Will a native SQL query be executed within a related table or association?

Yes, a native SQL query can be executed within a related table or association, but with some nuances. In Java ORM frameworks, such as Hibernate, native queries can be used to retrieve data, including related entities.

For example, if you have entities with a @OneToMany relationship, you can write a native SQL query with JOIN to fetch data from both tables. However, ORM may not automatically map the results to objects if the query is complex, so it's often necessary to use ResultSetMapping or DTOs to handle the result.

Example in Hibernate:

String sql = "SELECT o.*, i.* FROM orders o JOIN items i ON o.id = i.order_id WHERE o.id = :orderId";
List<Object[]> results = entityManager.createNativeQuery(sql)
    .setParameter("orderId", 1)
    .getResultList();

for (Object[] row : results) {
    // row[0] - order data, row[1] - item data
}

Thus, a native SQL query within a related table is possible but requires additional result processing.