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Class DeleteDefaultConstraintExpression

Represents an expression used in a database migration to delete a default constraint from a table column.

Inheritance

object

MigrationExpressionBase

Namespace: Umbraco.Cms.Infrastructure.Migrations.Expressions.Delete.Expressions

Assembly: Umbraco.Infrastructure.dll

Syntax

public class DeleteDefaultConstraintExpression : MigrationExpressionBase, IMigrationExpression

Constructors

DeleteDefaultConstraintExpression(IMigrationContext)

Initializes a new instance of the DeleteDefaultConstraintExpression class, which is used to define an expression for deleting a default constraint in a database migration.

Declaration

public DeleteDefaultConstraintExpression(IMigrationContext context)

Parameters

Type	Name	Description
IMigrationContext	context	The IMigrationContext providing migration-specific information and services.

Properties

ColumnName

Gets or sets the name of the column associated with the default constraint to delete.

Declaration

public virtual string? ColumnName { get; set; }

Property Value

Type	Description
string

ConstraintName

Gets or sets the name of the default constraint to delete.

Declaration

public virtual string? ConstraintName { get; set; }

Property Value

Type	Description
string

HasDefaultConstraint

Gets or sets a value indicating whether a default constraint is present on the column.

Declaration

public virtual bool HasDefaultConstraint { get; set; }

Property Value

Type	Description
bool

TableName

Gets or sets the name of the table from which the default constraint will be deleted.

Declaration

public virtual string? TableName { get; set; }

Property Value

Type	Description
string

Methods

GetSql()

Declaration

protected override string GetSql()

Returns

Type	Description
string