * FROM test.sample SAMPLE 0.01 OFFSET 0.05
	UNION ALL SELECT * FROM test.sample SAMPLE 0.01 OFFSET 0.06
	UNION ALL SELECT * FROM test.sample SAMPLE 0.01 OFFSET 0.07
	UNION ALL SELECT * FROM test.sample SAMPLE 0.01 OFFSET 0.08
	UNION ALL SELECT * FROM test.sample SAMPLE 0.01 OFFSET 0.09
        UNION ALL SELECT * FROM test.sample SAMPLE 0.01 OFFSET 0.10
        UNION ALL SELECT * FROM test.sample SAMPLE 0.01 OFFSET 0.11
	UNION ALL SELECT * FROM test.sample SAMPLE 0.01 OFFSET 0.12
	UNION ALL SELECT * FROM test.sample SAMPLE 0.01 OFFSET 0.13
	UNION ALL SELECT * FROM test.sample SAMPLE 0.01 OFFSET 0.14
	UNION ALL SELECT * FROM test.sample SAMPLE 0.01 OFFSET 0.15
	UNION ALL SELECT * FROM test.sample SAMPLE 0.01 OFFSET 0.16
	UNION ALL SELECT * FROM test.sample SAMPLE 0.01 OFFSET 0.17
	UNION ALL SELECT * FROM test.sample SAMPLE 0.01 OFFSET 0.18
	UNION ALL SELECT * FROM test.sample SAMPLE 0.01 OFFSET 0.19
	UNION ALL SELECT * FROM test.sample SAMPLE 0.01 OFFSET 0.20
        UNION ALL SELECT * FROM test.sample SAMPLE 0.01 OFFSET 0.21
	UNION ALL SELECT * FROM test.sample SAMPLE 0.01 OFFSET 0.22
	UNION ALL SELECT * FROM test.sample SAMPLE 0.01 OFFSET 0.23
	UNION ALL SELECT * FROM test.sample SAMPLE 0.01 OFFSET 0.24
	UNION ALL SELECT * FROM test.sample SAMPLE 0.01 OFFSET 0.25
	UNION ALL SELECT * FROM test.sample SAMPLE 0.01 OFFSET 0.26
	UNION ALL SELECT * FROM test.sample SAMPLE 0.01 OFFSET 0.27
	UNION ALL SELECT * FROM test.sample SAMPLE 0.01 OFFSET 0.28
	UNION ALL SELECT * FROM test.sample SAMPLE 0.01 OFFSET 0.29
	UNION ALL SELECT * FROM test.sample SAMPLE 0.01 OFFSET 0.30
        UNION ALL SELECT * FROM test.sample SAMPLE 0.01 OFFSET 0.31
	UNION ALL SELECT * FROM test.sample SAMPLE 0.01 OFFSET 0.32
	UNION ALL SELECT * FROM test.sample SAMPLE 0.01 OFFSET 0.33
	UNION ALL SELECT * FROM test.sample SAMPLE 0.01 OFFSET 0.34
	UNION ALL SELECT * FROM test.sample SAMPLE 0.01 OFFSET 0.35
	UNION ALL SELECT * FROM test.sample SAMPLE 0.01 OFFSET 0.36
	UNION ALL SELECT * FROM test.sample SAMPLE 0.01 OFFSET 0.37
	UNION ALL SELECT * FROM test.sample SAMPLE 0.01 OFFSET 0.38
	UNION ALL SELECT * FROM test.sample SAMPLE 0.01 OFFSET 0.39
	UNION ALL SELECT * FROM test.sample SAMPLE 0.01 OFFSET 0.40
        UNION ALL SELECT * FROM test.sample SAMPLE 0.01 OFFSET 0.41
	UNION ALL SELECT * FROM test.sample SAMPLE 0.01 OFFSET 0.42
	UNION ALL SELECT * FROM test.sample SAMPLE 0.01 OFFSET 0.43
	UNION ALL SELECT * FROM test.sample SAMPLE 0.01 OFFSET 0.44
