How can the absolute value be represented in MySQL?

In MySQL, you can use the ABS() function to calculate the absolute value of a number. This function takes one parameter and returns the absolute value of that parameter.

Here is an example demonstrating the use of the ABS() function to show absolute value:

SELECT ABS(-10); -- 返回 10

In the example above, we used the ABS() function to calculate the absolute value of -10 and retrieved the result through a query. You can replace -10 with any other number to get its absolute value.

Please note that in practical use, you can use the ABS() function together with other expressions to calculate the absolute value of any expression as needed.