Propriétaire contre locataire du dessus

SELECT u.email, u.title, u.url, u.location, u.signature, u.email_setting, u.num_posts, u.registered, u.admin_note, p.id, p.poster AS username, p.poster_id, p.poster_ip, p.poster_email, p.message, p.hide_smilies, p.posted, p.edited, p.edited_by, p.likes, g.g_id, g.g_user_title, o.user_id AS is_online FROM bb_posts AS p INNER JOIN bb_users AS u ON u.id=p.poster_id INNER JOIN bb_groups AS g ON g.g_id=u.group_id LEFT JOIN bb_online AS o ON (o.user_id=u.id AND o.user_id!=1 AND o.idle=0) WHERE p.id IN (1891548,1891554,1891555,1891556,1891566,1891569,1891574,1891579,1891580,1891585,1891587,1891588,1891589,1891591,1891592,1891593,1891594,1891595,1891596,1891602,1891492) ORDER BY p.id ASC<==req Disk full (/var/tmp/#sql_7c0_0); waiting for someone to free some space...