Jpa query 질문이 있어서 올립니다.

다름이 아니라 제가 실행하고 돌린 것은 fetch 조인을 해도 쿼리가 하나가 나가는게 아니라 2개가 나갑니다.

select

        order0_.order_id as order_id1_6_0_,

        member1_.member_id as member_i1_4_1_,

        delivery2_.delivery_id as delivery1_2_2_,

        order0_.delivery_id as delivery4_6_0_,

        order0_.member_id as member_i5_6_0_,

        order0_.order_date as order_da2_6_0_,

        order0_.status as status3_6_0_,

        member1_.city as city2_4_1_,

        member1_.street as street3_4_1_,

        member1_.zipcode as zipcode4_4_1_,

        member1_.name as name5_4_1_,

        delivery2_.city as city2_2_2_,

        delivery2_.street as street3_2_2_,

        delivery2_.zipcode as zipcode4_2_2_,

        delivery2_.status as status5_2_2_ 

    from

        orders order0_ 

    inner join

        member member1_ 

            on order0_.member_id=member1_.member_id 

    inner join

        delivery delivery2_ 

            on order0_.delivery_id=delivery2_.delivery_id

Hibernate: 

    select

        order0_.order_id as order_id1_6_0_,

        member1_.member_id as member_i1_4_1_,

        delivery2_.delivery_id as delivery1_2_2_,

        order0_.delivery_id as delivery4_6_0_,

        order0_.member_id as member_i5_6_0_,

        order0_.order_date as order_da2_6_0_,

        order0_.status as status3_6_0_,

        member1_.city as city2_4_1_,

        member1_.street as street3_4_1_,

        member1_.zipcode as zipcode4_4_1_,

        member1_.name as name5_4_1_,

        delivery2_.city as city2_2_2_,

        delivery2_.street as street3_2_2_,

        delivery2_.zipcode as zipcode4_2_2_,

        delivery2_.status as status5_2_2_ 

    from

        orders order0_ 

    inner join

        member member1_ 

            on order0_.member_id=member1_.member_id 

    inner join

        delivery delivery2_ 

            on order0_.delivery_id=delivery2_.delivery_id

이런식으로 두개가 나가는데 이렇게 나가는 이유가 조회한 orderId 값이 달라서 이런건가요?? 그러기엔 영속성 안에 있는 값을 사용하면되는데 왜 다시 한번 호출이 되는지 궁금합니다.