If the string length is one, then you'll simply get a bunch of 1's and 0's in the output. In the options of this tool, you can specify how many binary digits you need in each binary string and how many results you need. You can feed binary data of random length into a signal processor and test if it works correctly when it encounters unexpected random input. So make your life simpler by generating the random strings directly in the database. These strings always need to be stored in the database. Another use is signal processing, where 1 indicates a high and 0 indicates a low. You often need to generate random strings, like for login cookies and unique entry codes. Let us see an example and create a table mysql> create table DemoTable ( Number int ) Query OK, 0 rows affected (0. Generating monotonically increasing INT IDs by using transactions with roundtrip SELECT s, e.g., INSERT INTO tbl (id, ) VALUES ((SELECT max(id)+1 FROM tbl), ). If your application needs to randomly selects a certain number of items from a pool of items, then if you create a random binary number, then the positions of all 1's can be used to "pick the item" and all 0's can be used as "don't pick the item". To update column with random value, you can use the below syntax update yourTableName set yourColumnName round (1+rand ()100) The above syntax will generate a value between 1 to 100. Another interesting use case is combinatorics. For example, if your webapp accepts only 0's or 1's as input, then you can write a unit test that runs through binary numbers of various lengths and makes sure the app doesn't accidentally accept other numbers as input. For Small-Medium Tables If you want to create a small-medium sized table with random information in it, you can use the following query to create an empty table first. SELECT FLOOR (60 + (RAND () 61)) SELECT FLOOR (MINValue + (RAND () (MAXValue - MINValue) + 1). The following can bit a bit ambiguous simply because the 61 is actually your max value (120) minus your min value (60) + 1 to get inclusive results. A random binary string generator can be useful if you're doing cross-browser testing. How to Populate MySQL Table with Random Data We will look at a couple of ways to populate MySQL table with random data. Here is how to get the random number in a range.
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