UNION to JPA Query

Question

Is it possible to query \"UNION\" in JPA and even \"Criteria Builder\"?

I\'m looking for examples, but so far i got no result.

Does anyone have any examples

Answer 1

SQL supports UNION, but JPA 2.0 JPQL does not. Most unions can be done in terms of joins, but some can not, and some are more difficult to express using joins.

EclipseLink supports UNION.