19:04 초 where in 쿼리 대신 where array_conatins 쿼리가 나왔습니다. (스프링 부트 3.1)

[질문 템플릿]
1. 강의 내용과 관련된 질문인가요? (예)
2. 인프런의 질문 게시판과 자주 하는 질문에 없는 내용인가요? (예)
3. 질문 잘하기 메뉴얼을 읽어보셨나요? (예)

[질문 내용]
현재 스프링 부트 3.1 로 강의를 따라가고 있습니다.

default_batch_fetch_size:10 을 설정해서 나가는 쿼리가 줄어드는 것을 확인했습니다만, 쿼리가 두 개가 아니고 총 세 개가 나왔습니다.

023-06-13T23:24:02.666+09:00 DEBUG 68750 --- [nio-8080-exec-5] org.hibernate.SQL                        : 
    select
        o1_0.order_id,
        d1_0.delivery_id,
        d1_0.city,
        d1_0.street,
        d1_0.zipcode,
        d1_0.status,
        m1_0.memeber_id,
        m1_0.city,
        m1_0.street,
        m1_0.zipcode,
        m1_0.name,
        o1_0.order_date,
        o1_0.status 
    from
        orders o1_0 
    join
        member m1_0 
            on m1_0.memeber_id=o1_0.member_id 
    join
        delivery d1_0 
            on d1_0.delivery_id=o1_0.delivery_id offset ? rows fetch first ? rows only
2023-06-13T23:24:02.676+09:00  INFO 68750 --- [nio-8080-exec-5] p6spy                                    : #1686666242676 | took 2ms | statement | connection 8| url jdbc:h2:tcp://localhost/~/springbootjpa
select o1_0.order_id,d1_0.delivery_id,d1_0.city,d1_0.street,d1_0.zipcode,d1_0.status,m1_0.memeber_id,m1_0.city,m1_0.street,m1_0.zipcode,m1_0.name,o1_0.order_date,o1_0.status from orders o1_0 join member m1_0 on m1_0.memeber_id=o1_0.member_id join delivery d1_0 on d1_0.delivery_id=o1_0.delivery_id offset ? rows fetch first ? rows only
select o1_0.order_id,d1_0.delivery_id,d1_0.city,d1_0.street,d1_0.zipcode,d1_0.status,m1_0.memeber_id,m1_0.city,m1_0.street,m1_0.zipcode,m1_0.name,o1_0.order_date,o1_0.status from orders o1_0 join member m1_0 on m1_0.memeber_id=o1_0.member_id join delivery d1_0 on d1_0.delivery_id=o1_0.delivery_id offset 0 rows fetch first 100 rows only;
2023-06-13T23:24:02.681+09:00 DEBUG 68750 --- [nio-8080-exec-5] org.hibernate.SQL                        : 
    select
        o1_0.order_id,
        o1_0.order_item_id,
        o1_0.count,
        o1_0.item_id,
        o1_0.order_price 
    from
        order_item o1_0 
    where
        array_contains(?,o1_0.order_id)
2023-06-13T23:24:02.689+09:00  INFO 68750 --- [nio-8080-exec-5] p6spy                                    : #1686666242689 | took 0ms | statement | connection 8| url jdbc:h2:tcp://localhost/~/springbootjpa
select o1_0.order_id,o1_0.order_item_id,o1_0.count,o1_0.item_id,o1_0.order_price from order_item o1_0 where array_contains(?,o1_0.order_id)
select o1_0.order_id,o1_0.order_item_id,o1_0.count,o1_0.item_id,o1_0.order_price from order_item o1_0 where array_contains('ar2: ARRAY [CAST(1 AS BIGINT), CAST(2 AS BIGINT), NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL]',o1_0.order_id);
2023-06-13T23:24:02.690+09:00 DEBUG 68750 --- [nio-8080-exec-5] org.hibernate.SQL                        : 
    select
        i1_0.item_id,
        i1_0.dtype,
        i1_0.category_item_id,
        i1_0.name,
        i1_0.price,
        i1_0.stock_quantity,
        i1_0.author,
        i1_0.isbn,
        i1_0.artist,
        i1_0.etc 
    from
        item i1_0 
    where
        array_contains(?,i1_0.item_id)
2023-06-13T23:24:02.691+09:00  INFO 68750 --- [nio-8080-exec-5] p6spy                                    : #1686666242691 | took 0ms | statement | connection 8| url jdbc:h2:tcp://localhost/~/springbootjpa
select i1_0.item_id,i1_0.dtype,i1_0.category_item_id,i1_0.name,i1_0.price,i1_0.stock_quantity,i1_0.author,i1_0.isbn,i1_0.artist,i1_0.etc from item i1_0 where array_contains(?,i1_0.item_id)
select i1_0.item_id,i1_0.dtype,i1_0.category_item_id,i1_0.name,i1_0.price,i1_0.stock_quantity,i1_0.author,i1_0.isbn,i1_0.artist,i1_0.etc from item i1_0 where array_contains('ar3: ARRAY [CAST(1 AS BIGINT), CAST(2 AS BIGINT), CAST(3 AS BIGINT), CAST(4 AS BIGINT), NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL]',i1_0.item_id);

수강 중에 제가 따라 작성한 코드를 스프링부트 2.4.1에 그대로 옮겨보니 강의 내용대로 where in 쿼리가 나오는 것을 확인했습니다.

스프링부트 버전 차이에서 나오는 쿼리가 달라진 것 같은데, 제 생각이 맞을까요?

답변 확인 : 

빠르게 답변해주셔서 감사합니다!!

덕분에 array_contains 로 최적화된 이유를 쉽게 이해할 수 있었습니다. (Hibernate에서 최적화를 했었었군요!)

아 그리고 강의 내용에서 쿼리 세 개 나온다는 것을 확인했습니다(잘못 본 것에 대해 질문글에서 수정을 해놨어야 했는데 빼놓지 않았었네요 ㅠㅠ)

다시 한번 상세한 답변 정말 감사드립니다.