mysql – 如何在django中的字段上进行数据库分区？

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我有多个字段的django模型,它被映射到MySQL数据库,现在模型中有一个日期时间字段,我想在其中设置partitioning.

该模型如下所示：

class Packet(models.Model):
    device = models.ForeignKey(Device)
    packet_time = models.DateTimeField(default=timezone.now())
    # Location Details
    signal = models.CharField(max_length=2, default='A')
    lat = models.FloatField(default=None, null=True)
    lat_indicator = models.CharField(max_length=1, default='')
    lng = models.FloatField(default=None, null=True)
    lng_indicator = models.CharField(max_length=1, default='')
    address = models.CharField(max_length=64, default='NA')
    speed = models.FloatField(default=None, null=True)
    orientation = models.FloatField(default=None, null=True)
    #House Keeping Items
    dor = models.DateTimeField(default=timezone.now()) # <= Want to partition this for weekly basis. 
    dirty = models.BooleanField(default=False)

请告诉我如何实现这一目标.

解决方法:

正如Max的评论中所提到的,django-db-parti不赞成使用architech.Github链接可用于here,并在readthedocs提供了更多文档

原答案：

django-db-parti包存在,似乎符合您的标准. Github链接here.

该文档的MySQL部分指出：

MySQL’s partitioning implementation in Django DB Parti is done in a
mixed way, half at the python level and half at the database level.
Unfortunately MySQL doesn’t support dynamic sql in triggers or
functions that are called within triggers, so the only way to create
partitions automatically is to calculate everything at the python
level, then to create needed sql statements based on calculations and
issue that statement into the database.

并具有以下限制

• Not all partitioning types are supported. New types will be added in next releases of Django DB Parti.
• Partitioning is not available for bulk inserts (i.e. Django’s bulk_create() method) because it doesn’t call model’s save() method
  which this backend relies on. Currently there is no known way to
  remove this limitation.
• New partitions can be created only from lower to higher, you can overcome this with MySQL’s special command REORGANIZE PARTITION which
  you have to issue from the database console. You can read more about
  it at the MySQL’s documentation. We plan to remove this limitation in
  one of the future releases of Django DB Parti.

分区的configuration出现在模型的Meta类中.

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