Spring JPA with native query and data projection mapping the wrong columns into the projected interface

Question

I\'ve got a bit of a bizarre problem that I can\'t figure out why it\'s happening. I\'m sure I did something wrong, because this is my first time using a data projection and I\'

Answer 1

I had the same problem and i solved by odering the query columns alphabetically.

In you case:

public interface OrderTrackingRepository extends JpaRepository {
  @Query( nativeQuery = true,
          value = "SELECT a.accountnumber, o.date_of_order, t.tracking_id " +
                  "FROM account as a " +
                  "INNER JOIN orders as o USING (account_id) " +
                  "INNER JOIN tracking as t USING (tracking_id) " +
                  "WHERE a.accountnumber = :acctnum")
   Collection findOrderInfoForAccount(@Param("acctnum") acctNumber, Class type);
}

So you will get:

getAccountNumber() -> accountnumber getDateOfOrder() -> date_of_order getTrackingId() -> tracking_id