Review
So you think you can count?
Rounding functions and more
Review and practice

## Instruction

Oops! As you can see, the error occurs even if there is a single row with a zero value in the denominator.

How can we deal with it? There are a few ways to solve the problem.

For now, you can use the good old WHERE clause to filter out any rows that contain a zero:

WHERE ColumnName != 0;

We'll discuss other methods of dealing with division by zero later in our course.

## Exercise

For each character, show its name and try to divide its MP by its Wisdom. Filter out rows with 0 wisdom points. Name the column Ratio.

### Stuck? Here's a hint!

Don't forget about CAST() in division.