为什么在这种列里面不行呢
原因 
 use   pubs 
 select      stor_id      ,sum(qty)   as   总订货数量,   count   (distinct   stor_id)   as   客户ID   from   sales      where   stor_id=7131 
 为什么不行呢?   
------解决方案--------------------select  stor_id  ,sum(qty) as 总订货数量, count (distinct stor_id) as 客户ID from sales  where stor_id=7131 
 group by stor_id     
 或者   
 select  sum(qty) as 总订货数量, count (distinct stor_id) as 客户ID from sales  where stor_id=7131
------解决方案--------------------select  stor_id  ,sum(qty) as 总订货数量, count (distinct stor_id) as 客户ID from sales  where stor_id= '7131 ' 
 group by stor_id 
------解决方案----------------------try   
 select  stor_id  ,sum(qty) as 总订货数量, count (distinct stor_id) as 客户ID  
 from sales   
 where stor_id= '7131 ' 
 group by stor_id 
------解决方案----------------------try   
 select   '7131 ' as stor_id,sum(qty) as 总订货数量, count (distinct stor_id) as 客户ID  
 from sales   
 where stor_id= '7131 '