如何在Oracle10g中进行旋转

Question

考虑以下几点

样本输入

SalesBoyName        Product       Amount
------------        -------       ------
Boy1                P1               100
Boy1                P1                40
Boy1                P2               100
Boy2                P1               100
Boy2                P3                12

期望输出

SalesBoyName     P1     P2     P3
------------   ----   ----   ----
Boy1            140    100   null
Boy2            100   null     12

下面的SQL SERVER 2005查询将完成以下工作

SELECT SalesBoyName, [P1] AS P1, [P2] AS P2,[P3] AS P3
FROM 
(SELECT * FROM tblSales ) s
PIVOT
(
SUM (Amount)
FOR Product IN
( [P1], [P2], [P3])
) AS pvt    

我想在Oracle 10g中执行相同的操作。

怎么做？

这可能是微不足道的，但由于我对Oracle非常陌生，所以我正在寻求帮助。

谢谢

Answer 1

你可以在10G中这样做：

select salesboyname, 
       sum (case when product='P1' then amount end) as p1,
       sum (case when product='P2' then amount end) as p2,
       sum (case when product='P3' then amount end) as p3
from   tblsales
group by salesboyname;

在11G中有一个类似于Server的PIVOT关键字。