SQL Server and SDS


Grouping Results in LINQ

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.

Returning Raw JSON Data in Web API with Marten

Here's a trick to have Marten automatically deserialize JSON data only when you want it to.

Getting All the Results When Joining with LINQ

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.

Working with Enumerated Values in Entity Framework

If you decide on using an Enum with enumerated values in your Entity Framework class, here are the tools you'll need to make it work. But an enumerated value shouldn't be your first choice.

Shortcuts for Defining Anonymous Objects in C# and VB

Here are two ways to save some typing when defining anonymous objects. One only works in Visual Basic, though.

Data Clustering Using R

Find the patterns in your data sets using these Clustering.R script tricks.

Enforce Referential Integrity Between Documents in Marten

Marten is PostgreSQL-based, so take advantage of relational features where it makes sense. Here's an example.

Dealing with Complexity with DTOs and Command Objects

Peter starts off with a perfectly good solution to a problem but then complicates the problem . . . and ends up moving to a different design pattern. While on that journey he has some best practices around designing Data Transfer Objects.

Convert .NET Framework Lists into Dictionaries

You probably use ToList to convert your LINQ results into Lists. It's almost as easy to convert any collection into a Dictionary whose items you can retrieve by key.

Providing Multiple Solutions to a Problem

Sometimes life is like playing Whack-a-Mole: You write some code that solves a problem, and then someone comes along and makes the problem harder. Here's how to continuously integrate new solutions without having to rewrite your old solutions (much).

Tools for Data Access in Visual Studio

Whether you're building an application database or generating data access code, we've got a round-up of tools to make the job easier.

Find Out What Your Entity Framework Query Is Really Doing

You can turn on logging for your Entity Framework code with a single line. Configuring it to write to a file takes only a little bit more effort.

Looking at Entity Framework Core 1.0

There's more (and some less) in Entity Framework Core compared to Entity Framework 6, at least in version 1.0. While you can move to Entity Framework Core now, it might be too early for you.

Build Data Applications for the Universal Windows Platform Using Entity Framework and SQLite

Saving and retrieving data is a fundamental part of all but the simplest of applications. In this article, Nick walks through getting started using Entity Framework with SQLite to persist application data.

ORM-Less Data Storage with Document Databases and Marten

Document databases are a form of NoSQL database that may store all of the information for a given object in a single instance in the database.

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