sql - 修改结果表

Question

我正在使用 SQL Server 2008

这是结果表

ItemCode   ItemName            Branch     Total Weight
------------------------------------------------------
FBV0001    SML WATER ARWA      Bayan         144.00 
FDR0014    RED LENTIL          Al Balad     3000.00 
FDR0014    RED LENTIL          Solidere    13500.00 
FDR0017    EGYPTIAN RICE       Solidere    75500.00 

如何修改结果如下

ItemCode   ItemName            Bayan     Al Balad    Solidere
--------------------------------------------------------------
FBV0001    SML WATER ARWA      144.00        0            0 
FDR0014    RED LENTIL            0        3000.00         0 
FDR0014    RED LENTIL            0           0        13500.00 
FDR0017    EGYPTIAN RICE         0           0        75500.00

我已经尝试了很多查询，但它不起作用。请给出一个想法如何获得这个。

Answer 1

使用Pivot表运算符。像这样的东西：

WITH CTE
AS
(
  SELECT *, ROW_NUMBER() OVER(ORDER BY ItemCode) AS RN
  FROM tablename
)
SELECT 
  ItemCode,
  ItemName,
  [Bayan], [Al Balad], [Solidere]
fROM CTE AS t
PIVOT
(
  MAX(TotalWeight)
  FOR Branch IN ([Bayan], [Al Balad], [Solidere])
) AS p;

请注意：我使用ROW_NUMBER()来生成唯一的 id 用于按它进行分组。如果您没有使用 a ROW_NUMBER()，您将只从两者中获得一行：

FDR0014      RED LENTIL
FDR0014      RED LENTIL

在这里查看它的实际效果：

• SQL 小提琴演示。

这会给你：

| ITEMCODE |       ITEMNAME |  BAYAN | AL BALAD | SOLIDERE |
------------------------------------------------------------
|  FBV0001 | SML WATER ARWA |    144 |   (null) |   (null) |
|  FDR0014 |     RED LENTIL | (null) |     3000 |   (null) |
|  FDR0014 |     RED LENTIL | (null) |   (null) |    13500 |
|  FDR0017 |  EGYPTIAN RICE | (null) |   (null) |    75500 |

Answer 2

试试这个..here SQL FIDDLE DEMO

Select [itemcode],[itemname],
(Case when [branch]='Bayan' then [totalweight] else 0 end) as Bayan,
(Case when [branch]='AL BALAD' then [totalweight] else 0 end) as AL_BALAD,
(Case when [branch]='SOLIDERE' then [totalweight] else 0 end) as SOLIDERE
from Tablename

输出是这样的..

ItemCode         ItemName                   Bayan     Al Balad         Solidere
FBV0001        SML WATER ARWA               144          0               0 
FDR0014        RED LENTIL                    0        3000               0 
FDR0014        RED LENTIL                    0            0              13500
FDR0017        EGYPTIAN RICE                 0            0              75500