17.10 - Example: ALC Using the LZCOMP Function - Advanced SQL Engine - Teradata Database

Teradata Vantage™ - Data Types and Literals

Product
Advanced SQL Engine
Teradata Database
Release Number
17.10
Release Date
July 2021
Content Type
Programming Reference
Publication ID
B035-1143-171K
Language
English (United States)

In this example, the NULLs in the Description column are compressed. The non-null UNICODE values in the Description column are compressed using the Teradata-supplied LZCOMP function. The LZDECOMP function uncompresses the values compressed by LZCOMP.

CREATE MULTISET TABLE Pendants
   (ItemNo INTEGER,
    Gem CHAR(10) UPPERCASE CHARACTER SET UNICODE,
    Description VARCHAR(1000) CHARACTER SET UNICODE
       COMPRESS USING TD_SYSFNLIB.LZCOMP
       DECOMPRESS USING TD_SYSFNLIB.LZDECOMP);