About a month ago, my open-source project EntityFramework.Exceptions failed to build on AppVeyor, the continuous integration service that I have been using for several years.

Consuming a GraphQL api in C# is straightforward with either using HttpClient directly or using a client library such as GraphQL.Client but both suffer from the same problems: The GraphQL queries do not go through any compile-time checking, and any mistake in the query isn’t discovered until you execute the query at runtime. For example, to query SpaceX GraphQL API for all missions where the manufacturer is Orbital ATK you need to run the following query:

LINQPad.QueryPlanVisualizer is a custom visualizer for LINQPad that shows a database query plan inside LINQPad. It also shows missing indexes for the query that you can create directly from LINQPad. Since then, a new major version, LINQPad 6, was released that targets .NET Core 3 and .NET 5 and uses Entity Framework Core (as well as LINQ-to-SQL) for running Linq queries. To support these changes, I have just released a new version of LINQPad.