December 2013
Intermediate to advanced
1872 pages
153h 31m
English
book
Microsoft® SQL Server 2012 Unleashed
by Ray Rankins, Paul T. Bertucci, Chris Gallelli, Alex T. Silverstein
Content preview from Microsoft® SQL Server 2012 UnleashedBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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Large Complex Queries
For complex queries with a large number of tables and join conditions, the number of possible execution plans can be enormous. The full optimization phase of the Query Optimizer has a time limit to restrict how long it spends analyzing all the possible query plans. There is no known general and effective shortcut to arrive at the optimal plan. To deal with such a large selection of plans, SQL Server 2012 implements a number of heuristics to deal with very large queries and attempt to come up with an efficient query plan within the time available. When it is not possible to analyze the entire set of plan alternatives and the heuristics are applied, it is not uncommon to encounter suboptimal query plans being chosen.
When ...
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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.