SQLite multiple rows to a single string

I am accessing an SQLite database using Ruby sqlite3 gem.

I have a table such as:

id | ip      | nick
1  | 1.2.3.4 | abc
2  | 1.2.3.4 | def
3  | 1.2.3.4 | ghi
4  | 1.2.3.4 | jkl
5  | 1.2.3.4 | mno

and a query such as:

SELECT nick FROM table WHERE ip = '1.2.3.4'

but I want a single row returned, with all nicks for that IP address in alphabetical order:

nicks = ["abc", "def", "ghi", "jkl", "mto"]

What is the best method to achieve it?