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Oracle® SQL by Example, Third Edition by Alice Rischert

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Chapter 15. Regular Expressions and Hierarchical Queries

Regular expression functionality is new to Oracle 10g. In the previous chapters you have seen a few examples of its usage; this lab expands your knowledge of regular expressions so you can fully harness its potential. If you are not already familiar with regular expressions, you will learn about the essential metacharacters. If you are familiar with this topic, you will gain an understanding of how regular expressions are implemented within the context of the Oracle database.

Hierarchical Queries are discussed in Lab 15.2. You will learn how to use the CONNECT BY clause and the PRIOR operators to ...

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