	UNION ALL SELECT * FROM test.sample SAMPLE 0.01 OFFSET 0.45
	UNION ALL SELECT * FROM test.sample SAMPLE 0.01 OFFSET 0.46
	UNION ALL SELECT * FROM test.sample SAMPLE 0.01 OFFSET 0.47
	UNION ALL SELECT * FROM test.sample SAMPLE 0.01 OFFSET 0.48
	UNION ALL SELECT * FROM test.sample SAMPLE 0.01 OFFSET 0.49
	UNION ALL SELECT * FROM test.sample SAMPLE 0.01 OFFSET 0.50
        UNION ALL SELECT * FROM test.sample SAMPLE 0.01 OFFSET 0.51
	UNION ALL SELECT * FROM test.sample SAMPLE 0.01 OFFSET 0.52
	UNION ALL SELECT * FROM test.sample SAMPLE 0.01 OFFSET 0.53
	UNION ALL SELECT * FROM test.sample SAMPLE 0.01 OFFSET 0.54
	UNION ALL SELECT * FROM test.sample SAMPLE 0.01 OFFSET 0.55
	UNION ALL SELECT * FROM test.sample SAMPLE 0.01 OFFSET 0.56
	UNION ALL SELECT * FROM test.sample SAMPLE 0.01 OFFSET 0.57
	UNION ALL SELECT * FROM test.sample SAMPLE 0.01 OFFSET 0.58
	UNION ALL SELECT * FROM test.sample SAMPLE 0.01 OFFSET 0.59
	UNION ALL SELECT * FROM test.sample SAMPLE 0.01 OFFSET 0.60
        UNION ALL SELECT * FROM test.sample SAMPLE 0.01 OFFSET 0.61
	UNION ALL SELECT * FROM test.sample SAMPLE 0.01 OFFSET 0.62
	UNION ALL SELECT * FROM test.sample SAMPLE 0.01 OFFSET 0.63
	UNION ALL SELECT * FROM test.sample SAMPLE 0.01 OFFSET 0.64
	UNION ALL SELECT * FROM test.sample SAMPLE 0.01 OFFSET 0.65
	UNION ALL SELECT * FROM test.sample SAMPLE 0.01 OFFSET 0.66
	UNION ALL SELECT * FROM test.sample SAMPLE 0.01 OFFSET 0.67
	UNION ALL SELECT * FROM test.sample SAMPLE 0.01 OFFSET 0.68
	UNION ALL SELECT * FROM test.sample SAMPLE 0.01 OFFSET 0.69
	UNION ALL SELECT * FROM test.sample SAMPLE 0.01 OFFSET 0.70
        UNION ALL SELECT * FROM test.sample SAMPLE 0.01 OFFSET 0.71
	UNION ALL SELECT * FROM test.sample SAMPLE 0.01 OFFSET 0.72
	UNION ALL SELECT * FROM test.sample SAMPLE 0.01 OFFSET 0.73
	UNION ALL SELECT * FROM test.sample SAMPLE 0.01 OFFSET 0.74
	UNION ALL SELECT * FROM test.sample SAMPLE 0.01 OFFSET 0.75
	UNION ALL SELECT * FROM test.sample SAMPLE 0.01 OFFSET 0.76
	UNION ALL SELECT * FROM test.sample SAMPLE 0.01 OFFSET 0.77
	UNION ALL SELECT * FROM test.sample SAMPLE 0.01 OFFSET 0.78
	UNION ALL SELECT * FROM test.sample SAMPLE 0.01 OFFSET 0.79
	UNION ALL SELECT * FROM test.sample SAMPLE 0.01 OFFSET 0.80
        UNION ALL SELECT * FROM test.sample SAMPLE 0.01 OFFSET 0.81
	UNION ALL SELECT * FROM test.sample SAMPLE 0.01 OFFSET 0.82
	UNION ALL SELECT * FROM test.sample SAMPLE 0.01 OFFSET 0.83
	UNION ALL SELECT * FROM test.sample SAMPLE 0.01 OFFSET 0.84
