不同表链接count(表一)和sum(表2)函数结果集，

select count(distinct a.字段) as acountfrom a inner join b on a.字段=b.字段select sum(b.字段) as bsumfrom a inner join b on a.字段=b.字段group by b.字段
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你算聚合函数那里连from都没有的？不抱错吗？
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晕，这都能不报错？把你表结构给出来，最好给点数据吧。抽时间帮你谢谢select(select count(SubCode)from Speed
  where convert(varchar(7),BeginDate,120) = '2012-09' )as spCount,
  (select SUM(B.kiloDay)where convert(varchar(7),billdate,120) = '2012-09')as kiloSum,B.SubCode
  from Kilo B
  left join Speed A
  on A.SubCode = B.SubCode
  where convert(varchar(7),billdate,120) = '2012-09'
  group by B.SubCode,A.SubCode,convert(varchar(7),billdate,120)