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SQLite ORDER BY RANDOM() Randomosity Tester

+1 data
+1 +10 +100 +1K +10K +MAX
range: 1-100, data points: 10,001, groups: 36
High / Low / Range / Average
Frequency: 123 / 80 / 43 / 100.01
Rows: 8 / 1 / 7 / 2.78
Frequency
Rows
123
2
122
1
121
1
118
1
116
1
115
1
114
1
113
1
112
1
110
3
109
1
108
4
107
4
106
1
105
3
104
2
103
8
102
5
101
7
100
7
99
6
98
3
97
2
96
3
95
6
94
2
93
1
92
2
91
3
90
5
89
4
88
2
86
1
85
1
84
1
80
3

Test runs: 1Avg run : 0.000154 seconds Test time: 0.000154 seconds Data Save: 0.018104 seconds Test Tools: Restart test: Random range 1 to: 1 2 3 4 5 10 50 100 500 1K 5K 10K 50K 100K Random Generator Method: SQLite ORDER BY RANDOM() PHP rand() PHP mt_rand() PHP random_int() Back to top

About the Randomosity Tester

This page tests the frequency distribution and timing of random number generation via these methods:

Random number results are stored in a test table. The test table is defined as:

CREATE TABLE 'test' ( 'id' INTEGER PRIMARY KEY, 'frequency' INTEGER DEFAULT '0' );

The table is initialized by creating all rows with frequency = 0. The number of rows in the table is defined by the range setting. The current test is set to use range: 1 to 100.

For each random number chosen, the table is updated via:

UPDATE test SET frequency = frequency + 1 WHERE id = :random_number

For SQLite tests, results are individually generated via the SQL call:

SELECT id FROM test ORDER BY RANDOM() LIMIT 1;

Generate more random numbers by clicking a  +  number button to start a test run.

Each test run is limted to ~1.42 seconds.

A Frequency of Frequencies chart displays:

This site was created with Open Source software. Find out more on Github: randomosity-tester v0.2.2

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