How to use SELECT....RAND() the rails way?

Rails
1

How can I use this query the rails way?

$query = “SELECT * FROM images ORDER BY RAND() LIMIT 16”;

2

How can I use this query the rails way?

$query = “SELECT * FROM images ORDER BY RAND() LIMIT 16”;

Image.find(:all, :order => ‘RAND()’, :limit => 16)

Just keep in mind that if there are a million rows in that table mysql
is
going to look at them all, add a RAND() column, sort it, then return the
first 16.

Which could get expensive db-wise…

-philip