March 2009
Intermediate to advanced
784 pages
30h 30m
English
book
Microsoft® SQL Server® 2008 Internals
by Paul Randal Kalen Delaney Kimberly Tripp, and Conor Cunningham
Content preview from Microsoft® SQL Server® 2008 InternalsBecome 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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Chapter 9. Plan Caching and Recompilation
Kalen Delaney
We’ve now looked at the query optimization process and the details of query execution in Microsoft SQL Server. Because query optimization can be a complex and time-consuming process, SQL Server frequently and beneficially reuses plans that have already been generated and saved in the plan cache, rather than producing a completely new plan. However, in some cases, a previously created plan may not be ideal for the current query execution, and we might achieve better performance by creating a new plan.
In this chapter, we look at the SQL Server 2008 plan cache and how it is organized. Most of the discussion is relevant to SQL Server 2005 as well, and I will tell you when a behavior or feature ...
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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.