{"id":28750,"date":"2020-06-25T09:47:30","date_gmt":"2020-06-25T16:47:30","guid":{"rendered":"https:\/\/devblogs.microsoft.com\/dotnet\/?p=28750"},"modified":"2020-06-25T09:47:30","modified_gmt":"2020-06-25T16:47:30","slug":"announcing-entity-framework-core-efcore-5-0-preview-6","status":"publish","type":"post","link":"https:\/\/devblogs.microsoft.com\/dotnet\/announcing-entity-framework-core-efcore-5-0-preview-6\/","title":{"rendered":"Announcing Entity Framework Core EFCore 5.0 Preview 6"},"content":{"rendered":"

Today, the Entity Framework Core team announces the sixth preview release of EF Core 5.0<\/a>. This release includes split queries for related collections, a new “index” attribute, improved exceptions related to query translations, IP address mapping, exposing transaction id for correlation, and much more.<\/p>\n

Prerequisites<\/h2>\n

EF Core 5.0 will not<\/em> run on .NET Standard 2.0 platforms, including .NET Framework.<\/strong><\/p>\n

The previews of EF Core 5.0 require .NET Standard 2.1<\/a>. This means that EF Core 5.0 will run on .NET Core 3.1 and does not<\/em> require .NET 5. To summarize: EF Core 5.0 runs on platforms that support .NET Standard 2.1<\/a>.<\/p>\n

The plan is to maintain .NET Standard 2.1 compatibility through the final release.<\/strong><\/p>\n

Be a part of .NET 5<\/h2>\n

The .NET documentation team is reorganizing .NET content<\/a> to better match the workloads you build with .NET. This includes a new .NET Data landing page<\/a> that will link out to data-related topics ranging from EF Core to APIs, Big Data, and Machine learning. The planning and execution will be done completely in the open on GitHub. This is your opportunity to help shape the hierarchy and content to best fit your needs as a .NET developer. We look forward to your contributions!<\/p>\n

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How to get EF Core 5.0 previews<\/h2>\n

EF Core is distributed exclusively as a set of NuGet packages.\nFor example, to add the SQL Server provider to your project, you can use the following command using the dotnet tool:<\/p>\n

dotnet<\/span> add<\/span> package<\/span> Microsoft<\/span>.EntityFrameworkCore<\/span>.SqlServer<\/span> --version<\/span> 5.0<\/span>.0-preview.6.20312.4<\/span>\r\n<\/code><\/pre>\n
This following table links to the preview 6 versions of the EF Core packages and describes what they are used for.<\/p>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Package<\/strong><\/th>\nPurpose<\/strong><\/th>\n<\/tr>\n<\/thead>\n
Microsoft.EntityFrameworkCore<\/a><\/td>\nThe main EF Core package that is independent of specific database providers<\/td>\n<\/tr>\n
Microsoft.EntityFrameworkCore.SqlServer<\/a><\/td>\nDatabase provider for Microsoft SQL Server and SQL Azure<\/td>\n<\/tr>\n
Microsoft.EntityFrameworkCore.SqlServer.NetTopologySuite<\/a><\/td>\nSQL Server support for spatial types<\/td>\n<\/tr>\n
Microsoft.EntityFrameworkCore.Sqlite<\/a><\/td>\nDatabase provider for SQLite that includes the native binary for the database engine<\/td>\n<\/tr>\n
Microsoft.EntityFrameworkCore.Sqlite.Core<\/a><\/td>\nDatabase provider for SQLite without<\/em> a packaged native binary<\/td>\n<\/tr>\n
Microsoft.EntityFrameworkCore.Sqlite.NetTopologySuite<\/a><\/td>\nSQLite support for spatial types<\/td>\n<\/tr>\n
Microsoft.EntityFrameworkCore.Cosmos<\/a><\/td>\nDatabase provider for Azure Cosmos DB<\/td>\n<\/tr>\n
Microsoft.EntityFrameworkCore.InMemory<\/a><\/td>\nThe in-memory database provider<\/td>\n<\/tr>\n
Microsoft.EntityFrameworkCore.Tools<\/a><\/td>\nEF Core PowerShell commands for the Visual Studio Package Manager Console; use this to integrate tools like scaffolding<\/a> and migrations<\/a> with Visual Studio<\/td>\n<\/tr>\n
Microsoft.EntityFrameworkCore.Design<\/a><\/td>\nShared design-time components for EF Core tools<\/td>\n<\/tr>\n
Microsoft.EntityFrameworkCore.Proxies<\/a><\/td>\nLazy-loading and change-tracking proxies<\/td>\n<\/tr>\n
Microsoft.EntityFrameworkCore.Abstractions<\/a><\/td>\nDecoupled EF Core abstractions; use this for features like extended data annotations defined by EF Core<\/td>\n<\/tr>\n
Microsoft.EntityFrameworkCore.Relational<\/a><\/td>\nShared EF Core components for relational database providers<\/td>\n<\/tr>\n
Microsoft.EntityFrameworkCore.Analyzers<\/a><\/td>\nC# analyzers for EF Core<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
We also published the 5.0 preview 6 release of the Microsoft.Data.Sqlite.Core<\/a> provider for ADO.NET<\/a>.<\/p>\n
Installing the EF Core Command Line Interface (CLI)<\/h2>\n
As with EF Core 3.0 and 3.1, the EF Core CLI is no longer included in the .NET Core SDK. Before you can execute EF Core migration or scaffolding commands, you’ll have to install this package as either a global or local tool.<\/p>\n
\"dotnet-ef\"<\/p>\n
To install the preview tool globally, first uninstall any existing version with:<\/p>\n
dotnet tool uninstall<\/span> --global dotnet-ef<\/span>\r\n<\/code><\/pre>\n
Then install with:<\/p>\n
dotnet<\/span> tool<\/span> install<\/span> -<\/span>-<\/span>global<\/span> dotnet<\/span>-<\/span>ef<\/span> -<\/span>-<\/span>version<\/span> 5<\/span>.<\/span>0<\/span>.<\/span>0<\/span>-<\/span>preview.6.20312.4<\/span>\r\n<\/code><\/pre>\n
It’s possible to use this new version of the EF Core CLI with projects that use older versions of the EF Core runtime.<\/p>\n
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What’s New in EF Core 5 Preview 6<\/h2>\n
We maintain documentation covering new features introduced into each preview<\/a>.<\/p>\n
Some of the highlights from preview 6 are called out below. This preview also includes several bug fixes.<\/p>\n