JPA questions

Hibernate:
    select
        count(reportqs0_.REPORT_ID) as col_0_0_
    from
        reports reportqs0_
    inner join
        reports_projects projects1_
            on reportqs0_.REPORT_ID=projects1_.report_id
    inner join
        projects project2_
            on projects1_.project_id=project2_.PROJECT_ID
    inner join
        tblProject_permission permission3_
            on project2_.CODE=permission3_.project
    where
        permission3_.user_id=?
        and (
            reportqs0_.cleanTxt like ?
            or reportqs0_.REPORT_ID=-1
        )
        and permission3_.user_id=?
        and (
            reportqs0_.TXT like ?
            or reportqs0_.REPORT_ID=-1
        )
    group by
        reportqs0_.REPORT_ID

actually removing groupby gives the expected result