Introduction

Extending the Database Server

Using a User-Defined Routine

Running a User-Defined Routine

Developing a User-Defined Routine

Extending Data Types

Extending Operators and Built-In Functions

Creating User-Defined Casts

Creating User-Defined Aggregates

Creating an Opaque Data Type

Writing Support Functions

In This Chapter

Writing Support Functions

Data Types for Support Functions

Handling the External Representation

Handling the Internal Representation

Performing Bulk Copies

Inserting and Deleting Data

Handling Smart Large Objects

Comparing Data

Handling Locale-Sensitive Data (GLS)

Locale-Sensitive Input and Output Support Functions

Locale-Sensitive Receive and Send Support Functions

Using Operating System Functions

Extending an Operator Class

Managing a User-Defined Routine

Improving UDR Performance

Appendix. Accessibility

Notices

Index