June 2010
Intermediate to advanced
328 pages
7h 51m
English
Content preview from SQL AntipatternsBecome 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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Solution: MENTOR Your Indexes
The Index Shotgun antipattern is about creating or dropping indexes without reason, so let’s come up with ways to analyze a database and find good reasons to include indexes or omit them.
You can use the mnemonic MENTOR to describe a checklist for analyzing your database for good index choices: Measure, Explain, Nominate, Test, Optimize, and Rebuild.
Measure
You can’t make informed decisions without information. Most databases provide some way to log the time to execute SQL queries so you can identify the operations with the greatest cost. For example:
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Microsoft SQL Server and Oracle both have SQL Trace facilities and tools to report and analyze trace results. Microsoft calls this tool the SQL Server Profiler ...
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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.