SELECT ts.* FROM k4_tags ts WHERE ts.tag_name IN('popular') GROUP BY ts.tag_id

SELECT DISTINCT t.thread_id, t.*, ts.tag_name, GROUP_CONCAT(ts.tag_name SEPARATOR ',') AS tags, u.name AS user_name, uu.name AS edit_user_name FROM k4_thread_tags tt, k4_tags ts, k4_threads t, k4_users u, k4_users uu, k4_thread_tags tt2  WHERE t.deleted=0 AND tt.thread_id = tt2.thread_id AND tt2.tag_id IN(18) AND t.thread_id=tt.thread_id AND ts.tag_id=tt.tag_id AND t.user_id=u.user_id AND t.edit_user_id=uu.user_id GROUP BY t.thread_id, tt2.tag_id ORDER BY t.created DESC

SELECT ts.*, COUNT(tt2.tag_id) AS tag_count FROM k4_tags ts, k4_thread_tags tt1 JOIN k4_thread_tags tt2 USING ( thread_id )   WHERE tt1.tag_id IN(18) AND tt1.tag_id <> tt2.tag_id AND ts.tag_id = tt2.tag_id GROUP BY ts.tag_id, tt2.tag_id LIMIT 250

SELECT DISTINCT u.user_id, u.name, COUNT(tt2.tag_id) AS tag_count FROM k4_thread_users tu, k4_users u, k4_thread_tags tt1 JOIN k4_thread_tags tt2 USING (thread_id) WHERE u.user_id = tu.user_id AND tt1.tag_id IN(18) AND tt1.tag_id <> tt2.tag_id AND tu.thread_id = tt2.thread_id GROUP BY tt2.tag_id ORDER BY u.name ASC

SELECT o.object_name,o.object_perms,p.perm_grant,p.perm_deny FROM k4_objects o, k4_perms p, k4_roles r, k4_user_roles u WHERE u.user_id=1  AND u.role_id=r.role_id  AND p.role_id=r.role_id  AND o.object_id=p.object_id ORDER BY r.perm_level ASC