hibernate 6 부터는 항상 distinct 가 적용된다고 합니다. 따라했는데 결과가 다르게 나와서 한참 해맸네요

원문입니다.

DISTINCT

Starting with Hibernate ORM 6 it is no longer necessary to use distinct in JPQL and HQL to filter out the same parent entity references when join fetching a child collection. The returning duplicates of entities are now always filtered by Hibernate.

Which means that for instance it is no longer necessary to set QueryHints#HINT_PASS_DISTINCT_THROUGH to false in order to skip the entity duplicates without producing a distinct in the SQL query.

From Hibernate ORM 6, distinct is always passed to the SQL query and the flag QueryHints#HINT_PASS_DISTINCT_THROUGHhas been removed.