https://docs.microsoft.com/en-us/ef/core/querying/filters modelBuilder.Entity<Post>().HasQueryFilter(p => !p.IsDeleted); 比较全面的实现可参考: https://gunnarpeipman.com/ef-core-global-query-filters/ 需要注意Cache问题: https://docs.microsoft.com/en-us/ef/core/modeling/dynamic-model https...
However, you can define a single filter with multiple conditions using the logical AND operator (&& in C#).Use of navigationsYou can also use navigations in defining global query filters. Using navigations in query filter will cause query filters to be applied recursively. When EF Core ...
Extension for Entity Framework that allows you to create and manage multiple query filters. For EF Core: 5-7. GitHub repository Pagination.EntityFrameworkCore.Extensions This is a library for Pagination on EntityFrameworkCore. Works well with Entity Framework Core as an extension, and supports both...
EF Core不支持模型优先,推荐使用代码优先,遗留系统可以使用Scaffold-DbContext来生成代码实现类似DBFirst的效果,但是推荐用Code First。 2、EF会对实体上的标注做校验,EF Core追求轻量化,不校验。 3、熟悉EF的话,掌握EFCore会很容易,很多用法都移植过来了。EF Core又增加了很多新东西。 4、EF中的一些类的命...
As of 2.0 multiple HasQueryFilter() calls on EntityTypeBuilder result in only the latest one being used. It would be nice if multiple query filters could be defined this way. Example: protected override void OnModelCreating(ModelBuilder ...
A typical scenario involving context state would be a multi-tenant ASP.NET Core application, where the context instance has atenant IDwhich is taken into account by queries (seeGlobal Query Filtersfor more details). Since the tenant ID needs to change with each web request, we need to go ...
builder.HasQueryFilter(a=>a.IsDeleted==false); 如果需要屏蔽全局查询筛选器 varitem = ctx.Articles.IgnoreQueryFilters().Take(3).ToArray(); 《11》EF Core悲欢锁,基于MySQL数据库 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17
A typical scenario involving context state would be a multi-tenant ASP.NET Core application, where the context instance has atenant IDwhich is taken into account by queries (seeGlobal Query Filtersfor more details). Since the tenant ID needs to change with each web request, we need to go ...
EF Core 5.0 中引入拆分查询功能以避免“笛卡尔爆炸”问题,可以将指定 LINQ 查询拆分为多个 SQL 查询,仅在使用Include时可用。 单个EF查询调用AsSplitQuery方法启用拆分查询。也可以全局启用拆分查询,在设置应用程序数据库连接上下文时调用UseQuerySplittingBehavior开启全局拆分。
Global query filters produce too many parameters 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 ...