SQl 多表 统计
数据库中有很多表，我要统计   每个编辑的录入条数   列Inputer   记录编辑名
例如:
  产品表   Product
PId     Inputer
1             a
2             a
3             b
4             c
  下载表   DownLoad
Did     Inputer
1             b
2             a
3             b
4             a
  用户表   Users
Uid       UserName
1               a
2               b
3               c

我有如下语句可以统计
SELECT   U.UserName
DCount   =   (SELECT   Count(1)   FROM   DownLoad   D   WHERE   D.Inputer   =   U.UserName),
PCount   =   (SELECT   Count(1)   FROM   Product   P   WHERE   P.Inputer   =   U.UserName),
FROM   Users   U

可以得到如下内容
UerName         Dcount       Pcount
a                       2                   2
b                       2                   1
c                       0                   1

问题   我想进一步扩展功能得到横竖的总计，类似如下查询结果

UerName         Dcount       Pcount     Total
a                       2                   2               4
b                       2                   1               3
c                       0                   1               1
Total               4                   4               8

这样的SQL   怎么写？？

------解决方案--------------------
SELECT U.UserName,
DCount = isnull(D.cnt,0),
PCount = isnull(P.cnt,0),
Total = isnull(D.cnt,0)+isnull(P.cnt,0)
FROM Users U left join (SELECT Inputer,cnt=Count(1) FROM DownLoad group by Inputer) D on U.UserName = D.Inputer
left join (SELECT Inputer,cnt=Count(1) FROM Product group by Inputer) P on U.UserName = p.Inputer
union
SELECT UserName= 'Total ',
DCount = sum(isnull(D.cnt,0)),
PCount = sum(isnull(P.cnt,0)),
Total = sum(isnull(D.cnt,0)+isnull(P.cnt,0))
FROM Users U left join (SELECT Inputer,cnt=Count(1) FROM DownLoad group by Inputer) D on U.UserName = D.Inputer
left join (SELECT Inputer,cnt=Count(1) FROM Product group by Inputer) P on U.UserName = p.Inputer
------解决方案--------------------
create view view1