SQL Random Number Generation Guide

The method of generating random numbers in SQL depends on the database management system (DBMS) being used. Here are some common methods for generating random numbers in various database systems:

1. MySQL: Use the RAND() function to generate random numbers. For example, to generate a random number between 1 and 10, you can use the following query:

SELECT FLOOR(RAND() * 10) + 1;

1. SQL Server: Generate a unique identifier using the NEWID() function, and generate a random number using the CHECKSUM() function. For example, to generate a random number between 1 and 10, you can use the following query:

SELECT ABS(CHECKSUM(NEWID())) % 10 + 1;

1. PostgreSQL utilizes the RANDOM() function to generate random numbers. For example, to generate a random number between 1 and 10, you can use the following query.

SELECT FLOOR(random() * 10) + 1;

1. Oracle: Generate a random number using the DBMS_RANDOM.VALUE function. For example, to generate a random number between 1 and 10, you can use the following query:

SELECT TRUNC(DBMS_RANDOM.VALUE(1, 10)) FROM DUAL;

Please note that the generated random numbers may not be truly random, but pseudo-random, as they are generated based on specific algorithms.