mysql - How to find a range of given number?

Question

I have a table like below and I want to find the range of inputted number. ex) if users enters 84, MySql query returns B.

Rank  Range_Start Range_End
A       90          100
B       80          89
C       70          79
.
.
H
I        0          10

Answer 1

What about:

SELECT Rank FROM tbl WHERE Range_Start < my_value AND Range_End > my_value

Or (if you don't need strict inclusion):

SELECT Rank FROM tbl WHERE my_value BETWEEN Range_Start AND Range_End