Indexed View Matching

Erik Darling has a series of posts on indexed views, with the latest covering query matching even when using a keyword in creation of the indexed view itself:

There are a whole bunch of limitations in creating indexed views. One of them is that you can’t base the query on DISTINCT.

Fair enough, but you can do GROUP BY.

And what’s pretty cool is that the optimizer can match a query written to find distinct values to an indexed view with a group by.

Click through for the best example ever.