	UNION ALL SELECT * FROM test.sample SAMPLE 0.01 OFFSET 0.85
	UNION ALL SELECT * FROM test.sample SAMPLE 0.01 OFFSET 0.86
	UNION ALL SELECT * FROM test.sample SAMPLE 0.01 OFFSET 0.87
	UNION ALL SELECT * FROM test.sample SAMPLE 0.01 OFFSET 0.88
	UNION ALL SELECT * FROM test.sample SAMPLE 0.01 OFFSET 0.89
	UNION ALL SELECT * FROM test.sample SAMPLE 0.01 OFFSET 0.90
        UNION ALL SELECT * FROM test.sample SAMPLE 0.01 OFFSET 0.91
	UNION ALL SELECT * FROM test.sample SAMPLE 0.01 OFFSET 0.92
	UNION ALL SELECT * FROM test.sample SAMPLE 0.01 OFFSET 0.93
	UNION ALL SELECT * FROM test.sample SAMPLE 0.01 OFFSET 0.94
	UNION ALL SELECT * FROM test.sample SAMPLE 0.01 OFFSET 0.95
	UNION ALL SELECT * FROM test.sample SAMPLE 0.01 OFFSET 0.96
	UNION ALL SELECT * FROM test.sample SAMPLE 0.01 OFFSET 0.97
	UNION ALL SELECT * FROM test.sample SAMPLE 0.01 OFFSET 0.98
	UNION ALL SELECT * FROM test.sample SAMPLE 0.01 OFFSET 0.99
    )
    GROUP BY x
    HAVING c = 1
    ORDER BY x ASC
);

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;

SELECT count()
FROM 
(
    SELECT 
        x, 
        count() AS c
    FROM 
    (
                  SELECT * FROM test.sample SAMPLE 0.01 OFFSET 0.00
        UNION ALL SELECT * FROM test.sample SAMPLE 0.01 OFFSET 0.01
	UNION ALL SELECT * FROM test.sample SAMPLE 0.01 OFFSET 0.02
	UNION ALL SELECT * FROM test.sample SAMPLE 0.01 OFFSET 0.03
	UNION ALL SELECT * FROM test.sample SAMPLE 0.01 OFFSET 0.04
	UNION ALL SELECT * FROM test.sample SAMPLE 0.01 OFFSET 0.05
	UNION ALL SELECT * FROM test.sample SAMPLE 0.01 OFFSET 0.06
	UNION ALL SELECT * FROM test.sample SAMPLE 0.01 OFFSET 0.07
	UNION ALL SELECT * FROM test.sample SAMPLE 0.01 OFFSET 0.08
	UNION ALL SELECT * FROM test.sample SAMPLE 0.01 OFFSET 0.09
        UNION ALL SELECT * FROM test.sample SAMPLE 0.01 OFFSET 0.10
        UNION ALL SELECT * FROM test.sample SAMPLE 0.01 OFFSET 0.11
	UNION ALL SELECT * FROM test.sample SAMPLE 0.01 OFFSET 0.12
	UNION ALL SELECT * FROM test.sample SAMPLE 0.01 OFFSET 0.13
	UNION ALL SELECT * FROM test.sample SAMPLE 0.01 OFFSET 0.14
	UNION ALL SELECT * FROM test.sample SAMPLE 0.01 OFFSET 0.15
	UNION ALL SELECT * FROM test.sample SAMPLE 0.01 OFFSET 0.16
	UNION ALL SELECT * FROM test.sample SAMPLE 0.01 OFFSET 0.17
	UNION ALL SELECT * FROM test.sample SAMPLE 0.01 OFFSET 0.18
	UNION ALL SELECT * FROM test.sample SAMPLE 0.01 OFFSET 0.19
	UNION ALL SELECT * FROM test.sample SAMPLE 0.01 OFFSET 0.20
