[SQL] Wytłumaczenie zapytania Opcje

[Fafu]

Chciałbym prosić aby ktoś wytłumaczył mi to zapytanie mysql:

[SQL] pobierz, plaintext 
SELECT f.*, COUNT(t.thread_id) AS thread_count, MAX(t.thread_lastpost) AS last_post, f2.forum_name AS forum_cat_name, u.user_id, u.user_name FROM ".$db_prefix."forums f
    LEFT JOIN ".$db_prefix."threads t USING(forum_id)
    LEFT JOIN ".$db_prefix."forums f2 ON f.forum_cat = f2.forum_id
    LEFT JOIN ".$db_prefix."users u ON f.forum_lastuser = u.user_id
    WHERE ".groupaccess('f.forum_access')." AND f.forum_cat!='0' GROUP BY forum_id ORDER BY f2.forum_order ASC, f.forum_order ASC
[SQL] pobierz, plaintext 

jest to zapytanie z forum php-fusion