cascade

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Django: merging objects

I have such model: class Place(models.Model): name = models.CharField(max_length=80, db_index=True) city = models.ForeignKey(City)[详细]

2023-01-09 19:01 分类：问答
PostgreSQL 'Deferrable Delete' still hits constraint on Delete

I want to delete rows from two tables which have a dependence upon each other through a set of deferrable constraints. To simplify this post, I\'ve mocked up a simple DB schema.[详细]

2023-01-07 16:21 分类：问答
Grails cascading behavior

I am stuck at t开发者_运维百科his problem. The code looks ok to me(obviously I am missing something. The question is what it is?)[详细]

2023-01-07 11:41 分类：问答
NHibernate cascade update/insert

I have a Case class which exposes a Person object as follows: public class Case { public virtual Person Deceased {get;set;}[详细]

2023-01-07 10:55 分类：问答
Hibernate or Grails - Need help understanding cascade

I am a college student who do not have a lot of experience on Hibernate or Grails. The main question that I have is mainly about where does cascading apply, does it apply only to attributes where ther[详细]

2023-01-07 08:21 分类：问答
Hibernate all-delete-orphan on a child class with two parent classes

I\'m looking into a problem, where there are two \"parent\" classes, P and Q that cascade all-delete-orphan to a \"child\" class, C. My intuition in Hibernate tells this is really a bad idea and I am[详细]

2023-01-07 06:40 分类：问答
SQL Server Multiple cascade sequence

Assume Table A has two children tables, B and C with cascade delete between A-B, and cascade delete between A-C.[详细]

2023-01-07 05:52 分类：问答
NHibernate ManyToMany Relationship Cascading AllDeleteOrphan StackOverflowException

I have two objects that have a ManyToMany relationship with one another through a mapping table. Though, when I try to save it, I get a stack overflow ex开发者_开发知识库ception. The following is the[详细]

2023-01-03 05:43 分类：问答
MySQL InnoDB Cascade Rule that looks at 2 columns?

I have the following MySQL InnoDB tables... TABLE foldersA ( ID title ) TABLE foldersB ( ID title ) TABLE records ([详细]

2023-01-03 01:41 分类：问答
Hibernate cascade debug options

I have run into various StackOverflowErrors which occur during cascading. These have been 开发者_如何学Cextremely time consuming in debugging because I don\'t know which properties are being cascaded[详细]

2023-01-01 17:19 分类：问答