基于django 的orm中非主键自增的实现方式

class ProductSpu(models.Model):
  """
  商品表
  """
  _database = 'payment'

  id = models.UUIDField(primary_key=True, default=uuid.uuid4, db_column='c_id')
  product_no = models.IntegerField('商品号', blank=True, auto_created=True, db_column='c_product_no')
  name = models.CharField(verbose_name='商品名称', max_length=100, db_column='c_name')

CREATE TABLE `ehr-payment`.`t_product_spu` (
 `c_id` char(32) NOT NULL,
 `c_product_no` int(11) NOT NULL AUTO_INCREMENT COMMENT '商品编码',
 `c_name` varchar(100) NOT NULL COMMENT '商品名称',
 PRIMARY KEY (`c_id`),
 UNIQUE KEY `c_product_no` (`c_product_no`)
) ENGINE=InnoDB AUTO_INCREMENT=100001 DEFAULT CHARSET=utf8 COMMENT='商品表';

class Student(models.Model):
  name = models.CharField(max_length=16)
  sex = models.CharField(max_length=4)

class Student(models.Model):
  id = models.AutoField(primary_key=True)
  name = models.CharField(max_length=16)
  sex = models.CharField(max_length=4)

class Student(models.Model):
  u_id = models.IntegerField(primary_key=True)
  name = models.CharField(max_length=16)
  sex = models.CharField(max_length=4)