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Oracle® SQL by Example, Fourth Edition by Alice Rischert

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Chapter 16. Regular Expressions and Hierarchical Queries

This lab will expand your knowledge of regular expressions so you can fully harness their potential. You will learn about the essential metacharacters and gain an understanding of how regular expressions are implemented within the context of the Oracle database.

Hierarchical queries are discussed in Lab 16.2. You will learn how to use the CONNECT BY clause and the PRIOR operator to graphically display a hierarchy and reveal the relationship of records within a table.

Lab 16.1 Regular Expressions

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