Program EF 9.0 wprowadza znaczne ulepszenia dostawcy platformy EF Core dla usługi Azure Cosmos DB; znaczące części dostawcy zostały przepisane, aby zapewnić nowe funkcje, umożliwić nowe formy zapytań i lepiej dopasować dostawcę do najlepszych rozwiązań usługi ...
When configuring translation for a user-defined function using HasTranslation method, the arguments to the function were provided as IReadOnlyCollection<SqlExpression>.New behaviorIn EF Core 6.0, the arguments are now provided as IReadOnlyList<SqlExpression>....
https://github.com/skclusive/EFLeftJoinBug Unhandled exception. System.InvalidOperationException: Nullable object must have a value. at lambda_method17(Closure , QueryContext , DbDataReader , ResultContext , SingleQueryResultCoordinator ) at Microsoft.EntityFrameworkCore.Query.Internal.SingleQueryingEnume...
If the object is not in the cache the benefits of Find are negated, but the syntax is still simpler than a query by key. If auto detect changes is enabled the cost of the Find method may increase by one order of magnitude, or even more depending on the complexity of your model an...
EF Core 5.0 allows an entity type to mapped to a "defining query". (This was partially supported in previous versions, but is much improved and has different syntax in EF Core 5.0.) For example, consider two tables; one with modern posts; the other with legacy posts. The modern posts ...
Enhanced syntax for adding/editing attributes via code Fix for generate-on-save for both Framework and .NET Core projects. 1.0.2.0 [NEW]EFCore T4 template now available 1.0.1.0 Fix to EF6 T4 for issue where column names in many-to-many association join tables were flipped ...
MethodNMeanErrorStdDev NoShardingIndexFirstOrDefaultAsync 10 1.512 ms 0.0071 ms 0.0063 ms ShardingIndexFirstOrDefaultAsync 10 1.567 ms 0.0127 ms 0.0113 ms 针对未分片数据的查询性能,可以看出10次查询差距为0.05ms,单次查询损耗约为5微妙=0.005毫秒,损耗占比为3%, 结论:efcore 原生查询和sharding-core的查询...
Feature1 : Join query Super simple query syntax varquery = db.Queryable<Order>() .LeftJoin<Custom> ((o, cus) => o.CustomId == cus.Id) .LeftJoin<OrderItem> ((o, cus, oritem ) => o.Id == oritem.OrderId) .LeftJoin<OrderItem> ((o, cus, oritem , oritem2) => o.Id ==...
@AlexZIn CTP5, the MapSingleType and MapHierarchy methods were replaced by a single Map method and the ability to rename columns and tables directly. This is the code you'd need to do to use TPT and do the column name changes you had above: public class MyContext : DbContext { publi...
Serenity is a ASP.NET Core / TypeScript application platform which has been built on open source technologies. It aims to make development easier while reducing maintenance costs by avoiding boiler-plate code, reducing the time spent on repetitive tasks and applying best software design practices. ...