16.20 - C Scalar Function for Decompressing CLOB Data - Advanced SQL Engine - Teradata Database

Teradata Vantage™ - SQL External Routine Programming

Advanced SQL Engine
Teradata Database
Release Number
Release Date
April 2020
Content Type
Programming Reference
Publication ID
English (United States)

This example shows a decompression algorithm which reads text and adds the extra byte necessary to transform the text back to Unicode.

You must thoroughly test the UDFs you develop for algorithmic compression. If the compression or decompression algorithm fails, compressed data may not be recoverable, or may be corrupted.