SQL Server - Indexed Views

 

1. Create the view with 'SCHEMABINDING'

CREATE VIEW [dbo].[vTest] WITH SCHEMABINDING AS
SELECT

 

2. Create the index

CREATE UNIQUE CLUSTERED INDEX idx_vTest ON vTest(IndexColumn)

 

3. Constrains:

• The view must have been created with certain SET options, such as QUOTED_IDENTIFIER and CONCAT_NULL_YIELDS_NULL set to ON.
• The session creating the index must also have the correct SET options.
• Any user-defined function referenced by the view must have been created using WITH SCHEMABINDING.
• The view must be deterministic (consistently providing the same result given the same input).
• The base tables must have been created with the proper ANSI_NULLS setting.
• The result set of the view is physically stored in the database, thus storage space for the clustered index is also a constraint to consider.

4. What is 'SCHEMABINDING'?

To put it simply, once you create a view with schemabinding, you cannot change the underlying tables in a way that would break the view.  Examples of this would be removing columns or dropping tables that are specified in the view.

 

5. Reference:

http://www.codeproject.com/Articles/199058/SQL-Server-Indexed-Views-Speed-Up-Your-Select-Quer

http://strangenut.com/blogs/dacrowlah/archive/2008/12/02/what-does-schemabinding-mean-in-sql-2005-and-2008.aspx