JPQL/HQL 删除查询与 spring 数据 jpa

Question

I'm not really familiar with JPQL/HQL, so the question might be a bit dumb, I'm trying to write a delete query with string jpa.

I have GeneratedStatement object which has GeneratedStatementId object which consists of createdDate .

My query should look something like this:

@Query(value = "DELETE FROM EODGeneratedStatement s WHERE s.createdDate < :expiryDate")
int deleteByIdCreatedDateBefore(LocalDate expiryDate);

But I think it lacks the GeneratedStatementId object in it, and I'm not sure how to add it. It should be like s.getGeneratedStatementId().createdDate something I believe

Answer 1

I assume you have an @Entity named GeneratedStatement which has GeneratedStatementId POJO object in it which contain variable createdDate .

If you are looking for a @OneToOne Mapping between GeneratedStatement and GeneratedStatementId , below query should work.

@Query(value = "DELETE FROM GeneratedStatement s left join 
                        s.GeneratedStatementId sid WHERE sid.createdDate < :expiryDate")
int deleteByIdCreatedDateBefore(LocalDate expiryDate);

@OneToOne Mapping and FetchType is Lazy ,

@Query(value = "DELETE FROM GeneratedStatement s left join fetch 
                        s.GeneratedStatementId sid WHERE sid.createdDate < :expiryDate")