        UNION ALL SELECT * FROM test.sample SAMPLE 0.01 OFFSET 0.21
	UNION ALL SELECT * FROM test.sample SAMPLE 0.01 OFFSET 0.22
	UNION ALL SELECT * FROM test.sample SAMPLE 0.01 OFFSET 0.23
	UNION ALL SELECT * FROM test.sample SAMPLE 0.01 OFFSET 0.24
	UNION ALL SELECT * FROM test.sample SAMPLE 0.01 OFFSET 0.25
	UNION ALL SELECT * FROM test.sample SAMPLE 0.01 OFFSET 0.26
	UNION ALL SELECT * FROM test.sample SAMPLE 0.01 OFFSET 0.27
	UNION ALL SELECT * FROM test.sample SAMPLE 0.01 OFFSET 0.28
	UNION ALL SELECT * FROM test.sample SAMPLE 0.01 OFFSET 0.29
	UNION ALL SELECT * FROM test.sample SAMPLE 0.01 OFFSET 0.30
        UNION ALL SELECT * FROM test.sample SAMPLE 0.01 OFFSET 0.31
	UNION ALL SELECT * FROM test.sample SAMPLE 0.01 OFFSET 0.32
	UNION ALL SELECT * FROM test.sample SAMPLE 0.01 OFFSET 0.33
	UNION ALL SELECT * FROM test.sample SAMPLE 0.01 OFFSET 0.34
	UNION ALL SELECT * FROM test.sample SAMPLE 0.01 OFFSET 0.35
	UNION ALL SELECT * FROM test.sample SAMPLE 0.01 OFFSET 0.36
	UNION ALL SELECT * FROM test.sample SAMPLE 0.01 OFFSET 0.37
	UNION ALL SELECT * FROM test.sample SAMPLE 0.01 OFFSET 0.38
	UNION ALL SELECT * FROM test.sample SAMPLE 0.01 OFFSET 0.39
	UNION ALL SELECT * FROM test.sample SAMPLE 0.01 OFFSET 0.40
        UNION ALL SELECT * FROM test.sample SAMPLE 0.01 OFFSET 0.41
	UNION ALL SELECT * FROM test.sample SAMPLE 0.01 OFFSET 0.42
	UNION ALL SELECT * FROM test.sample SAMPLE 0.01 OFFSET 0.43
	UNION ALL SELECT * FROM test.sample SAMPLE 0.01 OFFSET 0.44
	UNION ALL SELECT * FROM test.sample SAMPLE 0.01 OFFSET 0.45
	UNION ALL SELECT * FROM test.sample SAMPLE 0.01 OFFSET 0.46
	UNION ALL SELECT * FROM test.sample SAMPLE 0.01 OFFSET 0.47
	UNION ALL SELECT * FROM test.sample SAMPLE 0.01 OFFSET 0.48
	UNION ALL SELECT * FROM test.sample SAMPLE 0.01 OFFSET 0.49
	UNION ALL SELECT * FROM test.sample SAMPLE 0.01 OFFSET 0.50
        UNION ALL SELECT * FROM test.sample SAMPLE 0.01 OFFSET 0.51
	UNION ALL SELECT * FROM test.sample SAMPLE 0.01 OFFSET 0.52
	UNION ALL SELECT * FROM test.sample SAMPLE 0.01 OFFSET 0.53
	UNION ALL SELECT * FROM test.sample SAMPLE 0.01 OFFSET 0.54
	UNION ALL SELECT * FROM test.sample SAMPLE 0.01 OFFSET 0.55
	UNION ALL SELECT * FROM test.sample SAMPLE 0.01 OFFSET 0.56
	UNION ALL SELECT * FROM test.sample SAMPLE 0.01 OFFSET 0.57
	UNION ALL SELECT * FROM test.sample SAMPLE 0.01 OFFSET 0.58
	UNION ALL SELECT * FROM test.sample SAMPLE 0.01 OFFSET 0.59
	UNION ALL SELECT * FROM test.sample SAMPLE 0.01 OFFSET 0.60
