oracle查询出重复数据显示为空算出小计和总计的oracle语句
求高人指点这种结果的语句代码，谢谢


这是我的数据结构
create table T_Goods
(
Id int primary key,
GId varchar2(10) not null,
GName varchar2(20) not null,
GColour varchar2(10),
GWithin int,
GSize varchar2(10),
GNumber int
)



CREATE SEQUENCE seq_goods
INCREMENT BY 1
START WITH 1
NOMAXVALUE
NOCYCLE
CACHE 10;

insert into T_Goods values(seq_goods.nextval,'A01','上衣','红',0,'S',10);
insert into T_Goods values(seq_goods.nextval,'A01','上衣','白',0,'M',20);
insert into T_Goods values(seq_goods.nextval,'A01','上衣','黑',0,'L',30);
insert into T_Goods values(seq_goods.nextval,'A02','下衣','红',0,'S',5);
insert into T_Goods values(seq_goods.nextval,'A02','下衣','白',0,'M',15);