SQL COUNT GROUP BY

Question

У меня есть эта таблица:

Вес пакета кода
-------------------
11 2 20
12 145
11 1 15
12 4 15

как мне получить результат:

Вес пакета кода
-------------------
11 3 35
12 5 60

Заранее спасибо, Стив

Answer 1

SELECT    Code,
          SUM(Packet) AS Packet,
          SUM([Weight]) AS [Weight]
FROM      [YourTable]
GROUP BY  CODE
ORDER BY  CODE

Answer 2

SELECT Code, SUM(Packet) as Packet, SUM(Weight) as Weight
FROM Table
GROUP BY Code

Answer 3

SELECT Code, SUM(Packet) [Packet], SUM(Weight) [Weight]
FROM MyTable
GROUP BY Code

Answer 4

SELECT 
    SUM(Packet) AS PacketSum,
    SUM(Weight) AS WeightSum

FROM table
GROUP BY Code

Answer 5

select code, sum(packet), avg(weight) from mytable group by code