cassandra cqlengine中的varchar列类型

Question

如何在django cassandra模型中定义varchar字段。

from cassandra.cqlengine import columns
from django_cassandra_engine.models import DjangoCassandraModel

class ChatEvent(DjangoCassandraModel):
    interview_id = columns.UUID(partition_key=True)
    fire_time = columns.DateTime(primary_key=True, clustering_order="DESC")
    id = columns.UUID(primary_key=True)
    type = //to be varchar type
    data = columns.Text(required=True)
    created_by = columns.UUID(required=True)

本文档列出了所有数据类型，但它没有varchar类型的https://docs.datastax.com/en/drivers/python/2.5/api/cassandra/cqlengine/columns.html#:~:text=Columns%20in%20your%20models%20map,one%20non%2Dprimary%20key%20column。

Answer 1

varchar是text字段的别名(参见答案here)，您需要使用CqlEngine的Text数据类型。