armonia2 on "Get latest comment records and the corresponding post slugs in WordPress"

I have the following query for getting the latest comments:

global $wpdb;
$sql = "SELECT DISTINCT ID, post_title, post_password, comment_ID, comment_post_ID, comment_author, comment_date_gmt, comment_approved, comment_type,comment_author_url, SUBSTRING(comment_content,1,30) AS com_excerpt FROM $wpdb->comments LEFT OUTER JOIN $wpdb->posts ON ($wpdb->comments.comment_post_ID = $wpdb->posts.ID) WHERE comment_approved = '1' AND comment_type = '' AND post_password = '' ORDER BY comment_date_gmt DESC LIMIT 10";

$comments = $wpdb->get_results($sql);

I also want to get the name(slug) of the post for each comment, without running a query for each comment. Can you suggest a modification to the above query to achieve this? Better yet, can I do this using built-in WordPress functions?

Basically I need:

$comments = array ( 'comment_object' => ... , 'post_name' => ... )