Beginning Microsoft SQL Server 2008 ... - S3 Tech Training

soh.OrderDate,
sod.ProductID,
pp.Name,
sod.OrderQty,
sod.UnitPrice,
sod.UnitPriceDiscount * sod.UnitPrice * sod.OrderQty AS TotalDiscount,
sod.LineTotal
FROM Sales.Customer AS sc
INNER JOIN Sales.SalesOrderHeader AS soh
ON sc.CustomerID = soh.CustomerID
INNER JOIN Sales.SalesOrderDetail AS sod
ON soh.SalesOrderID = sod.SalesOrderID
INNER JOIN Production.Product AS pp
ON sod.ProductID = pp.ProductID
WHERE CAST(soh.OrderDate AS Date) =
CAST(DATEADD(day,-1,GETDATE()) AS Date);
All the dates in the AdventureWorks2008 database are old enough that this view wouldn’t return any
data, so let’s modify a few existing rows to test it:
USE AdventureWorks2008
UPDATE Sales.SalesOrderHeader
SET OrderDate = CAST(DATEADD(day,-1,GETDATE()) AS Date),
DueDate = CAST(DATEADD(day,11,GETDATE()) AS Date),
ShipDate = CAST(DATEADD(day,6,GETDATE()) AS Date)
WHERE Sales.SalesOrderID BETWEEN 43659 AND 43662;
The core of this is a relatively simple update statement that is resetting the dates on a few orders to be
relative to yesterday (the day before whatever day you run that update statement). The GETDATE()
function is, just as you would expect, getting your current date. We’ll discuss some of the other pieces in
a bit. For now, I’ll ask that you just take this one largely on faith, and trust that you’ll need to run this to
have a value in AdventureWorks2008 that will come up for our view. You should see a result from the
Management Studio that looks something like this:
(31,465 row(s) affected)
Be aware that the message will appear on the Messages tab only if you are using the Management Studio’s
Results In Grid mode. It should show up in your Results table if you’re in text mode.
The OrderID might vary, but the rest should hold pretty true.
Now let’s run a query against your view and see what we get:
SELECT AccountNumber, SalesOrderID, OrderDate FROM YesterdaysOrders_vw;
You can see that our four orders do show up. Indeed, since each has several line items, you should wind
up with a total of 121,317 rows:
AccountNumber SalesOrderID OrderDate
------------- ------------ -----------------------
AW00000676 43659 2007-09-30 00:00:00.000
Chapter 10: Views
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