How do you sort fields which have numbers in a mathematical order

Question

The following users are present in our database..

create table users (id, name);

name [u1, u2, u3, u4, u5, u6, u7, u8, u9, u10, u11, ...]

If the above field is sorted in an ascending fashion, the output is as follows..

u1, u10, u11, u2, u3, u4 ...

Is it possible to sort this in the order at the top (i.e. list all single digits, double digits ...)

Answer 1

Try:

SELECT *
FROM users
ORDER BY CAST(SUBSTR(name FROM 2) AS UNSIGNED)

Answer 2

You could try this:

SELECT name
FROM users
ORDER BY LENGTH(name), name