HQL 主附表关联查询，返回主表结果集

数据模型A

 

   

Public classs A{


@OneToMany(mappedBy = "a", fetch = FetchType.LAZY)
@Fetch(FetchMode.SUBSELECT)
@Cascade(value = { CascadeType.ALL })
List<B> bList=new ArrayList<B>

}
Public class B{
@ManyToOne(fetch = FetchType.EAGER)
@JoinColumn(name = "A_ID")
A a = new A();

}

    业务场景：查询条件中包含A的字段也包含B的字段，根据条件查询符合条件的A的结果集

 

     通常情况下不需要显示指定A，B表的关联字段

 

hql="select distinct a from A a  left outer join a.bList as  b where 1=1  and a.属性=值
and b.属性=值