SQL pivot get products by orderNr - sql

Question

I have 2 tables:
'OrderHeader' with columns OrderNr and OrderContact.
'OrderDetail with columns OrderNr and OrderSerial.
For each ordernr there are max 3 orderserials.
So, what I'm trying to get is a table with columns:
OrderNr
OderContact
OrderSerial1
OrderSerial2
OrderSerial3
I'm now stuck with my pivot
SELECT OrderNr,
OderContact,
[1] as OrderSerial1,
[2] as OrderSerial2,
[3] as OrderSerial3
FROM
(select H.OrderNR as OrderNr,
OrderContact as OderContact,
OrderSerialsNr
from OrderHeader H inner join OrderDetail D on H.OrderNr = D.OrderNr
) AS PivSource
PIVOT
(count(OrderSerialsNr) for OrderSerialsNr in([1],[2],[3])) as pvt
I used the adventureworks DB for this.
USE [AdventureWorks2008R2]
GO
create view [test].[OrderHeader] (OrderNr,OrderContact)
as
SELECT SalesOrderID,
FirstName + ' ' + LastName
FROM Sales.SalesOrderHeader INNER JOIN
Sales.Customer ON Sales.SalesOrderHeader.CustomerID = Sales.Customer.CustomerID INNER JOIN
Person.Person ON Sales.Customer.PersonID = Person.Person.BusinessEntityID
GO
CREATE view [test].[OrderDetail] (OrderNr,OrderSerialsNr,Price)
as
SELECT [SalesOrderID]
,[ProductID]
,[unitPrice]
FROM [AdventureWorks2008R2].[Sales].[SalesOrderDetail]
where SalesOrderID in (select SalesOrderID
from [AdventureWorks2008R2].[Sales].[SalesOrderDetail]
group by SalesOrderID
having COUNT(SalesOrderID) < 4)
GO
Please help cause I don't know where to look anymore :).

Answer 1

To get data in pivot table the in claus should have correct data from table
you can get more idea from this query
if 1 and 2 are not in your table it will not appear as count and at a column value
CREATE TABLE #OrderHeader
(ORDERNR INT,
ORDERCONTACT CHAR(5))
CREATE TABLE #ORDERDETAIL
(ORDERNR INT,
ORDERSERIAL VARCHAR(10)
)
INSERT INTO #OrderHeader VALUES ( 1, 'X')
INSERT INTO #ORDERDETAIL VALUES ( 1, 'X1')
INSERT INTO #ORDERDETAIL VALUES ( 1, 'X2')
INSERT INTO #ORDERDETAIL VALUES ( 1, 1)
INSERT INTO #ORDERDETAIL VALUES ( 1, 2)
SELECT * FROM #OrderHeader
SELECT * FROM #ORDERDETAIL
SELECT OrderNr,
OderContact,
[1] as OrderSerial1,
[2] as OrderSerial2,
[3] as OrderSerial3
FROM
(select H.OrderNR as OrderNr,
OrderContact as OderContact,
ORDERSERIAL
from #OrderHeader H inner join #ORDERDETAIL D on H.OrderNr = D.OrderNr
) AS PivSource
PIVOT
(count(ORDERSERIAL) for ORDERSERIAL in([1],[2],[3])) as pvt
DROP TABLE #OrderHeader
DROP TABLE #ORDERDETAIL