NULL predicate
The NULL predicate tests for null values.
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

Using EJB query
Searchable topic ID:
cque_null
Last updated: Jun 21, 2007 4:55:42 PM CDT
WebSphere Application Server Network Deployment, Version 5.0.2
http://publib.boulder.ibm.com/infocenter/wasinfo/index.jsp?topic=/com.ibm.websphere.nd.doc/info/ae/ae/cque_null.html