composite-key

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How to query a couchdb view using a composite key?

I have a couchdb view \"record_by_date_product\" with the following definition: function(doc) { emit([doc.logtime, doc.product_id], doc);[详细]

2023-02-03 20:50 分类：问答
Composite database indexes

I\'m looking for confirmation of my understanding of composite indexes in databases - specifically in relation to SQL Server 2008 R2, if that makes a difference.[详细]

2023-02-03 16:03 分类：问答
Hibernate One-to-One Mapping Using Composite Key and Non-primary Property

So here is my problem. I have these two tables which map fine by themselves. There are some additional fields which I removed because they are ir开发者_Go百科relevant. I need a one-to-one mapping betw[详细]

2023-02-01 13:36 分类：问答
Mapping a composite primary key with a foreign key relation in Nhibernate

a company I am working for is using an ERP and it\'s legacy database is Oracle. Until now I\'ve used packages (oracle stored procedures) to access data but during the years the number has grown consis[详细]

2023-01-31 11:10 分类：问答
Datanucleus fetchgroup composite key

I am trying to map a class with composite key in datanucleus. The primary key is composed of two foreign keys and I can\'t seem to be able to include these foreign classes in the fetchgroup:[详细]

2023-01-29 06:32 分类：问答
Query on one of attributes of composite key in database

A composite key contains two columns: col1, and col2. If I run a query on only col1, will the index be used? and why[详细]

2023-01-27 14:54 分类：问答
JPA, Mixed surrogate key with foreign key and sequence number

I\'ve got two tables: DOCU开发者_Python百科MENT -------- DOC_ID (PK) . . . SECTION ------- DOC_ID (FK, PK)[详细]

2023-01-27 07:12 分类：问答
Entity Framework -- Dependent objects not deleted before principal object when cascade deleting composite key entities

I\'m having an issue with cascade deletion of dependent objects with composite keys.Specifically, the emitted SQL instructions by EF tries to delete the principle entity before the dependent entity.[详细]

2023-01-26 20:07 分类：问答
How can I use generated value within composite keys?

I have two classes documentlog and documentversion(with primary keys: int doc_id and int docVersionID) with a many-to-one relationship. I used a composite key class called CompundKey to manage the com[详细]

2023-01-24 10:28 分类：问答
NHibernate: Composite key many-to-one mapping: Can't resolve property (foreign key component)

I hope anyone can help. I have to develop up against this third party database and I am kind of stuck with their crappy design. Still, I want to use NHibernate so I will have to jump through hoops.[详细]

2023-01-19 21:30 分类：问答