Named Query Or Native Query or Query Which one is better in performance point of view?

Question

Which one is better among following(EJB 3 JPA)

//Query

a). getEntityManager().createQuery(\"select o from User o\");

//Named Query where

Answer 1

For me, the better is obviously the first two one, that is JPQL Queries - the second meaning the entity manager will compile the queries (and validate them) while loading the persistence unit, while the first would only yield errors at execution time.

You can also get support in some IDE, and it support the object notation (eg: select b from EntityA a left join a.entityB b) and some other oddities introduced by the object-relational mapping (like collections, index, etc).

On the other hand, use Native queries in last resort in corner case of JPQL (like window function, such as select id, partition by (group_id) from table)