Skip to Content
SQL Antipatterns
book

SQL Antipatterns

by Bill Karwin
June 2010
Intermediate to advanced
328 pages
7h 51m
English
Pragmatic Bookshelf
Content preview from SQL Antipatterns

Myths About Normalization

It’s hard to find a subject that is so widely misunderstood, despite having a precise definition. You are practically guaranteed to encounter developers who express with complete confidence untruths such as these:

  • “Normalization makes a database slower. Denormalization makes a data- base faster.”

    False. It’s true that you may need to use a join to retrieve attributes from separate tables after you apply normalization. If you denormalize data, you can avoid some joins. For example, the comma-separated list in Chapter 2, Jaywalking stores products for a given bug. But what if you also need a list of bugs for a given product? Denormalization usually helps convenience or performance for one type of query, but at great ...

Become 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,
and much more.

Read now

Unlock full access

More than 5,000 organizations count on O’Reilly

AirBnbBlueOriginElectronic ArtsHomeDepotNasdaqRakutenTata Consultancy Services

QuotationMarkO’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.
Head of Cybersecurity
QuotationMarkI 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.
Field Engineer
QuotationMarkI’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.
Data Platform Tech Lead
QuotationMarkI'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.
Mark W.
Embedded Software Engineer

You might also like

SQL Antipatterns, Volume 1

SQL Antipatterns, Volume 1

Bill Karwin
Practical SQL

Practical SQL

Anthony DeBarros
SQL in a Nutshell, 4th Edition

SQL in a Nutshell, 4th Edition

Kevin Kline, Regina O. Obe, Leo S. Hsu
SQL Cookbook, 2nd Edition

SQL Cookbook, 2nd Edition

Anthony Molinaro, Robert de Graaf

Publisher Resources

ISBN: 9781680500073Errata Page