Excluding Nulls From Query Results - Advanced SQL Engine - Teradata Database

Database Design

Product
Advanced SQL Engine
Teradata Database
Release Number
17.05
17.00
Published
June 2020
Language
English (United States)
Last Update
2021-01-22
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dita:id
B035-1094
lifecycle
previous
Product Category
Teradata Vantage™

The IS NOT NULL operator excludes rows having a null in a specified column from the results of a query.

For example, to search for the names of all employees with non-nulls in the job_title column, you could type the following request.

     SELECT name
     FROM employee
     WHERE job_title IS NOT NULL;

The result of this query is the names of all employees with a non-null in the job_title column. For this particular example, the names of all employees are returned because every employee has, by definition, been assigned a job title.