To calculate the square root of a number in SQL, use the SQRT() function. This function takes a single argument, which is the number whose square root you want to calculate. For example, if you wanted to calculate the square root of 16, you would use the following query:

## Examples

Let's look at a few examples of how this function can be used. Suppose you have a table called numbers with the following data:

If you wanted to calculate the square root of each number in this table, you would use the following query:

This query would return the result 2, 3, 4, 5, since these are the square roots of the numbers in the table.

## Additional Info

The SQRT() function is supported by most major databases, including MySQL, PostgreSQL, and SQL Server. However, the syntax may vary slightly depending on the database you are using. For more information, check out the documentation for your particular database.