PostgreSQL和Hibernate：在DELETE CASCADE上不起作用

Question

我有一个名为 native 的查询，看起来像这样：

@NamedNativeQuery(name = "deleteRecipes", query = "DELETE FROM RECIPE WHERE rcp_acc_identifier IN (?1)")

这些是配方表的重要部分：

                                              Table "public.recipe"
         Column          |            Type             |                        Modifiers                        
-------------------------+-----------------------------+---------------------------------------------------------
 rcp_pf_id_photodata     | bigint                      | 
 rcp_pf_id_thumbnaildata | bigint                      | 
Indexes:
    "fk_rcp_pf_id_photodata_idx" btree (rcp_pf_id_photodata)
    "fk_rcp_pf_id_thumbnaildata_idx" btree (rcp_pf_id_thumbnaildata)
Foreign-key constraints:
    "fk_rcp_pf_id_photodata" FOREIGN KEY (rcp_pf_id_photodata) REFERENCES persistable_file(pf_id) ON DELETE CASCADE
    "fk_rcp_pf_id_thumbnaildata" FOREIGN KEY (rcp_pf_id_thumbnaildata) REFERENCES persistable_file(pf_id) ON DELETE CASCADE

当我执行上面的查询时，配方将被删除，但不会删除persistable_file中的数据。为什么会这样呢？ 附加信息：创建数据库时，我没有设置ON DELETE CASCADE。稍后，我首先从上方删除了两个约束，然后通过附加的ON DELETE CASCADE指令再次添加了约束。这可能是为什么不删除数据的问题吗？