March 2009
Intermediate to advanced
832 pages
23h 49m
English
book
Inside Microsoft® SQL Server® 2008: T-SQL Querying
by Lubor Kollar Itzik Ben-Gan Dejan Sarka, and Steve Kass
Content preview from Inside Microsoft® SQL Server® 2008: T-SQL QueryingBecome 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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Index Tuning
This section covers index tuning, which is an important facet of query tuning. Indexes are sorting and searching structures. They reduce the need for I/O when looking for data and for sorting when certain elements in the plan need or can benefit from sorted data. While some aspects of tuning can improve performance by a modest percentage, index tuning can often improve query performance by orders of magnitude. Hence, if you’re in charge of tuning, learning about indexes in depth is time well spent.
I’ll start by describing table and index structures that are relevant for our discussions. Then I’ll describe index access methods used by the optimizer and conclude the section with an analysis of indexing strategies.
Table and Index Structures ...
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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.