EJB specification and WebSphere query language comparison

WebSphere® Application Server extends the Enterprise JavaBeans (EJB) query language with elements of its own.

WebSphere Application Server supports the following extensions to the EJB query language.

Table 1. Extensions supported for the EJB query language . The product supports the following extensions.
Item	Query type
Delimited identifiers
Dependent Value object attributes used in path expressions
EJB Inheritance
EXISTS predicate
Java methods: EJB bean methods or value object methods	dynamic query only
Multiple element select clauses	dynamic query only
SQL Date/time expressions
Subqueries, group by, and having clauses