-- strategy SINGLE_TABLE, Hibernate 7.4.13.Final

== persist 3 payments and 1 order: 4 INSERT statements
insert into st_payment (amount,currency,card_last4,network,payment_type,id) values (?,?,?,?,'CARD',?);
insert into st_payment (amount,currency,bank_code,iban,payment_type,id) values (?,?,?,?,'BANK',?);
insert into st_payment (amount,currency,provider,payment_type,id) values (?,?,?,'WALLET',?);
insert into st_order (payment_id,reference,id) values (?,?,?);

== select p from StPayment p   (polymorphic, returns 3 rows)
select p1_0.id,p1_0.payment_type,p1_0.amount,p1_0.currency,p1_0.bank_code,p1_0.iban,p1_0.card_last4,p1_0.network,p1_0.provider
from st_payment p1_0
  order by p1_0.id;

== from StCardPayment   (one subclass, returns 1 row)
select cp1_0.id,cp1_0.amount,cp1_0.currency,cp1_0.card_last4,cp1_0.network
from st_payment cp1_0
  where cp1_0.payment_type='CARD';

== select o from StOrder o join fetch o.payment   (association to the root)
select po1_0.id,po1_0.payment_id,p1_0.id,p1_0.payment_type,p1_0.amount,p1_0.currency,p1_0.bank_code,p1_0.iban,p1_0.card_last4,p1_0.network,p1_0.provider,po1_0.reference
from st_order po1_0
  join st_payment p1_0 on p1_0.id=po1_0.payment_id;