How to get unique results in JPA

I am using this JPA-Query (EclipseLink):

SELECT e FROM Entity e GROUP BY e.label

But i get all rows in my result开发者_如何学C instead of only the unique labels.

My second approach was using DISTINCT like i did successfully in another function which counts the distinct values, but i don't know how apply this to get the Entities:

SELECT COUNT(DISTINCT e.label) FROM Entity e

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From the Hibernate JP-QL documentation:

select distinct e.label from Entity e

However, it seems you want the full entities, which I don't think is possible.

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actually, it is possible, for example :

    @NamedQuery(name = "WorkingDay.WorkersAtADay", query = "SELECT DISTINCT w.worker FROM WorkingDay w WHERE w.date = :Date"),