17.10 - Example: Searching for NULL and NOT-NULL in the Same Statement - Advanced SQL Engine - Teradata Database

Teradata Vantage™ - SQL Functions, Expressions, and Predicates

Product
Advanced SQL Engine
Teradata Database
Release Number
17.10
Release Date
July 2021
Content Type
Programming Reference
Publication ID
B035-1145-171K
Language
English (United States)

If you are searching for values that are NULL and non-NULL in the same statement, the search condition for the NULLs must appear separately.

For example, to select the names of all employees without the job title of “Manager” or “Vice Pres”, plus the names of all employees with a null in the JobTitle column, you must enter the statement as follows:

   SELECT Name, JobTitle 
   FROM Employee 
   WHERE (JobTitle NOT IN ('Manager' OR 'Vice Pres')) 
   OR (JobTitle IS NULL) ;