如何使用行數據爲列，具有可變行數據

Question

我有一個表在數據庫中，如：

而且我想要的數據輸出，如：

FeeName列值不固定，即另一種費用也可以存在。

請幫忙解決它。

尋找您寶貴的解決方案。

謝謝...

Answer 1

正如Turophile所說，這種數據格式表明您的數據設計有問題。

不過，如果你需要做到這一點，這裏的如何，我會做到這一點。

（注意：我創建了一個臨時表，並在例如填充它你已經擁有的表和數據，但我需要一些用於測試）

Create table #feeSchedule 
(
    FeeId int identity(1,1) not null primary key, 
    Description nvarchar(255) not null, 
    FeeAmount money not null, 
    FeeName nvarchar(50) not null 
) 
go 

insert into #feeSchedule values('Nursery', 5000, 'Admission Fee') 
insert into #feeSchedule values('Nursery', 1000, 'Tuition Fee') 
insert into #feeSchedule values('Nursery', 100, 'Late Fee') 
insert into #feeSchedule values('Nursery', 0, 'Exam Fee') 
insert into #feeSchedule values('Play Group', 5000, 'Admission Fee') 
insert into #feeSchedule values('Play Group', 2500, 'Tuition Fee') 
insert into #feeSchedule values('Play Group', 100, 'Late Fee') 
insert into #feeSchedule values('Play Group', 0, 'Exam Fee') 


DECLARE @columnHeaders VARCHAR(MAX) 
SELECT @columnHeaders = 
    COALESCE( 
    @columnHeaders + ',[' + cast(FeeName as varchar) + ']', 
    '[' + cast(FeeName as varchar)+ ']' 
) 
FROM (select distinct FeeName from #feeSchedule) as fs 

DECLARE @sql NVARCHAR(MAX) 
SET @sql = N' 
    SELECT * 
    FROM (
    SELECT 
     fs.Description, 
     fs.FeeName, 
     fs.FeeAmount 
    FROM #feeSchedule fs 
) AS PivotData 
    PIVOT (
    SUM(FeeAmount) 
    FOR FeeName IN (
     ' + @columnHeaders + ' 
    ) 
) AS PivotTable 
' 

exec sp_ExecuteSql @sql 

go 
drop table #feeSchedule 

Answer 2

---

SELECT * 
FROM (
SELECT 
    Description(invoiceDate) as [year],FeeAmount, 
    InvoiceAmount as Amount 
FROM TableName 
) as s 
PIVOT 
(
SUM(Amount) 
FOR [month] IN (Admission Fee, Tution Fee, Exam Fee, Late Fee) 
)AS pivot