MEMBER OF predicate

This expression tests whether the object reference specified by the single valued path expression or input parameter is a member of the designated collection.

If the collection valued path expression designates an empty collection the value of the MEMBER OF expression is FALSE.

{ single-valued-path-expression | input_parameter } [ NOT ] MEMBER [ OF ] collection-valued-path-expression

Example: MEMBER OF predicate

Find employees that are not members of a given department number:

SELECT OBJECT(e) FROM EmpBean e , DeptBean d WHERE e NOT MEMBER OF d.emps AND d.deptno = ?1

Find employees whose manager is a member of a given department number:

SELECT OBJECT(e) FROM EmpBean e, DeptBean d WHERE e.dept.mgr MEMBER OF d.emps and d.deptno=?1

Related concepts

EJB query language

WHERE clause

Related tasks

Use EJB query