What is the purpose of the MySQL rand() function?

The RAND() function in MySQL is used to generate a random number between 0 and 1 (including 0 but not including 1). When no parameters are passed to the RAND() function, each call will return a new random number.

The RAND() function is commonly used in queries that require a random ordering of result sets or the random selection of rows. For example, you can use the RAND() function in the ORDER BY clause to randomly sort the result set, or in the WHERE clause to randomly select rows.