December 2001
Intermediate to advanced
800 pages
17h 55m
English
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Dynamic Views
When you access a view, a query plan is constructed by combining the original SELECT statement that was used to create the view with the one you're using to query it. Normally, the selection criteria you specified when you built the view are combined with any specified by your query, and the composite is passed on to the server engine for further processing.
Most views that include selection criteria impose static (or deterministic) criteria—the selection logic that's combined with the SELECT statement accessing the view never changes, regardless of how many times the view is queried. The dynamic portion of the composite query usually comes from the user-supplied SELECT, not the view. With the exception of views that use joins to ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.