ColumnsBuilder.Column Method

Definition

Namespace:

Microsoft.EntityFrameworkCore.Migrations.Operations.Builders

Assembly:

Microsoft.EntityFrameworkCore.Relational.dll

Package:

Microsoft.EntityFrameworkCore.Relational v9.0.0

Overloads

Column<T>(String, Nullable<Boolean>, Nullable<Int32>, Boolean, String, Boolean, Object, String, String, Nullable<Boolean>, String, String, Nullable<Int32>, Nullable<Int32>, Nullable<Boolean>)

Adds a AddColumnOperation to the CreateTableOperation.

Column<T>(String, Nullable<Boolean>, Nullable<Int32>, Boolean, String, Boolean, Object, String, String, Nullable<Boolean>, String, String, Nullable<Int32>, Nullable<Int32>, Nullable<Boolean>)

Source:

ColumnsBuilder.cs

Adds a AddColumnOperation to the CreateTableOperation.

public virtual Microsoft.EntityFrameworkCore.Migrations.Operations.Builders.OperationBuilder<Microsoft.EntityFrameworkCore.Migrations.Operations.AddColumnOperation> Column<T> (string? type = default, bool? unicode = default, int? maxLength = default, bool rowVersion = false, string? name = default, bool nullable = false, object? defaultValue = default, string? defaultValueSql = default, string? computedColumnSql = default, bool? fixedLength = default, string? comment = default, string? collation = default, int? precision = default, int? scale = default, bool? stored = default);

abstract member Column : string * Nullable<bool> * Nullable<int> * bool * string * bool * obj * string * string * Nullable<bool> * string * string * Nullable<int> * Nullable<int> * Nullable<bool> -> Microsoft.EntityFrameworkCore.Migrations.Operations.Builders.OperationBuilder<Microsoft.EntityFrameworkCore.Migrations.Operations.AddColumnOperation>
override this.Column : string * Nullable<bool> * Nullable<int> * bool * string * bool * obj * string * string * Nullable<bool> * string * string * Nullable<int> * Nullable<int> * Nullable<bool> -> Microsoft.EntityFrameworkCore.Migrations.Operations.Builders.OperationBuilder<Microsoft.EntityFrameworkCore.Migrations.Operations.AddColumnOperation>

Public Overridable Function Column(Of T) (Optional type As String = Nothing, Optional unicode As Nullable(Of Boolean) = Nothing, Optional maxLength As Nullable(Of Integer) = Nothing, Optional rowVersion As Boolean = false, Optional name As String = Nothing, Optional nullable As Boolean = false, Optional defaultValue As Object = Nothing, Optional defaultValueSql As String = Nothing, Optional computedColumnSql As String = Nothing, Optional fixedLength As Nullable(Of Boolean) = Nothing, Optional comment As String = Nothing, Optional collation As String = Nothing, Optional precision As Nullable(Of Integer) = Nothing, Optional scale As Nullable(Of Integer) = Nothing, Optional stored As Nullable(Of Boolean) = Nothing) As OperationBuilder(Of AddColumnOperation)

Type Parameters

T

The CLR type of the column.

Parameters

type

String

The database type of the column.

unicode

Nullable<Boolean>

Indicates whether or not the column will store Unicode data.

maxLength

Nullable<Int32>

The maximum length for data in the column.

rowVersion

Boolean

Indicates whether or not the column will act as a rowversion/timestamp concurrency token.

name

String

The column name.

nullable

Boolean

Indicates whether or not the column can store null values.

defaultValue

Object

The default value for the column.

defaultValueSql

String

The SQL expression to use for the column's default constraint.

computedColumnSql

String

The SQL expression to use to compute the column value.

fixedLength

Nullable<Boolean>

Indicates whether or not the column is constrained to fixed-length data.

comment

String

A comment to be applied to the column.

collation

String

A collation to be applied to the column.

precision

Nullable<Int32>

The maximum number of digits for data in the column.

scale

Nullable<Int32>

The maximum number of decimal places for data in the column.

stored

Nullable<Boolean>

Whether the value of the computed column is stored in the database or not.

Returns

OperationBuilder<AddColumnOperation>

The same builder so that multiple calls can be chained.

Remarks

Note that for nullable parameters a null value means not-specified.