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Reviewing SQL and numbers
So you think you can count
Round and other functions
21. Function abs()
Review and practice

## Instruction

Nice! Of course, SQL features numerical functions other than rounding too. Let's take a look at two of them.

The first one is abs(x) and it returns the absolute value of x. Positive numbers will be expressed as they are, but negative ones will be expressed without the minus at the beginning.

SELECT abs(3), abs(-3);

The above query will return 3 twice. The absolute value of 3 is 3, just like the absolute value of -3. Let's give it a try.

## Exercise

For each character, show its stat_modifier and its absolute value (as absolute_value).

### Stuck? Here's a hint!

Use abs(stat_modifier).