有没有一种方法统计出每种类型中各种商品名称的总数量，相当于总统计：得到这样的表结构
下面附带有oracle表
商品类型 总数量 商品名称 数量
电脑 56 戴尔 16
IBM 30
HP 10
相机 12 自能 5
索尼 7
[code="sql"]
with temp as (
select 'computer' as goods_type ,'dell' as goods_name,6 as counts from dual
union
select 'computer' as goods_type ,'dell' as goods_name,5 as counts from dual
union
select 'computer' as goods_type ,'dell' as goods_name,5 as counts from dual
union
select 'computer' as goods_type ,'ibm' as goods_name,3 as counts from dual
union
select 'computer' as goods_type ,'ibm' as goods_name,10 as counts from dual
union
select 'computer' as goods_type ,'hp' as goods_name,10 as counts from dual
union
select 'camera' as goods_type ,'zineng' as goods_name,5 as counts from dual
union
select 'camera' as goods_type ,'zineng' as goods_name,10 as counts from dual
union
select 'camera' as goods_type ,'zineng' as goods_name,5 as counts from dual
union
select 'camera' as goods_type ,'sony' as goods_name,7 as counts from dual
)
select goods_type,goods_name,sum(counts) from temp group by goods_type,goods_name
[/code]
贴个表结构的截图呗，电脑上么有oracle