Network Deployment (Distributed operating systems), v8.0 > Develop and deploying applications > Develop Dynamic and EJB query > Develop applications that use EJB query > EJB query language > WHERE clause

NULL predicate

The NULL predicate tests for null values.

Use the syntax:

single-valued-path-expression IS [NOT] NULL

Example: NULL predicate

e.name IS NULL

e.dept.name IS NOT NULL

e.dept IS NOT NULL

EJB query language
WHERE clause
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