---检查邮件有无重复任务
 select * from t_op_task where  邮件编号  in 
(
  select  t.邮件编号   from  t_op_task t  where t.任务类型='vc' and  t.邮件编号 is not null   group by t.邮件编号 having count(1)>1
 
)
and pl_id not in (
 select  min(t.pl_id)  from  t_op_task t  where t.任务类型='vc'  and t.邮件编号 is not null   group by t.邮件编号 having count(1)>1
 )
 and 是否完成=0
 -----------------
 
delete  from t_op_task where  邮件编号  in 
(
  select  t.邮件编号   from  t_op_task t  where t.任务类型='vc' and  t.邮件编号 is not null  and 是否完成=1  group by t.邮件编号 having count(1)>1

)
and pl_id  not  in (
 select  min(t.pl_id)  from  t_op_task t  where t.任务类型='vc'  and t.邮件编号 is not null  and 是否完成=1  group by t.邮件编号 having count(1)>1
 )
 



-------------
--最终检查
select * from t_op_seae_edi_mail  sm
where 邮件ID in ( select    邮件ID 
from t_op_seae_edi_mail m   group by m.邮件ID having COUNT(1)>1 ) 
and 序号 not In
(
select  MIN(序号) 
from t_op_seae_edi_mail m     group by m.邮件ID having COUNT(1)>1 
 
)
     order by 邮件ID 
-----    删除 重复
delete from t_op_seae_edi_mail   
where 邮件ID in ( select  邮件ID 
from t_op_seae_edi_mail m     group by m.邮件ID having COUNT(1)>1 ) 
and 序号 not In
(
select  MIN(序号) 
from t_op_seae_edi_mail m    group by m.邮件ID having COUNT(1)>1 
 
)