在 jpa 中连接表和子查询

Question

我有两个表 T1 和 T2，其中 t2 是子查询的结果

说清楚

select * from T1 join (select * from T3 where foo is not null) T2 on T1.key = T2.fk

Answer 1

SELECT T1 FROM Table1Entity T1 JOIN Table1Entity.table2EntityAssociationField T2 WHERE T2.foo IS NOT NULL

在哪里

@Entity
class Table1Entity {

      @OneToOne
      Table2Entity table2EntityAssociationField;

}

和

@Entity
class Table2Entity {

     private Object foo;

}