July 2012
Intermediate to advanced
478 pages
10h 3m
English
Content preview from Microsoft SQL Server 2012 Performance Tuning CookbookBecome 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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Finding table/index scans in execution plan and fixing them
In most cases, especially while working with small amount of data from big tables, table scan/index scan should not be the desired way to go for. It becomes mandatory to find and resolve it in order to improve the performance, because scanning process goes through each and every row available in table/index, looks for match with the criteria provided, and returns the result set. This is really a time and resource consuming, heavy process. While working on performance tuning, people are afraid of several major bottleneck issues, mentioned as follows:
- CPU
- Network
- Disk I/O
Table/index scan creates all three types of bottleneck. Scanning every row of a table/index creates a lot of disk I/O due ...
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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.