17.10 - NULL - Advanced SQL Engine - Teradata Database

Teradata Vantage™ - SQL Data Definition Language Syntax and Examples

Product
Advanced SQL Engine
Teradata Database
Release Number
17.10
Release Date
July 2021
Content Type
Programming Reference
Publication ID
B035-1144-171K
Language
English (United States)

The default is NULL except when you copy a table definition using the CREATE TABLE AS syntax, in which case the system carries the specification made for the source table over to the target table definition.

NOT
You must specify NOT NULL if you do not want nulls to be valid for the column.