Question

尝试在此处执行某些操作以创建一种摘要数据。我不确定它是最优雅的sql代码！

我有下表

Product             Channel         Sold
-------------------     ----------------------  
PC                  Web             48
Laptop              Web             2
Speakers            Web             74
DVDs                Web             33
PC                  Shop            1
Laptop              Shop            1
Speakers            Shop            1
DVDs                Shop            5
PC                  Door-to-door    7
Laptop              Door-to-door    16
Speakers            Door-to-door    9
DVDs                Door-to-door    21
PC                  Referals        7
Laptop              Referals        16
Speakers            Referals        9
DVDs                Referals        21

我想查询数据，所以我得到的东西代表“直接”销售，这是一个Web和商店销售的总和，因此忽略了挨家挨户和忏悔。

Product             Channel         Sold
-------------------     ----------------------  
PC              Direct          49
Laptop          Direct          3
Speakers        Direct          75
DVDs            Direct          38

有谁知道我怎么做这个？我正在考虑分组（选择......分组），但我正在尝试的一切都是绝望的失败！洛尔。

提前致谢。

DS

EDIT！

如果我想把挨家挨户和忏悔放在一起作为“次要”怎么办？这很容易实现吗？所以我在寻找......

Product             Channel         Sold
-------------------     ----------------------  
PC              Direct          49
Laptop          Direct          3
Speakers        Direct          75
DVDs            Direct          38
PC              Secondary       14
Laptop          Secondary       32
Speakers        Secondary       18
DVDs            Secondary       42

再次感谢！

DS

Answer 1

您只需按channel过滤掉记录，然后使用SUM()列Sold为每个组product汇总这些记录。

SELECT  Product,    
        'Direct' Channel,
        SUM(Sold) TOtalSold
FROM    TableName
WHERE   Channel IN ('Web','Shop')
GROUP   BY Product

SQLFiddle Demo

<强>更新

SELECT  Product,    
        CASE    WHEN Channel IN ('Web','Shop') 
                THEN 'Direct'
                ELSE 'Secondary'
        END Channel,
        SUM(Sold) TOtalSold
FROM    TableName
GROUP   BY Product,
        CASE    WHEN Channel IN ('Web','Shop') 
                THEN 'Direct'
                ELSE 'Secondary'
        END 
ORDER   BY Channel

SQLFiddle Demo

输出

╔══════════╦═══════════╦═══════════╗
║ PRODUCT  ║  CHANNEL  ║ TOTALSOLD ║
╠══════════╬═══════════╬═══════════╣
║ Laptop   ║ Direct    ║         3 ║
║ Speakers ║ Direct    ║        75 ║
║ DVDs     ║ Direct    ║        38 ║
║ PC       ║ Direct    ║        49 ║
║ Laptop   ║ Secondary ║        32 ║
║ Speakers ║ Secondary ║        18 ║
║ DVDs     ║ Secondary ║        42 ║
║ PC       ║ Secondary ║        14 ║
╚══════════╩═══════════╩═══════════╝

分组摘要数据

1 个答案: