The RDBMS formerly known as SQL Server vNext is now out as SQL Server 2017 Community Technology Preview 2.0.
Peter follows up -- yet again – on a column on how to group results with LINQ using the SQL-like syntax with the same solution using the method-based syntax. And, no, you're not seeing double.
If you have a process that needs to be performed -- but with variations -- then implementing the Template Method pattern will give you simpler, more extensible code. You’ll also recognize this pattern from all the times you work with it in the .NET Framework.
Peter follows up on advice for joining collections with LINQ and getting all of the results, but this time, he uses the method-based syntax.
The custom formatters in the .NET Framework provide a more seamless way to mix traditional and custom formatting situations.
It's at 1.0, with a version supporting Visual Studio 2017 to follow some time in May.
- By Michael Domingo
The Entity Framework DbEntityEntry object lets you do all sorts of things you probably didn't think were possible, including getting the latest data from the database (without losing your current data) and invoking the .NET Framework validation subsystem.
Let's use this classical statistics technique -- and some R, of course -- to get to some of the latent variables hiding in your data.
- By James McCaffrey
If you're not using the Entity Framework DbCollectionEntry object when working with an entity class's related objects, then your application is running too slow. Using DbCollectionEntry lets you asynchronously retrieve related objects and get only the objects you want.
Entity Framework Core doesn't have lazy loading (at least, not yet). But you can fake it by using explicit loading, though it doesn't work quite the way you might want. In fact, it's probably a good idea to use this in Entity Framework 6.
If you want to ensure that the right code is loaded at the right time (and only loaded when you need it), you can use TypeScript code to organize your code into modules. As a side benefit, managing your script tags will get considerably easier.
Some questions can only be answered by organizing your data into groups and then finding groups that contain particular members or have particular properties.
Complex queries can be solved with a combination of simpler LINQ queries, anonymous objects and the Group/By/Into clauses. Using Group/By/Into will also give you the best possible performance for those complex queries.
Here's a trick to have Marten automatically deserialize JSON data only when you want it to.
- By Jason Roberts
When you want to find all the objects that are missing a corresponding object, then you need the LINQ equivalent of an outer join. Here, step by painful step, is how to build that query.