17.10 - Internal Storage Limitations - Advanced SQL Engine - Teradata Database

Teradata Vantageā„¢ - Advanced SQL Engine International Character Set Support

Product
Advanced SQL Engine
Teradata Database
Release Number
17.10
Release Date
July 2021
Content Type
Configuration
User Guide
Publication ID
B035-1125-171K
Language
English (United States)

Character data entered using extended site-defined client character sets should be stored in columns defined as Unicode. The UNICODE server character set requires two bytes of storage per character so that a CHAR(5) CHARACTER SET UNICODE field occupies 10 bytes of storage.

Given the 64000 byte limit on column size, a column cannot exceed 32000 characters. Furthermore, the combination of character data and other data types cannot exceed the 64000 byte limit on row size.