Hibernate 查询

1.HQL 查询部分字段
public class Persion() {
    private String id;
    private String name;
    public Persion(id, name) {
        ...
    }
}
hql: select new Persion(p.id, p.name) from persion;

2.标量查询返回对象(Persion不需要映射文件)
SQL: select id, name from t_persion;
执行 session.createSQLQuery(sql).setResultTransformer(Transformers.aliasToBean(Persion.class)).list();