Skip to Content
Head First SQL, 2nd Edition
book

Head First SQL, 2nd Edition

by Kimberly Fessel
May 2026
Beginner
740 pages
17h 38m
English
O'Reilly Media, Inc.
Content preview from Head First SQL, 2nd Edition

Chapter 2. Inserting Data: Adding Data to Tables

Image

Time to dress the walls? Creating databases and tables is great fun, but what’s the point of all that precious SQL structure without actual data installed?

That’s where this chapter comes in. Here, you’ll learn how to add values to your tables with the INSERT command. You’ll see some INSERT variations and meet that infamous NULL character you’ve heard gallery ghost stories about. But not to worry, you’re also going to tame those missing values with some minor adjustments to your CREATE TABLE statement.

There’s a lot to do, so don’t delay your acquisition. Let’s secure the placement of your data.

Setting up a database with tables

In Chapter 1, you learned that you can store data in a relational database that contains tables. You can think about your information as categories, which become the columns of your table. The rows of your table, on the other hand, hold information for a single item.

Image

Plan and set up your structure in SQL before adding any data.

Checking back in with Abby

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

Head First SQL

Head First SQL

Lynn Beighley
Learning SQL

Learning SQL

Ben Forta

Publisher Resources

ISBN: 9781098163648Errata Page