How to ORDER BY 'name + 0' in codeIgniter (mysql)

Question

I have a table in a MySQL database that looks like this:

id | name
1  | 1 some words
2  | 2 some other words
3  | 1.1 some other words
...
10 | 10 some other words

If I sort the table using following method:

$this->db->select('*')
    ->order_by('name', 'ASC')
    ->get('table_name');

I receive the table in following order:

id | name
1  | 1 some words
3  | 1.1 some other words
10 | 10 some other words
...
2  | 2 some other words

But I actually want to receive the table in this order:

id | name
1  | 1 some words
3  | 1.1 some other words
2  | 2 some other words
...
10  | 10 some other words

This is possible using following SQL statement:

SELECT * FROM database_name.table_name ORDER BY name + 0 ASC;

But if I use codeIgniters query builder like this I get a database error:

$this->db->select('*')
    ->order_by('name + 0', 'ASC')
    ->get('table_name');

Note that it is not possible in my situation to either store the numbers in a different column or order by id.

So is there a way to make this SQL statement work in CodeIgniters query builder?

SELECT * FROM database_name.table_name ORDER BY name + 0 ASC;

Thanks in advance

EDIT: I am very sorry for the confusion but the '.' in 1.1 was not meant to be a floating point but as a dot like in: 1.1.1, 1.1.2, 1.1.3 I have found a solution using @Marc B solution and put it into the query builder like this:

$query = $this->db->select('name+0  AS name', FALSE)           
    ->order_by('name', 'ASC')
    ->get('table_name');

Thank you all very much for your answers

Answer 1

Use a derived field and an alias?

SELECT name+0 AS fakename ...
ORDER BY fakename