Example

Teradata Vantageā„¢ SQL Functions, Expressions, and Predicates

brand
Software
Teradata Vantage
prodname
Teradata Database
Teradata Vantage NewSQL Engine
vrm_release
16.20
category
Programming Reference
featnum
B035-1145-162K

Conversely, to search for the names of all employees who have been assigned to a department, you could enter the following statement:

   SELECT Name 
   FROM Employee 
   WHERE DeptNo IS NOT NULL;

This query returns the names of all employees with a value that is non-NULL in the DeptNo field.