EntityFramework6.X 之Index/Cascade Delete Index 可以通过配置索引,提高查询效率 Cascade Delete 若是设置了级联删除,则在删除主体实体的时候,依赖实体将会自动删除或者设置为空,级联删除可以使用在1对1(0),1对多,多对多的关系中。默认情况下EF是自动开启级联删除,但也可以手动关闭 在one-to-one or zero中默认...
CommandTimeout='30'] SET NOCOUNT ON; DELETE FROM [Posts] WHERE [Id] = @p0; SELECT @@ROWCOUNT; -- Executed DbCommand (0ms) [Parameters=[@p0='2'], CommandType='Text', CommandTimeout='30'] SET NOCOUNT ON; DELETE FROM [Posts] WHERE [Id] = @p0; SELECT @@ROWCOUNT; -- Executed ...
CascadeDeleteConvention 类参考 反馈 定义命名空间: Microsoft.EntityFrameworkCore.Metadata.Conventions 程序集: Microsoft.EntityFrameworkCore.dll 包: Microsoft.EntityFrameworkCore v9.0.0 Source: CascadeDeleteConvention.cs 一个约定,用于将所需外键和ClientSetNull可选外键的删除行为Cascade设置为 。
CascadeDeleteEventData.State 属性 参考 反馈 定义 命名空间: Microsoft.EntityFrameworkCore.Diagnostics 程序集: Microsoft.EntityFrameworkCore.dll 包: Microsoft.EntityFrameworkCore v8.0.0 子级正在转换到的状态,通常为“已删除”。 C# 复制 public virtual Microsoft.EntityFrameworkCore.EntityState St...
Using Entity Framework Core 6.0.1 The following code should create a Module model with the HelpCard Foreign Key set, then set the Help Card Foreign Key to Null and save the model to the database, but instead the Cascade Delete is being t...
CascadeDeleteOrphan事件的記錄。 C# 複製 public static void CascadeDeleteOrphanSensitive (this Microsoft.EntityFrameworkCore.Diagnostics.IDiagnosticsLogger<Microsoft.EntityFrameworkCore.DbLoggerCategory.Update> diagnostics, Microsoft.EntityFrameworkCore.ChangeTracking.Internal.Int...
Entity Framework4.3.1, 5.0.0, 6.2.0 WillCascadeOnDelete(Boolean) Configures whether or not cascade delete is on for the relationship. C# publicvoidWillCascadeOnDelete(boolvalue); Parameters value Boolean Value indicating if cascade delete is on or not. ...
Entity Framework 4.3.1, 5.0.0, 6.2.0 WillCascadeOnDelete(Boolean) Configures whether or not cascade delete is on for the relationship. C# Copy public void WillCascadeOnDelete (bool value); Parameters value Boolean Value indicating if cascade delete is on or not. Applies to Entity Framewor...
classMainDbContext:DbContext{publicDbSet<Root>Root{get;set;}protectedoverridevoidOnConfiguring(DbContextOptionsBuilderoptionsBuilder){optionsBuilder.UseInMemoryDatabase("CascadeDeleteTest");}} Version EF Core: 8.0.8 Target framework: net8.0 Operating system: Ubuntu 24.04...
A collection with cascade="all-delete-orphan" was no longer referenced by the owning entity instance: com.betterjavacode.model.Certificate.certificateProperties; nested exception is org.hibernate.HibernateException: A collection with cascade="all-delete-orphan" was no longer ...