Hibernate_查询语句_HQL

• HQL：Hibernate Query Language
• 面向对象的查询语言
• Session session

1 基础查询

        //String hql = " from  com.hkls.domain.Customer ";完整写法
        //String hql = " from  Customer "; 简单写法

        String hql = " from  Customer "; 

        Query query = session.createQuery(hql); 

        List list = query.list();

3 条件查询

        //第一种：按位置绑定参数
        String hql1 = " from Customer where id =? ";

        Query query = session.createQuery(hql2);

        query.setParameter(0, 2l);

        List list = query.list();

        //第二种：按名称绑定参数
        String hql2 = " from Customer where id = :id ";

        Query query = session.createQuery(hql2);


        query.setParameter("id", 2l);


        List list = query.list();