根据名字和日期分组统计，求高手观望！！！
ORACLE数据库中，根据输入的指定日期，从数据表中获取指定日期所在月从月初到指定日期的所有日期的销售量小计。以店分组，并将没有销售量的日期，赋值为0数据表内容如下：
店名 --- 销售日期
A110 --- 2012-09-28
A100 --- 2012-07-09
A110 --- 2012-10-01
A110 --- 2012-10-01
A110 --- 2012-10-03
A110 --- 2012-10-05
A120 --- 2012-10-01
A000 --- 2012-10-03
--------------------------------------------------
如果输入的日期是2012-10-03就统计从2012-10-01到2012-10-03的各店在每一天分别的销售量：查询结果如下：
点名 --- 销售日期 销售量
A110 --- 2012-10-01 -- 2
A110 --- 2012-10-02 -- 0
A110 --- 2012-10-03 -- 1
A120 --- 2012-10-01 -- 1
A120 --- 2012-10-02 -- 0
A120 --- 2012-10-03 -- 0
A000 --- 2012-10-01 -- 0
A000 --- 2012-10-02 -- 0
A000 --- 2012-10-03 -- 1
跪求帮忙，摆脱！！！
想要的是查询的SQL语句，能不用PL/SQL的就尽量不用，我是初级菜鸟。
[解决办法]
按照常规思路写了一个 构造点名日期表 关联销售表统计数量 参数：2012-10-03
with t1 as
(
select 'A110' c1,date'2012-09-28' c2 from dual
union all
select 'A100' c1,date'2012-07-09' c2 from dual
union all
select 'A110' c1,date'2012-10-01' c2 from dual
union all
select 'A110' c1,date'2012-10-01' c2 from dual
union all
select 'A110' c1,date'2012-10-03' c2 from dual
union all
select 'A110' c1,date'2012-10-05' c2 from dual
union all
select 'A120' c1,date'2012-10-01' c2 from dual
union all
select 'A000' c1,date'2012-10-03' c2 from dual
)
select c.c1,c.t_date,count(d.c2) c_num
from
(
select a.c1,b.t_date
from
(
select distinct c1
from t1
where c2 between trunc(date'2012-10-03','month') and date'2012-10-03'
) a,
(
select trunc(date'2012-10-03','month')+level-1 t_date
from dual
connect by level <= date'2012-10-03'-trunc(date'2012-10-03','month')+1
) b
) c left join t1 d on c.c1 = d.c1 and c.t_date = d.c2
group by c.c1,c.t_date
order by c.c1,c.t_date
c1 t_date c_num
--------------------------------------
1A0002012/10/10
2A0002012/10/20
3A0002012/10/31
4A1102012/10/12
5A1102012/10/20
6A1102012/10/31
7A1202012/10/11
8A1202012/10/20
9A1202012/10/30
