final EntityGraph<CustomerOrder> entityGraph = getEntityManager().createEntityGraph(CustomerOrder.class);
entityGraph.addAttributeNodes("billingAddress", "shippingAddress", "orderDate", "orderState");
final Subgraph<BankAccount> bankAccountSubGraph = entityGraph.addSubgraph("bankAccount");
bankAccountSubGraph.addAttributeNodes("accountNo", "bank", "blz");
final Subgraph<Customer> customerSubgraph = entityGraph.addSubgraph("customer");
customerSubgraph.addAttributeNodes("firstName", "lastName");
final Subgraph<Order_Product> orderProductsSubgraph = entityGraph.addSubgraph("orderProducts");
orderProductsSubgraph.addAttributeNodes("amount");
final Subgraph<Product> productSubgraph = orderProductsSubgraph.addSubgraph("product");
productSubgraph.addAttributeNodes("productName", "price", "productNo");
      
TypedQuery<CustomerOrder> query = getEntityManager().createQuery("SELECT o FROM CustomerOrder o", CustomerOrder.class);
query.setHint("javax.persistence.fetchgraph", entityGraph);

Caused by: javax.persistence.PersistenceException: org.hibernate.exception.SQLGrammarException: could not prepare statement at org.hibernate.jpa.spi.AbstractEntityManagerImpl.convert(AbstractEntityManagerImpl.java:1763) at org.hibernate.jpa.spi.AbstractEntityManagerImpl.convert(AbstractEntityManagerImpl.java:1677) at org.hibernate.jpa.internal.QueryImpl.getResultList(QueryImpl.java:458)

select
        customeror0_.id as id1_4_0_,
        orderprodu1_.id as id1_5_1_,
        product2_.id as id1_7_2_,
        address3_.id as id1_0_3_,
        customer4_.id as id1_3_4_,
        address5_.id as id1_0_5_,
        bankaccoun6_.id as id1_1_6_,
        customeror0_.bankAccount as bankAcco6_4_0_,
        customeror0_.billingAddress as billingA7_4_0_,
        customeror0_.customer as customer8_4_0_,
        customeror0_.orderDate as orderDat2_4_0_,
        customeror0_.orderState as orderSta3_4_0_,
        customeror0_.shippingAddress as shipping9_4_0_,
        customeror0_.timeStamp as timeStam4_4_0_,
        customeror0_.version as version5_4_0_,
        orderprodu1_.amount as amount2_5_1_,
        orderprodu1_.customerOrder as customer5_5_1_,
        orderprodu1_.product as product6_5_1_,
        orderprodu1_.timeStamp as timeStam3_5_1_,
        orderprodu1_.version as version4_5_1_,
        orderprodu1_.customerOrder as customer5_4_0__,
        orderprodu1_.id as id1_5_0__,
        product2_.amount as amount2_7_2_,
        product2_.currency as currency3_7_2_,
        product2_.producer as producer8_7_2_,
        product2_.productName as productN4_7_2_,
        product2_.productNo as productN5_7_2_,
        product2_.timeStamp as timeStam6_7_2_,
        product2_.version as version7_7_2_,
        address3_.address as address2_0_3_,
        address3_.city as city3_0_3_,
        address3_.country as country4_0_3_,
        address3_.firstName as firstNam5_0_3_,
        address3_.housenumber as housenum6_0_3_,
        address3_.lastName as lastName7_0_3_,
        address3_.timeStamp as timeStam8_0_3_,
        address3_.version as version9_0_3_,
        address3_.zipCode as zipCode10_0_3_,
        customer4_.billingAddress as billingA7_3_4_,
        customer4_.email as email2_3_4_,
        customer4_.firstName as firstNam3_3_4_,
        customer4_.lastName as lastName4_3_4_,
        customer4_.shippingAddress as shipping8_3_4_,
        customer4_.shoppingCard as shopping9_3_4_,
        customer4_.timeStamp as timeStam5_3_4_,
        customer4_.version as version6_3_4_,
        address5_.address as address2_0_5_,
        address5_.city as city3_0_5_,
        address5_.country as country4_0_5_,
        address5_.firstName as firstNam5_0_5_,
        address5_.housenumber as housenum6_0_5_,
        address5_.lastName as lastName7_0_5_,
        address5_.timeStamp as timeStam8_0_5_,
        address5_.version as version9_0_5_,
        address5_.zipCode as zipCode10_0_5_,
        bankaccoun6_.accountNo as accountN2_1_6_,
        bankaccoun6_.bank as bank3_1_6_,
        bankaccoun6_.bic as bic4_1_6_,
        bankaccoun6_.blz as blz5_1_6_,
        bankaccoun6_.customer as customer9_1_6_,
        bankaccoun6_.iban as iban6_1_6_,
        bankaccoun6_.timeStamp as timeStam7_1_6_,
        bankaccoun6_.version as version8_1_6_ 
    from
        CustomerOrder customeror0_ 
    left outer join
        Order_Product orderprodu1_ 
            on customeror0_.id=orderprodu1_.customerOrder 
    left outer join
        Product product2_ 
            on orderprodu1_.product=product2_.id,
        
    left outer join
        Address address3_ 
            on customeror0_.billingAddress=address3_.id 
    left outer join
        Customer customer4_ 
            on customeror0_.customer=customer4_.id 
    left outer join
        Address address5_ 
            on customeror0_.shippingAddress=address5_.id 
    left outer join
        BankAccount bankaccoun6_ 
            on customeror0_.bankAccount=bankaccoun6_.id