        UNION ALL SELECT * FROM test.sample SAMPLE 0.01 OFFSET 0.61
	UNION ALL SELECT * FROM test.sample SAMPLE 0.01 OFFSET 0.62
	UNION ALL SELECT * FROM test.sample SAMPLE 0.01 OFFSET 0.63
	UNION ALL SELECT * FROM test.sample SAMPLE 0.01 OFFSET 0.64
	UNION ALL SELECT * FROM test.sample SAMPLE 0.01 OFFSET 0.65
	UNION ALL SELECT * FROM test.sample SAMPLE 0.01 OFFSET 0.66
	UNION ALL SELECT * FROM test.sample SAMPLE 0.01 OFFSET 0.67
	UNION ALL SELECT * FROM test.sample SAMPLE 0.01 OFFSET 0.68
	UNION ALL SELECT * FROM test.sample SAMPLE 0.01 OFFSET 0.69
	UNION ALL SELECT * FROM test.sample SAMPLE 0.01 OFFSET 0.70
        UNION ALL SELECT * FROM test.sample SAMPLE 0.01 OFFSET 0.71
	UNION ALL SELECT * FROM test.sample SAMPLE 0.01 OFFSET 0.72
	UNION ALL SELECT * FROM test.sample SAMPLE 0.01 OFFSET 0.73
	UNION ALL SELECT * FROM test.sample SAMPLE 0.01 OFFSET 0.74
	UNION ALL SELECT * FROM test.sample SAMPLE 0.01 OFFSET 0.75
	UNION ALL SELECT * FROM test.sample SAMPLE 0.01 OFFSET 0.76
	UNION ALL SELECT * FROM test.sample SAMPLE 0.01 OFFSET 0.77
	UNION ALL SELECT * FROM test.sample SAMPLE 0.01 OFFSET 0.78
	UNION ALL SELECT * FROM test.sample SAMPLE 0.01 OFFSET 0.79
	UNION ALL SELECT * FROM test.sample SAMPLE 0.01 OFFSET 0.80
        UNION ALL SELECT * FROM test.sample SAMPLE 0.01 OFFSET 0.81
	UNION ALL SELECT * FROM test.sample SAMPLE 0.01 OFFSET 0.82
	UNION ALL SELECT * FROM test.sample SAMPLE 0.01 OFFSET 0.83
	UNION ALL SELECT * FROM test.sample SAMPLE 0.01 OFFSET 0.84
	UNION ALL SELECT * FROM test.sample SAMPLE 0.01 OFFSET 0.85
	UNION ALL SELECT * FROM test.sample SAMPLE 0.01 OFFSET 0.86
	UNION ALL SELECT * FROM test.sample SAMPLE 0.01 OFFSET 0.87
	UNION ALL SELECT * FROM test.sample SAMPLE 0.01 OFFSET 0.88
	UNION ALL SELECT * FROM test.sample SAMPLE 0.01 OFFSET 0.89
	UNION ALL SELECT * FROM test.sample SAMPLE 0.01 OFFSET 0.90
        UNION ALL SELECT * FROM test.sample SAMPLE 0.01 OFFSET 0.91
	UNION ALL SELECT * FROM test.sample SAMPLE 0.01 OFFSET 0.92
	UNION ALL SELECT * FROM test.sample SAMPLE 0.01 OFFSET 0.93
	UNION ALL SELECT * FROM test.sample SAMPLE 0.01 OFFSET 0.94
	UNION ALL SELECT * FROM test.sample SAMPLE 0.01 OFFSET 0.95
	UNION ALL SELECT * FROM test.sample SAMPLE 0.01 OFFSET 0.96
	UNION ALL SELECT * FROM test.sample SAMPLE 0.01 OFFSET 0.97
	UNION ALL SELECT * FROM test.sample SAMPLE 0.01 OFFSET 0.98
	UNION ALL SELECT * FROM test.sample SAMPLE 0.01 OFFSET 0.99
    )
    GROUP BY x
    HAVING c = 1
    ORDER BY x ASC
);

DROP TABLE test.sample;