实体将“1”添加到字段名称

向表中添加迁移时，该字段是重复的（但以 结尾1）：

            CreateTable(
            "public.t_users",
            c => new
                {
                    id = c.Int(nullable: false, identity: true),
                    login = c.String(),
                    password = c.String(),
                    name = c.String(),
                    role_id = c.Int(nullable: false),
                    role_id1 = c.Int(),
                })
            .PrimaryKey(t => t.id)
            .ForeignKey("public.t_roles", t => t.role_id1)
            .Index(t => t.role_id1);

虽然在数据库中它是一个：

-- Table: public.t_users

-- DROP TABLE public.t_users;

CREATE TABLE public.t_users
(
    name character varying(100) COLLATE pg_catalog."default" NOT NULL,
    login character varying(100) COLLATE pg_catalog."default" NOT NULL,
    password character varying(100) COLLATE pg_catalog."default" NOT NULL,
    role_id integer NOT NULL,
    id integer NOT NULL DEFAULT nextval('t_users_id_seq'::regclass)
)
WITH (
    OIDS = FALSE
)
TABLESPACE pg_default;

ALTER TABLE public.t_users
    OWNER to psp;

如果它只在迁移期间会很好......但是当保存到数据库时也会弹出这个字段......并且自然会发生错误Entity：

BaseMessage = "column \"role_id1\" of relation \"t_users\" does not exist"

模型：

namespace Loyalty.DAL.Models.Authorize
{
    [Table("t_users", Schema = "public")]
    public class User
    {
        [Key]
        public int? id { get; set; }
        public string login { get; set; }
        public string password { get; set; }
        public string name { get; set; }

        public int role_id { get; set; }
        public virtual Role role { get; set; }
    }
}

请解释“如何”，以及他为什么（Entity）添加此字段？