eager-loading

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why is this rails association loading individually after an eager load?

I\'m trying to avoid the N+1 queries problem with eager loading, but it\'s not working. The associated models are still being loaded individually.[详细]

2022-12-17 11:59 分类：问答
GAE datastore eager loading in python api

I have two models in relation one-to-many: class Question(db.Model): questionText = db.StringProperty(multiline=False)[详细]

2022-12-17 02:17 分类：问答
Rails Eager Loading on All Finds

OK, I\'ve been playing around with some of the eager loading things, and have 2 models something like:[详细]

2022-12-16 14:04 分类：问答
How do I set the Fetchmode on all assocations of a nHibernate ICriteria in one go?

I have an object that has many assocations to other objects. All of these are fetched lazily by nHibernate, which is good in almost all cases.[详细]

2022-12-14 13:43 分类：问答
How can I do an eager load when I don't know the name of the property I want to load?

I have a generic repository and when I\'m using a DoQuery method to select objects from the database, I need to load some of the related entities in order to开发者_如何学Go not get nulls in the place[详细]

2022-12-14 13:14 分类：问答
Eager loading / prefetching many-to-many without LoadOptions - Linq to Sql

I\'ve got a situation where I need to prefetch some entities through a many-to-many relationship. So it\'s like the classic BlogPost <- BlogPostTag -> Tag situation.[详细]

2022-12-14 03:22 分类：问答
Rails ActiveRecord - eager loading (sort of) when using 'build' from has_many

I have a situation where children are built but not saved, and are then being used in the view with references to the parent. This leads to extensive use of rails record caching. I\'d like to have the[详细]

2022-12-13 17:52 分类：问答
Eager Loading on tracked items?

I have an element bound to an entity (C开发者_开发知识库ontact) that exposes some navigation properties.[详细]

2022-12-13 06:38 分类：问答
Why is ToLookup() dependent on load options in Linq2Sql?

Lets say I have 3 tables Posts, PostTags and Tags defining a many-to-many relationship. I want to get a lookup table that will give me all the Posts related to a given tag so I use the following code:[详细]

2022-12-11 11:55 分类：问答
How to do the opposite of eager-loading in Entity Framework?

I understand in Entity Framework you can specify relationships that need to be joined with Include: Product firstProduct =[详细]

2022-12-10 10:02 分类：问答