SQL Server:将多个度量值列聚合为一列

我是一个SQL新手，在提问之前，我会尽最大努力搜索这个主题

我有以下格式的数据：

我需要以下格式：

我意识到这可能很容易，但任何帮助都将不胜感激

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谢谢

您可以在SQL SERVER上尝试以下操作：

CREATE TABLE TestPvt (Year varchar(32), January int, february int,  
    March int);  
GO  
INSERT INTO TestPvt VALUES ('Actual 2019',700,220,456);  
INSERT INTO TestPvt VALUES ('Budget 2019',200,752,500);  

SELECT Year, Month, Amount  
FROM   
   (SELECT Year, January, february, March  
   FROM TestPvt) p  
UNPIVOT  
   (Amount FOR Month IN   
      (January, february, March)  
)AS unpvt;

结果是：

Year    Month   Amount
Actual 2019 January 700
Actual 2019 february    220
Actual 2019 March   456
Budget 2019 January 200
Budget 2019 february    752
Budget 2019 March   500

---

您可以在SQL SERVER上尝试此操作：

CREATE TABLE TestPvt (Year varchar(32), January int, february int,  
    March int);  
GO  
INSERT INTO TestPvt VALUES ('Actual 2019',700,220,456);  
INSERT INTO TestPvt VALUES ('Budget 2019',200,752,500);  

SELECT Year, Month, Amount  
FROM   
   (SELECT Year, January, february, March  
   FROM TestPvt) p  
UNPIVOT  
   (Amount FOR Month IN   
      (January, february, March)  
)AS unpvt;

结果是：

Year    Month   Amount
Actual 2019 January 700
Actual 2019 february    220
Actual 2019 March   456
Budget 2019 January 200
Budget 2019 february    752
Budget 2019 March   500

---

如果您使用的是

SQL Server

，则可以使用

APPLY

：

SELECT t.year, tt.Months, tt.Amount
FROM TABLE t CROSS APPLY
     ( VALUES (1, 'January', [Month1]), 
              (2, 'February', [Month2]), 
               . . .  
     ) tt(seq, Months, Amount)
ORDER BY tt.seq, t.year;

---

如果您使用的是

SQL Server

，则可以使用

APPLY

：

SELECT t.year, tt.Months, tt.Amount
FROM TABLE t CROSS APPLY
     ( VALUES (1, 'January', [Month1]), 
              (2, 'February', [Month2]), 
               . . .  
     ) tt(seq, Months, Amount)
ORDER BY tt.seq, t.year;

你可以试试： 以您提供的列为例，我制作了这个SQL，希望这对您有所帮助！ 把桌子换成原样就行了

SELECT Year, 
case when Month = 'Month1' then 'January'
    when Month = 'Month2' then 'February'
    when Month = 'Month3' then 'March' 
    else '' end as Month,
    Amount  
FROM   
   (SELECT Year, Month1, Month2, Month3  
   FROM  [dbo].[ExampleMonths]) tb1  
    UNPIVOT  
   (Amount for Month IN   
      (tb1.Month1, tb1.Month2, tb1.Month3)      
    ) AS uNp

您可以尝试： 以您提供的列为例，我制作了这个SQL，希望这对您有所帮助！ 把桌子换成原样就行了

SELECT Year, 
case when Month = 'Month1' then 'January'
    when Month = 'Month2' then 'February'
    when Month = 'Month3' then 'March' 
    else '' end as Month,
    Amount  
FROM   
   (SELECT Year, Month1, Month2, Month3  
   FROM  [dbo].[ExampleMonths]) tb1  
    UNPIVOT  
   (Amount for Month IN   
      (tb1.Month1, tb1.Month2, tb1.Month3)      
    ) AS uNp

---

您需要使用SQL Server查看

unpivot

和/或

cross-apply

您需要使用SQL Server查看

unpivot

和/或

cross-apply