September 2006
Beginner
1056 pages
17h 57m
English
book
Introduction to SQL: Mastering the Relational Database Language, Fourth Edition/20th Anniversary Edition
by Rick F. van der Lans
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Chapter 33. User-Defined Data Types, Functions, and Operators
Introduction
Chapter 5, “SELECT Statement: Common Elements,” described data types as INTEGER, CHAR, and DATE. These are the so-called base data types and are an integral part of SQL. They offer certain features, and we can apply predefined operations to them. For example, we can perform calculations on values with the INTEGER data type, and we can apply operators such as + and – to them. However, the base data types of SQL are very elementary. Some users need much more complex and specialized data types. In an environment in which geographical data is stored, a data type as a two-dimensional (2D) coordinate, for example, would be very useful. Similarly, the data type color could be useful ...
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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.
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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.