entities

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Linq to Entities with Subselect in select part

We are starting with a MVC project using EF. We will need write a lot of queries in LINQ using subselect and don\'t have figured out yet how this could be done.[详细]

2023-04-12 14:31 分类：问答
zend 1.11 doctrine2.1.1 - EntityNotFoundException entity was not found

I\'m having problems loading the 5th record from my collection ($arrRoleResources) of records, after I run this, which works fine:-[详细]

2023-04-08 19:02 分类：问答
Symfony 2 - Doctrine : OnetoOne relationship unclear

i\'ve been losing my nerves over it and spent a couple of hours searching here and there, unfortunately to no avail.[详细]

2023-04-07 17:03 分类：问答
how to get number of columns in an entity, like datatable?

I am new to entity framework. I want to get the number of columns of an entity object just like the old Datatable technique. İs it possible ?[详细]

2023-04-02 12:54 分类：问答
JPA2 Entities Caching

As it stands I am using a JSF request scoped bean to do all my CRUD operations. As I\'m sure you most likely know Tomcat doesn\'t provide container managed persistence so in my CRUD request bean I am[详细]

2023-03-30 19:34 分类：问答
core data : differences between managed object and entities?

i would like to understand a bit more Core Data, why do we \"fetch\" and search for entities while the entities are \"inside\" managed objects? For example :[详细]

2023-03-25 16:38 分类：问答
entity framework Add Entity adds child entities as well

I have a table \"Training\" that has a column \"CreatedBy\" which has a referential integrity to the \"User\" table. So \"CreatedBy\" is actually a \"User\" representing the user who inserted the trai[详细]

2023-03-25 04:32 分类：问答
LINQ to Entities Qyery Syntax: "IN" set operations

In SQL, you could write a query such as: SELECT NAME, QUOTA, SALES FROM SALESREPS WH开发者_如何学JAVAERE REP_OFFICE IN (11, 13, 52);[详细]

2023-03-23 13:10 分类：问答
JoinQueryOver with multiple tables with NHibernate

I can\'t build the lambda expressions in NHibernate JoinQueryOver that solve the SQL c开发者_Python百科ommand below:[详细]

2023-03-23 10:53 分类：问答
LightSwitch Linq To Entities query problem !

I\'m very new to Linq and Entities Framework. I\'m trying to create a WCF RIA Service into a LightSwitch Orders Management application I\'m creating. I\'ve already created 7 or 8 queries using Linq (w[详细]

2023-03-22 18:15 分类：问答