How to show sequential number in MySQL query result

I have some simple query:

SELECT foo, bar FROM table

i think you now whats the result looks like.

What I want to do is to show some sequential number based on how many data appear from query result. its just like AUTO_INCREMENT(its not mean i want to show ID). The result what I want is like:

|No|   foo   |    bar   |
-------------------------
|1 |   bla   |    123   |
|2 |   boo   |    abc   |
|3 |   wow   |    xxx   |

How should I do to make it?

thanks in advance