在 sql 如何使用 Pivot 将数据行排列到列中

Question

这里我有一个简单的table我想在单列中显示当年显示的所有行

Year  Month     Amt
1999   Jan       520
1999   Feb       100
199    Mar       200
2000   Jan       500
2000   Feb        200

我想将这些table显示为

Year   Jan     Feb     Mar   
1999    520    100      200  
2000    500    200      null

我有书面查询，因为 invoice 它是我的 table 名字

   select
       [Jan] as January,
       [Feb] as Feburary,
       [March] as Feburary,
from(
select Year,month,amount from invoice)x

PIVOT(
sum(amount)
for month in([jan],[Feb],[March])

)p

Answer 1

您可以使用 CTE 实现它。您不能在 PIVOT table 运算符中 GROUP BY YEAR，PIVOT 运算符会自动推断分组列。这似乎有效

WITH Pivoted
AS
(
SELECT *
FROM table1
PIVOT 
( 
sum([Amt]) FOR [month] IN ( [jan],[Feb],[Mar])
) AS p
) 
SELECT 
    Year,
    sum([Jan]) as January,
    sum([Feb]) as Feburary,
    sum([Mar]) as March
FROM Pivoted
GROUP BY Year;

REXTESTER DEMO

Answer 2

请试试这个查询

create table #Invoice
(
    ID int identity(1,1),
    Year varchar(4),
    Month varchar(3),
    Amount int
)

insert into #Invoice (Year, Month, Amount) values ('1999','Jan',520),('1999','Feb',100),('1999','Mar',200),
('2000','Jan',500),('2000','Feb',200)

select Year, [Jan], [Feb],[Mar],[Grand Total]
from (
    select Year, Month, Amount
    from #Invoice
    Union all
    select Year, 'Grand Total', SUM(Amount)
    from #Invoice
    group by year
)dd
pivot (
    sum(Amount) for Month in ([Jan], [Feb],[Mar],[Grand Total])
) piv

drop table #Invoice

在 sql 如何使用 Pivot 将数据行排列到列中

in sql how to arrange rows of data into colum using Pivot

sql

tsql

sql-server

pivot