Custom queries with CrudRepository

Question

I would like to custom my queries with CrudRepository :

This is my code:

@Repository
public interface CustomerRepository extends CrudRepository

        

Answer 1

Your first problem is in your JPQL:

@Query("UPDATE customer c SET c.firstName = :firstName WHERE c.id = :id")

type to

@Query("UPDATE Customer c SET c.firstName = :firstName WHERE c.id = :id")

That is because JPQL wants the query's table name to match your Entity Class name.

Another problem could be that you are missing the @Modifying annotation:

@Modifying
@Query("UPDATE customer c SET c.firstName = :firstName WHERE c.id = :id")
  Integer setNewFirstNameForId(@Param("firstName") String firstName, @Param("id") long id);   
}

Every time you want modify by query, you should add the @Modifying anotation because Spring needs to know about it.