私は3つのテーブルを持っています:
製品
ProductID ProductName
1 Cycle
2 Scooter
3 Car
顧客
CustomerID CustomerName
101 Ronald
102 Michelle
103 Armstrong
104 Schmidt
105 Peterson
トランザクション
TID ProductID CustomerID TranDate Amount
10001 1 101 01-Jan-11 25000.00
10002 2 101 02-Jan-11 98547.52
10003 1 102 03-Feb-11 15000.00
10004 3 102 07-Jan-11 36571.85
10005 2 105 09-Feb-11 82658.23
10006 2 104 10-Feb-11 54000.25
10007 3 103 20-Feb-11 80115.50
10008 3 104 22-Feb-11 45000.65
次のようにトランザクションをグループ化するクエリを作成しました。
SELECT P.ProductName AS Product,
C.CustName AS Customer,
SUM(T.Amount) AS Amount
FROM Transactions AS T
INNER JOIN Product AS P
ON T.ProductID = P.ProductID
INNER JOIN Customer AS C
ON T.CustomerID = C.CustomerID
WHERE T.TranDate BETWEEN '2011-01-01' AND '2011-03-31'
GROUP BY
P.ProductName,
C.CustName
ORDER BY
P.ProductName
これにより、次のような結果が得られます。
Product Customer Amount
Car Armstrong 80115.50
Car Michelle 36571.85
Car Schmidt 45000.65
Cycle Michelle 15000.00
Cycle Ronald 25000.00
Scooter Peterson 82658.23
Scooter Ronald 98547.52
Scooter Schmidt 54000.25
次のようなMATRIX形式のクエリの結果が必要です:
Customer |------------ Amounts ---------------
Name |Car Cycle Scooter Totals
Armstrong 80115.50 0.00 0.00 80115.50
Michelle 36571.85 15000.00 0.00 51571.85
Ronald 0.00 25000.00 98547.52 123547.52
Peterson 0.00 0.00 82658.23 82658.23
Schmidt 45000.65 0.00 54000.25 99000.90
SQL Server 2005で上記の結果を達成するのを手伝ってください。複数のビュー、または一時テーブルを使用することは私にとっては問題ありません。
SQL Serverの [〜#〜]ピボット[〜#〜] 演算子を使用できます
SELECT *
FROM (
SELECT P.ProductName
, C.CustName
, T.Amount
FROM Transactions AS T
INNER JOIN Product AS P ON T.ProductID = P.ProductID
INNER JOIN Customer AS C ON T.CustomerID = C.CustomerID
WHERE T.TranDate BETWEEN '2011-01-01' AND '2011-03-31'
) s
PIVOT (SUM(Amount) FOR ProductName IN ([Car], [Cycle], [Scooter])) pvt
テストデータ
;WITH q AS (
SELECT [Product] = 'Car', [Customer] = 'Armstrong', [Amount] = 80115.50
UNION ALL SELECT 'Car', 'Michelle', 36571.85
UNION ALL SELECT 'Car', 'Schmidt', 45000.65
UNION ALL SELECT 'Cycle', 'Michelle', 15000.00
UNION ALL SELECT 'Cycle', 'Ronald', 25000.00
UNION ALL SELECT 'Scooter', 'Peterson', 82658.23
UNION ALL SELECT 'Scooter', 'Ronald', 98547.52
UNION ALL SELECT 'Scooter', 'Schmidt', 54000.25
)
SELECT Customer
, Car = ISNULL(Car, 0)
, Cycle = ISNULL(Cycle, 0)
, Scooter = ISNULL(Scooter, 0)
, Total = ISNULL(Car, 0) + ISNULL(Cycle, 0) + ISNULL(Scooter, 0)
FROM (
SELECT *
FROM q
) s
PIVOT (SUM(Amount) FOR Product IN ([Car], [Cycle], [Scooter])) pvt
出力
Customer Car Cycle Scooter Total
Armstrong 80115.50 0.00 0.00 80115.50
Michelle 36571.85 15000.00 0.00 51571.85
Peterson 0.00 0.00 82658.23 82658.23
Ronald 0.00 25000.00 98547.52 123547.52
Schmidt 45000.65 0.00 54000.25 99000.90
ピボットを使用してマトリックスを作成できます。これはデータフレームで簡単に実行できます。
product|Key|Value
A |P |10|
A |Q |40|
B |R |50|
B |S |50|
val newdf=df.groupBy("product").pivot("key").sum("value")
|product|P |Q |R |S |
|B |null|null| 50| 50|
|A | 10| 40|null|null|
Nullを置き換えることができ、計算も行うことができます
create table #Product (ProductID int,ProductName varchar(15))
insert into #Product values (1,'Cycle')
insert into #Product values (2,'Scooter')
insert into #Product values (3,'Car')
create table #Customer (CustomerID int, CustomerName varchar(30))
insert into #Customer values (101,'Ronald')
insert into #Customer values (102,'Michelle')
insert into #Customer values (103,'Armstrong')
insert into #Customer values (104,'Schmidt')
insert into #Customer values (105,'Peterson')
create table #Transactions (TID int,ProductID int,CustomerID int, TranDate smalldatetime,Amount decimal(18,2))
insert into #Transactions values (10001,1,101,'01-Jan-11',25000.00)
insert into #Transactions values (10002,2,101,'02-Jan-11',98547.52)
insert into #Transactions values (10003,1,102,'03-Feb-11',15000.00)
insert into #Transactions values (10004,3,102,'07-Jan-11',36571.85)
insert into #Transactions values (10005,2,105,'09-Feb-11',82658.23)
insert into #Transactions values (10006,2,104,'10-Feb-11',54000.25)
insert into #Transactions values (10007,3,103,'20-Feb-11',80115.50)
insert into #Transactions values (10008,3,104,'22-Feb-11',45000.65)
with temp as
(
select cus.CustomerName,pro.ProductName, sum(trans.Amount) as Amount from #Transactions as trans
inner join #Customer as cus on trans.CustomerID = cus.CustomerID
inner join #Product as pro on trans.ProductID = pro.ProductID
group by cus.CustomerName,pro.ProductName
)
select CustomerName,isnull([Car],0)Car, isnull([Cycle],0)Cycle,isnull([Scooter],0) as Scooter, isnull([Car],0)+isnull([Cycle],0)+isnull([Scooter],0)as Total from temp
pivot (
sum(Amount) for ProductName in ([Cycle],[Scooter],[Car])
)pot*