You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '-2,7' at line 19
SELECT _posts.ip as IP , DATE_FORMAT(_posts.datetime, "%d.%m.%Y %H:%i:%s") as Datetime , _posts.object_id as ObjectID , _posts.record_id as RecordID , _posts.visits as Visits ,_users.name as User ,_objects.go as Go FROM _posts LEFT JOIN _objects ON _objects.id=_posts.object_id LEFT JOIN _users ON _users.id=_posts.user_id WHERE _posts.lang_id=2 AND _objects.ajax=1 ORDER BY _posts.datetime DESC LIMIT -2,7