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Beginning Oracle SQL: for Oracle Database 12c, Third Edition by Melanie Caffrey, Inger Jørgensen, Tim Gorman, Lex De Haan

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CHAPTER 2

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Introduction to SQL and SQL Developer

This chapter provides an introduction to the SQL language and one of two tools for working with it. Section 2.1 presents a high-level overview of the SQL language, which will give you an idea of the capabilities of this language. Then some important basic concepts of the SQL language are introduced in Section 2.2, such as constants, literals, variables, expressions, conditions, functions, operators, operands, and so on. Finally, in Section 2.3, this chapter provides a tour of SQL Developer, the main tool we recommend using to learn the SQL language. In order to maximize the benefits of any tool, ...

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