EMPTY collection predicate

We can use the EMPTY collection predicate to test if a multivalued relationship has no members.

Use the following syntax:

collection-valued-path-expression IS [NOT] EMPTY

Example: Empty collection predicate

To find all departments with no employees:

SELECT OBJECT(d) FROM DeptBean d WHERE d.emps IS EMPTY

Related concepts

EJB query language

WHERE clause

Related tasks

Use EJB query