EF Core 8 (EF8) Preview 4
Pre-release
Pre-release
·
1438 commits
to main
since this release
EF Core 8 (EF8) Preview 4 is available from NuGet
Preview 4 contains the following new features:
- IN() list queries are not parameterized, causing increased SQL Server CPU usage
- Allow 'unsharing' connection between contexts
- Remove unneeded subquery and projection when using ordering without limit/offset in set operations
- Make SequentialGuidValueGenerator non-allocating
- Support querying over primitive collections
- JSON/Sqlite: use -> and ->> where possible when traversing JSON, rather than json_extract
- Add Generic version of EntityTypeConfiguration Attribute
- NativeAOT/trimming compatibility for Microsoft.Data.Sqlite
- Map collections of primitive types to JSON column in relational database
- Translate DateTimeOffset.ToUnixTime(Seconds|Milliseconds)
- Allow pooling DbContext with singleton services
- Optional RestartSequenceOperation.StartValue
- Generate compiled relational model
- Global query filters produce too many parameters
In addition, Preview 2 contains the following features from Previews 1, 2, and 3:
- Optimize update path for single property JSON element
- JSON columns can be used in compiled models
- Unneeded parentheses removed in SQL queries
- Set operations are supported over non-entity projections with different facets
- Json: add support for Sqlite provider
- SQL Server: Support hierarchyid
- Configuration to opt out of occasionally problematic SaveChanges optimizations
- Add convention types for triggers
- Translate element access of a JSON array
- Raw SQL queries for unmapped types
- Support the new BCL DateOnly and TimeOnly structs for SQL Server
- Translate ElementAt(OrDefault)
- Opt-out of lazy-loading for specific navigations
- Lazy-loading for no-tracking queries
- Reverse engineer Synapse and Dynamics 365 TDS
- Set MaxLength on TPH discriminator property by convention
- Translate ToString() on a string column
- Generic overload of ConventionSetBuilder.Remove
- Lookup tracked entities by primary key, alternate key, or foreign key
- Allow UseSequence and HiLo on non-key properties
- Pass query tracking behavior to materialization interceptor
- Use case-insensitive string key comparisons on SQL Server
- Allow value converters to change the DbType
- Resolve application services in EF services
- Numeric rowersion properties automatically convert to binary
- Allow transfer of ownership of DbConnection from application to DbContext
- Provide more information when 'No DbContext was found' error is generated
See GitHub for all issues resolved in Preview 1, Preview 2, Preview 3, and Preview 4.