MigrationsSqlGenerator.ComputedColumnDefinition 方法

定义

命名空间:

Microsoft.EntityFrameworkCore.Migrations

程序集:

Microsoft.EntityFrameworkCore.Relational.dll

包:

Microsoft.EntityFrameworkCore.Relational v8.0.0

为给定列元数据的计算列定义生成 SQL 片段。

protected virtual void ComputedColumnDefinition (string? schema, string table, string name, Microsoft.EntityFrameworkCore.Migrations.Operations.ColumnOperation operation, Microsoft.EntityFrameworkCore.Metadata.IModel? model, Microsoft.EntityFrameworkCore.Migrations.MigrationCommandListBuilder builder);

abstract member ComputedColumnDefinition : string * string * string * Microsoft.EntityFrameworkCore.Migrations.Operations.ColumnOperation * Microsoft.EntityFrameworkCore.Metadata.IModel * Microsoft.EntityFrameworkCore.Migrations.MigrationCommandListBuilder -> unit
override this.ComputedColumnDefinition : string * string * string * Microsoft.EntityFrameworkCore.Migrations.Operations.ColumnOperation * Microsoft.EntityFrameworkCore.Metadata.IModel * Microsoft.EntityFrameworkCore.Migrations.MigrationCommandListBuilder -> unit

Protected Overridable Sub ComputedColumnDefinition (schema As String, table As String, name As String, operation As ColumnOperation, model As IModel, builder As MigrationCommandListBuilder)

参数

schema

String

包含表的架构，或使用 null 默认架构。

table

String

包含列的表。

name

String

列名称。

operation

ColumnOperation

列元数据。

model

IModel

如果存在没有模型的操作，则 null 可能是目标模型。

builder

MigrationCommandListBuilder

用于添加 SQL 片段的命令生成器。