I'm looking to get a number of records back from the database given a list of numbers and was wondering how I would use $wpdb->prepare to do this (to take advantage of the sanitising vs SQL injection attacks that it gives me).
A wrong way of going about what I'd like to achieve is
$wpdb->query($wpdb->prepare('SELECT * FROM wp_postmeta WHERE post_id IN (' . implode(',', $ids) .') but this gives the chance of an SQL Injection attack (imagine one of the ids having the value "0); DROP TABLE wp_posts;").
NOTE: I'm not trying to select data from wp_postmeta, I'm just using it as example.