April 2015
Beginner
150 pages
3h 18m
English
Content preview from Jump Start MySQL
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Chapter 3Retrieving and Updating Data
In Chapter 2, I briefly introduced you to
the SELECT statement by using SELECT *
to display all of the rows in the employee and
address tables. But SELECT is certainly
more powerful and flexible than that. It has the ability to retrieve only
certain columns, filter and sort rows, and even select rows from multiple
tables based on the relationships we’ve defined. You’ll learn how to use
SELECT to do all that and more in this chapter and in
Chapter 4.
I also promised to show you the UPDATE and
DELETE statements so you’ll be able to perform the four basic data operations: creating rows, retrieving them, and keeping them current either by updating them or deleting them. You already know how to create rows, so ...
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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.