Why use indexed views

FROM dbo. JOIN dbo. Sales ON Employees. Products ON Sales. SaleDate ;. ON dbo. SaleDate ,. END ;. Author Recent Posts. Bojan Petrovic. He has written extensively on both the SQL Shack and the ApexSQL Solution Center , on topics ranging from client technologies like 4K resolution and theming, error handling to index strategies, and performance monitoring. Latest posts by Bojan Petrovic see all.

Dev Nambi. Ed Avis. Noel McKinney. I feel this article does not add value over what is already on the web about indexed views. Great follow up post on your Pass Summit session. Charles Kincaid. Gert Nelissen. Erik Darling. Simon Bailey. Gustav Retief. Jack David. Brent Ozar. Tim, After trying it out, it seems that is not true!

Hello Brent. Thank you very much for this post, it is a really nice summary. Excluding the removal of the schemabinding option, which are the truncate options available? Therefore its possible to create a view and not be the owner of the view. On the other hand is also possible that individual objects within a schema have different explicit owners. The following example creates a view and an index on that view.

Two queries are included that use the indexed view in the AdventureWorks database. Feedback will be sent to Microsoft: By pressing the submit button, your feedback will be used to improve Microsoft products and services. Privacy policy. Skip to main content.

This browser is no longer supported. Download Microsoft Edge More info. Contents Exit focus mode. Important When executing DML 1 on a table referenced by a large number of indexed views, or fewer but very complex indexed views, those referenced indexed views will have to be updated as well.

Note Indexes can only be created on views which have the same owner as the referenced table or tables. Is this page helpful? Yes No. Any additional feedback? There are many benefits if we understand it well and manipulate it in the right way. But there is also no free-lunch, so what should we be concerned about? Where and when to use indexed views? In this very basic article, I'm going to show you what is an indexed view and how to use it to improve query performance in SQL Server.

For a very common database for managing customers invoices, assuming we have a query with many JOIN clauses to list all order detail from customer s who live in Danang city. So wherever we want a list of order details from customers who live in Danang city, we have to run the query above. It's sometime not a short but very very long and complex query, and if the database engineer gives the complex query to a backend developer, he would get confused.

The developer only needs to know what the view does, and doesn't care about how it does it. Anywhere he needs to use the view, he just:. Cool, now he can get the result using only 1-line query. But what happens inside the view? In this case, creating a view is just a shortcut, and when the view is called, the Database Management System DBMS still has to re-run the query above to get the result.