sql查询结果拼接

业务需求 

统计每天中支付宝充值总笔数和总金额及退款总笔数和总金额

select a.trandate as 交易日期 ,a.sm as 充值总金额,a.co as 充值总笔数,b.sm as 退款总金额 ,b.co as 退款总笔数 from

     (select trandate,sum(tranamt) as sm,count(*) as co from mafedb.t_zjyw_tranrechis b  where trancode ='2802'  and transtat='00' group by  trandate,trancode ) a  
full outer join 
     (select trandate,sum(tranamt) as sm,count(*) as co from mafedb.t_zjyw_tranrechis b  where trancode ='2803'  and transtat='00' group by  trandate,trancode )b  
     on a.trandate=b.trandate  order by a.trandate asc




select d.trandate,d.trancode,sum(tranamt),count(*) from mafedb.t_zjyw_tranrechis d where trancode in('2802','2803') and transtat ='00' group by trandate,trancode order by trandate asc