Question

Hibernate新手提醒。对于后面提到的sql查询，等效的hibernate查询是什么？

SELECT DISTINCT meetupid 
FROM   meetups 
   INNER JOIN friends 
           ON meetups.participantphonenumber = friends.friendphonenumber 
              AND friends.userphonenumber = :phoneNumber

我尝试过：

SELECT DISTINCT meetUp.meetUpId 
FROM MeetUp meetUp 
   INNER JOIN Friendship friends 
           ON meetUp.participantPhoneNumber = friends.friendPhoneNumber 
              AND friends.userPhoneNumber = :phoneNumber

但这会提供 ERROR: Path expected for join! 。

注意：表格 meetups 和 friends 与任何外键都无关。

TIA

Answer 1

这不是使用HQL的好例子，因为@AVolpe在他的评论中说。但您应该能够使用子查询在HQL中执行此操作。但实际上......映射或使用SQL。

select m.meetupid from Meetup m  
    where m.participantPhoneNumber in (
        select f.friendPhoneNumber from Friendship f
            where f.userPhone = :phoneNumber)

给定sql查询的等效hibernate查询

1 个答案: