SQLQuery query = sessionFactory.getCurrentSession().createSQLQuery(hql);用getCurrentSession()执行不了SQL 若是用getCurrentSession()会报错:hibernate4不能转换为hibernate3sql
Query query = sessionFactory.openSession().createQuery(hql);能够执行sqlsession
createSQLQuery(hql)执行原生SQL,即HQLhibernate
createQuery(hql)执行sqlget