SqlServerMigrationsSqlGenerator.DropDescription 方法

参考

定义

命名空间:: Microsoft.EntityFrameworkCore.Migrations

程序集:: Microsoft.EntityFrameworkCore.SqlServer.dll

包:: Microsoft.EntityFrameworkCore.SqlServer v3.0.0

包:: Microsoft.EntityFrameworkCore.SqlServer v3.1.0

包:: Microsoft.EntityFrameworkCore.SqlServer v5.0.0

包:: Microsoft.EntityFrameworkCore.SqlServer v6.0.0

包:: Microsoft.EntityFrameworkCore.SqlServer v7.0.0

包:: Microsoft.EntityFrameworkCore.SqlServer v8.0.0

重要

一些信息与预发行产品相关，相应产品在发行之前可能会进行重大修改。对于此处提供的信息，Microsoft 不作任何明示或暗示的担保。

为表和列的说明生成 drop 命令。

protected virtual void DropDescription (Microsoft.EntityFrameworkCore.Migrations.MigrationCommandListBuilder builder, string schema, string table, string column = default, bool omitSchemaVariable = false);

protected virtual void DropDescription (Microsoft.EntityFrameworkCore.Migrations.MigrationCommandListBuilder builder, string schema, string table, string column = default, bool omitVariableDeclarations = false);

protected virtual void DropDescription (Microsoft.EntityFrameworkCore.Migrations.MigrationCommandListBuilder builder, string? schema, string table, string? column = default, bool omitVariableDeclarations = false);

abstract member DropDescription : Microsoft.EntityFrameworkCore.Migrations.MigrationCommandListBuilder * string * string * string * bool -> unit
override this.DropDescription : Microsoft.EntityFrameworkCore.Migrations.MigrationCommandListBuilder * string * string * string * bool -> unit

abstract member DropDescription : Microsoft.EntityFrameworkCore.Migrations.MigrationCommandListBuilder * string * string * string * bool -> unit
override this.DropDescription : Microsoft.EntityFrameworkCore.Migrations.MigrationCommandListBuilder * string * string * string * bool -> unit

Protected Overridable Sub DropDescription (builder As MigrationCommandListBuilder, schema As String, table As String, Optional column As String = Nothing, Optional omitSchemaVariable As Boolean = false)

Protected Overridable Sub DropDescription (builder As MigrationCommandListBuilder, schema As String, table As String, Optional column As String = Nothing, Optional omitVariableDeclarations As Boolean = false)

参数

builder: MigrationCommandListBuilder

用于生成命令的命令生成器。

schema: String

表的架构。

table: String

表的名称。

column: String

列的名称。

omitSchemaVariableomitVariableDeclarations: Boolean

指示是否 @defaultSchema 应省略变量声明。

适用于