With rollup 按類型算總數，插入一行算附加彙總列

coalesce 如果有輸出，沒有就寫後面的字符串

select * from material order by name,color
select coalesce(name, '狗狗總數'),coalesce(color,'同名'),sum(num) from material
group by name,color with rollup

數據的插入

CREATE TABLE material(
pid INT PRIMARY KEY IDENTITY(1,1),
name VARCHAR(100),
color VARCHAR(50),
num INT
);
INSERT INTO material(name,color,num)
SELECT 'ball','red',12
UNION ALL
SELECT 'ball','red',24
UNION ALL
SELECT 'cat','yellow',13
UNION ALL
SELECT 'ball','yellow',13
UNION ALL
SELECT 'dog','yellow',13
UNION ALL
SELECT 'cat','black',4
UNION ALL
SELECT 'cat','white',5