Asked by Subbiyal Jamil on Sep 28, 2024
To query for null values,use Is Null as the criterion.
Null Values
Special markers in databases designated for fields with unknown or inapplicable information.
Is Null
A condition used in SQL to check for empty fields in a database.
- Acquire knowledge on how to perform queries for null values and the impact of employing the "Is Null" criterion.
Learning Objectives
- Acquire knowledge on how to perform queries for null values and the impact of employing the "Is Null" criterion.