October 2002
Beginner
864 pages
18h 41m
English
Content preview from Sams Teach Yourself SQL in 21 Days, Fourth EditionBecome 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,
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Summary
As you have seen today, functions, expressions, DML, DQL, DDL, views, conditions, and operators can be used in many combinations to obtain data from the database. We have attempted to show you several examples, which hopefully will open your mind to quicker and better ways of obtaining and manipulating data.
Keep in mind that there are many ways to perform tasks in SQL, as well as any other language. You could possibly write a SQL statement that has several lines of code, and then someone else may come up with a combination that may be only a couple of lines of code, yet you both get the same results. The bottom line is that reading, practice, experience, and experimentation help you become a SQL expert.
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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.