sql查询，如何增加一列

select * from (
select \'finish_order_info\' as table_name,count(1)as num from fraudorder.finish_order_info where crt_dt between to_date(\'2014-12-24:00:00:00\',\'yyyy-mm-dd,hh24:mi:ss\') and to_date(\'2014-12-25:00:00:00\') group by \'finish\' union all
select \'discard_order_info\' as table_name, count(1)as num from FRAUDORDER.discard_order_info where crt_dt between to_date(\'2014-12-24:00:00:00\',\'yyyy-mm-dd,hh24:mi:ss\') and to_date(\'2014-12-25:00:00:00\')union all
select \'raw_air_order_info\' as table_name, count(1)as num from FRAUDORDER.raw_air_order_info where crt_dt between to_date(\'2014-12-24:00:00:00\',\'yyyy-mm-dd,hh24:mi:ss\') and to_date(\'2014-12-25:00:00:00\')union all
select \'app_air_order_info\' as table_name, count(1)as num from FRAUDORDER.app_air_order_info where crt_dt between to_date(\'2014-12-24:00:00:00\',\'yyyy-mm-dd,hh24:mi:ss\') and to_date(\'2014-12-25:00:00:00\')union all
select \'unkown_order_info\' as table_name, count(1)as num from FRAUDORDER.unkown_order_info where crt_dt between to_date(\'2014-12-24:00:00:00\',\'yyyy-mm-dd,hh24:mi:ss\') and to_date(\'2014-12-25:00:00:00\')
);