EF Core 5.0 Preview 3

EF Core 5.0 preview 3 is on NuGet now!

New features in preview 3 include:

• Filtered Include
• Command-line parameters for namespaces when scaffolding a DbContext or generating migrations
• Command-line support for passing a connection string to [dotnet ef database update]/[Update-Database]
• EnableDetailedErrors provides more information in query mapping exceptions
• Improved support for using Cosmos partition keys in queries
• New ModelBuilder API for navigation properties
• Support for the SQL Server DATALENGTH function

Remember that all these preview 1 and 2 features are also included in preview 3:

• Use a C# attribute to specify a property backing field
• Complete discriminator mapping
• Performance improvements in Microsoft.Data.Sqlite
• Simple Logging
• Simple way to get generated SQL
• Use a C# attribute to indicate that an entity has no key
• Connection or connection string can be changed on initialized DbContext
• Change-tracking proxies
• Enhanced debug views
• Improved handling of database null semantics
• Indexer properties
• Generation of check constraints for enum mappings
• IsRelational method for differential model building
• Cosmos optimistic concurrency with ETags
• Query translations for more DateTime constructs
• Query translations for more byte array constructs
• Query translation for Reverse
• Query translation for bitwise operators
• Query translation for strings on Cosmos
• Use a C# attribute to specify a property backing field
• Complete discriminator mapping
• Performance improvements in Microsoft.Data.Sqlite

The .NET Blog announcement has installation instructions and full details.