$no_read1 = mysql_result(mysql_query('SELECT COUNT(*) FROM `mail_msg` WHERE `id_user`=' . $row['id'] . ' AND `id_kont`=' . $user_id . ' AND `sys`= "1" AND `read`= "1" AND `delete`!=' . $user_id . ' AND `spam`= "1";'), 0);
выдает в некоторых случаях
Warning: mysql_result(): supplied argument is not a valid MySQL result resourceКак решить данную проблему?