public override void Apply()
{
Database.AddColumn("Users", new Column("ClientId", DbType.Guid));
Database.RemoveColumn("Users", "CompanyId");
Database.RemoveColumn("BodyTypes", "CompanyId");
Database.RemoveColumn("Clients", "CompanyId");
Database.RemoveColumn("DocumentTypes", "CompanyId");
Database.RemoveColumn("FieldPropertyItems", "CompanyId");
Database.RemoveColumn("FieldPropertyVisibilityItems", "CompanyId");
Database.RemoveColumn("Orders", "CompanyId");
Database.RemoveColumn("PickingTypes", "CompanyId");
Database.RemoveColumn("ProductTypes", "CompanyId");
Database.RemoveColumn("Roles", "CompanyId");
Database.RemoveColumn("ShippingWarehouses", "CompanyId");
Database.AddColumn("ShippingWarehouses", new Column("ClientId", DbType.Guid));
Database.RemoveColumn("Warehouses", "CompanyId");
Database.AddColumn("Warehouses", new Column("ProviderId", DbType.Guid));
Database.RemoveColumn("Shippings", "CompanyId");
Database.RemoveColumn("Tonnages", "CompanyId");
Database.RemoveColumn("TransportCompanies", "CompanyId");
Database.RemoveColumn("VehicleTypes", "CompanyId");
Database.RemoveTable("Companies");
}