cascading-deletes

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SQL 'DELETE CASCADE'

I have a table B that has a foreign key to table A, and now I want to do a sorta \"DELETE CASCADE\" thingie on A, but PostgreSQL won\'t accept the following:[详细]

2023-02-26 13:49 分类：问答
Hibernate Cascading Delete Not working as expected

I am using hibernate 3 and attempting to delete a record in the database, and the delete is not working as I would expect.The schema hibernate is working against (in pseudocode):[详细]

2023-02-25 17:07 分类：问答
How do you ensure Cascade Delete is enabled on a table relationship in EF Code first?

I would like to enable CASCADE DELETE on a table using code-first. When the model is re-created from scratch, there is no CASCADE DELETE set even though the relationships are set-up automatically. The[详细]

2023-02-20 07:18 分类：问答
EF 4.1 RC: Weird Cascade Delete

I have to admit, the features of EF 4.1 RC Codefirst, DataAnnotations and FluentAPI are still overwhelming to me. Sometimes I really don\'t know what I am doing ;-) Please see the following POCOs:[详细]

2023-02-18 23:25 分类：问答
How to set cascade on SQLite database with compound primary foreign key?

I have a db that\'s structured with a supertype table as well as subtype tables like so: EVENT PatientId INTEGER,[详细]

2023-02-18 10:30 分类：问答
Enable cascading deletes in EF Code First without exposing foreign key

When performing a delete of a one-many relationship without exposing the foreign key, EF deletes the parent record and tries to null the foreign key on the child records. This of course causes an erro[详细]

2023-02-17 18:23 分类：问答
How to use delete cascade on MySQL MyISAM storage engine?

I have one table that I had called equipment, and 8 other tables that I had called equipment_child1 and so on until equipment_child8.[详细]

2023-02-17 06:50 分类：问答
NHibernate cascade delete

Let me begin with showing the mapping: Parent: <bag name=\"Communicatiekanalen\" table=\"COMMUNICATIEKANAAL\" inverse=\"true\" cascade=\"delete\" lazy=\"true\" >[详细]

2023-02-13 18:33 分类：问答
symfony 1.4 chaining preDelete events for related tables

Is there a way to chain the preDelete() events in Symfony 1.4? I have two tables: one master and one slave. In schema.yml I have defined them so that the slave records CASCADE the Deletion when a mas[详细]

2023-02-13 00:56 分类：问答
Rails: Delete User without losing associations (or other methods of letting Users leave)

I have a Rails application that lets Users create various \"judgements\", everything is a bit interweaved, we have several classes that are connected to the User class.[详细]

2023-02-13 00:20 分类：问答