October 2002
Beginner
864 pages
18h 41m
English
Content preview from Sams Teach Yourself SQL in 21 Days, Fourth Edition
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Week 1: At a Glance
Week 1 introduces SQL from a historical and theoretical perspective. The first statement you learn about is the SELECT statement, which enables you to retrieve data from the database based on various user-specified options. During Week 1, you study SQL functions, query joins, and SQL subqueries (a query within a query). Many examples help you understand these important topics. These examples use Oracle, Sybase SQL Server, Microsoft Access, and Microsoft Query, and they highlight some of the similarities and differences among the products. The content of the examples should be useful and interesting to a broad group of readers.
Week 1 covers the following:
Day 1 covers some of the preliminary terms and concepts that you need ...
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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.