July 2005
Intermediate to advanced
1032 pages
27h 10m
English
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Retrieving Data from the Sample Database
At this point, you should have a sample database (movies) that contains three tables (tapes, customers, and rentals) and a few rows in each table. You know how to get data into a table; now let's see how to view that data.
The SELECT statement is used to retrieve data from a database. SELECT is the most complex statement in the SQL language, and the most powerful. Using SELECT, you can retrieve entire tables, single rows, a group of rows that meet a set of constraints, combinations of multiple tables, expressions, and more. To help you understand the basics of the SELECT statement, I'll try to break it down into each of its forms and move from the simple to the more complex.
SELECT Expression
In its simplest ...
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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.