如何使用django将一个数据库一分为二

Question

我有一个大数据 table（在 Postgresql 中），我想将其转换为两个 table 因此，我需要第一个 table 中大 table 中的某些列 Аnd 在第二个 table 我需要转移剩余的列

这是我的老model.py

class HV(models.Model):
    
    from direction.models import Project

    id = models.AutoField(primary_key=True)
    name = models.CharField(max_length=60)
    address = models.CharField(max_length=90)
    username = models.CharField(max_length=60)
    password = models.BinaryField()
    kind = models.CharField(max_length=60)
    enabled = models.BooleanField(default=True)
    availability = models.BooleanField(default=True)
    time_unavailable = models.DateTimeField(null=True)
    direction = models.ForeignKey(Department, on_delete=models.PROTECT, null=True, default=None)
    project = models.ForeignKey(Project, on_delete=models.PROTECT, null=True, default=None)

    class Meta:
        managed = True
        db_table = 'hv_list_service'

    def __str__(self):
        return self.name

和我的新 models.py

class ClusterName(models.Model):

    id = models.AutoField(primary_key=True)
    name = models.CharField(max_length=60)
    kind = models.CharField(null=True, max_length=10)
    enabled = models.BooleanField(default=True)
    availability = models.BooleanField(default=True)
    time_availability = models.DateTimeField()
    direction_id = models.ForeignKey(Department, on_delete=models.PROTECT)
    project_id = models.ForeignKey(Project, on_delete=models.PROTECT)

    class Meta:
        managed = True
        db_table = 'vmlist_cluster_name'

    def __str__(self):
        return self.name

class ClusterPooling(models.Model):

    id = models.AutoField(primary_key=True)
    address = models.CharField(null=True, max_length=120)
    username = models.CharField(null=True, max_length=50)
    password = models.BinaryField(null=True)
    cluster_name_id = models.ForeignKey(ClusterName, null=True, on_delete=models.PROTECT)
    active = models.BooleanField(null=True)

    class Meta:
        managed = True
        db_table = 'vmlist_cluster_polling'

    def __str__(self):
        return self.address

我知道您可以使用 Django 将数据从一个 table 传输到另一个，但我不知道脚本应该是什么样子

Answer 1

我觉得你可以试试用django导入导出包https://django-import-export.readthedocs.io/en/latest/

Answer 2

完成此操作的最简单方法是在 psql 中执行这些命令

INSERT INTO vmlist_cluster_name (id,name,kind,enabled,availability,time_availability,direction_id_id,project_id_id)
SELECT id, name, kind,enabled ,availability ,time_unavailable ,direction_id ,project_id FROM public.hv_list_service


INSERT INTO vmlist_cluster_polling (id,address,username,password)
SELECT id, address, username, password FROM public.hv_list_service

如何使用django将一个数据库一分为二

how to split one database into two with django

python

django

postgresql