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What do you mean by indexed views?

Posted By: Deco     Posted Date: October 27, 2010    Points:2   Category :Sql Server
What does the indexed view mean... Please give me some sample code

Author: Sajid P K             
Posted Date: October 27, 2010     Points: 5   


An indexed view is a view that has a unique clustered index created on it. Normally views do not exist on disk as rows. That changes for indexed views, which exist in the database as rows that realize the view. There can also be non-clustered indexes on the view so long as it has the unique clustered index.

Since the indexed view exists on disk there are two types of overhead added to the database:

The disk space taken up by the view
The cost of maintaining the view on disk as the base tables are modified.


create view "Order Details Extended" AS
SELECT OD.OrderID, OD.ProductID, Products.ProductName,
OD.UnitPrice, OD.Quantity, OD.Discount,
AS ExtendedPrice
FROM Products INNER JOIN "Order Details" OD
ON Products.ProductID = "Order Details".ProductID

More : http://www.databasejournal.com/features/mssql/article.php/2119721/Indexed-Views-Basics-in-SQL-Server-2000.htm

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