Extending SQL (original) (raw)

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Chapter 35. ExtendingSQL

In the sections that follow, we will discuss how you can extend the PostgreSQL SQL query language by adding:

• functions (starting in Section 35.3)
• aggregates (starting in Section 35.10)
• data types (starting in Section 35.11)
• operators (starting in Section 35.12)
• operator classes for indexes (starting in Section 35.14)
• packages of related objects (starting in Section 35.15)