April 2007
Intermediate to advanced
1032 pages
19h 28m
English
book
SQL for MySQL Developers: A Comprehensive Tutorial and Reference
by Rick F. van der Lans, Diane Cools
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Chapter 5. SELECT Statement: Common Elements
5.1 Introduction
This first chapter dealing with the SELECT statement describes a number of common elements that are important to many SQL statements and certainly crucial to the SELECT statement. Those who are familiar with programming languages and other database languages will find most of these concepts familiar.
Among others, this chapter covers the following common elements:
• Literal
• Expression
• Column specification
• User variable
• System variable
• Case expression
• Scalar function
• Null value
• Cast expression
• Compound expression
• Row expression
• Table expression
• Aggregation function
5.2 Literals and Their Data Types
The previous chapter used literals in many examples of SQL statements. ...
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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.
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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.