orm
group by join and aggregate (linq)
I have a problem with a LINQ query and don\'t know how to solve it :/ I\'ve got two tables. One is with attributes and the second are rows from attributes, but I need to sum hours from rows and get i[详细]
2023-04-08 18:27 分类：问答own ORM: database records in case of JOIN?
We are doing our own framework with ORM capability. The database tables are classes now, but how about records? Lets imagine two tables:[详细]
2023-04-08 06:24 分类：问答Three Entity Constraint in Object Role Model in NORMA
I am trying to model the constraint depicted in the ORM diagram below using NORMA for Visual Studio 2010:[详细]
2023-04-08 05:17 分类：问答VB.NET open source ORM (Like Doctrine for PHP)
What is the most doctrine-like ORM for VB.NET? With good documentation. What are the most popular object relational mappers (ORMs) for VB.NET which is like 开发者_运维技巧Doctrine (PHP) and have a go[详细]
2023-04-07 23:11 分类：问答Can BLTookit Generate Db and Tables
I am currently using Entity Framework Code First to generate my MySQL tables and schema from my classes. However, I would like to switch to BlToolkit. Does this ORM support table generation from class[详细]
2023-04-07 18:10 分类：问答django one-to-one relationship defaulting to existing object - is this what is supposed to happen?
I have three models, related with one-to-one relationships. So far as relevant, the code for them is:[详细]
2023-04-07 10:51 分类：问答Which is the fastest performing way to avoid n+1 issues and why?
I\'m looking to add some utility methods to help avoid a lot of n+1 issues in a legacy application. The common pattern is this:[详细]
2023-04-07 03:09 分类：问答nhibernate to linq 3.2 generate error sql on || operator
now i\'m using nhibernate 3.2 as the orm,when i write code like this: PostReaderBll postReaderBll=new PostReaderBll();[详细]
2023-04-07 00:28 分类：问答where do i put my method for adding users to groups? the model? the mapper?
My question is mostly about OOP and ORM design. I\'m creating models in Zend for Users and Groups, and using mappers for the db (and also using dependency injection). I have a relational table, user_g[详细]
2023-04-06 20:46 分类：问答How do I map lists of nested objects with Dapper
I\'m currently using Entity Framework for my db access but want to have a look at Dapper. I have classes like this:[详细]
2023-04-06 19:08 分类：问答
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