15.00 - Semantics of SQL Nulls - Teradata Database

Teradata Database Design

prodname
Teradata Database
vrm_release
15.00
category
User Guide
featnum
B035-1094-015K

Semantics of SQL Nulls

For most applications, an SQL null means that the value of interest is not known. The only exceptions to this occur when nulls are used to represent the empty set. SQL does not support the empty set.