Chyba v SQL syntaxi

  $query = "SELECT O.* AS NUM
                FROM (aukro_order O)
                  LEFT JOIN aukro_user U ON (O.id_user=U.id)
                 WHERE O.id IN
                ( SELECT OT.id_aukro_order FROM aukro_order_transaction OT
                     LEFT JOIN aukro_transaction T
                        ON (OT.id_aukro_transaction = T.id)
                     LEFT JOIN aukro_user U
                        ON (T.id_user = U.id)
                     WHERE T.validated = 1 {$condTrans} ) {$condOrder}
                     ORDER BY {$orderCol} LIMIT $from, $numRecords ";
         $queryDB = $DB->queryExec($query);