我们希望一次检索所有表记录如何在django orm中实现类似sql的quries
SQL查询示例:
select * from Company_info
inner join Bank_info on Bank_info.manufacturer = Company_info.manufacturer
inner join Company_info on Company_info.manufacturer = Company_info.manufacturer
inner join Transport_info on Transport_info.manufacturer = Company_info.manufacturer
class Manufacturer(models.Model):
name = models.CharField(max_length=42)
class Bank_info(models.Model):
account = models.CharField(max_length=42)
manufacturer = models.ForeignKey(Manufacturer, on_delete= models.CASCADE)
class Company_info(models.Model):
name= models.CharField(max_length=42)
manufacturer = models.ForeignKey(Manufacturer, on_delete= models.CASCADE)
class Transport_info(models.Model):
name= models.CharField(max_length=42)
manufacturer = models.ForeignKey(Manufacturer, on_delete= models.CASCADE)
