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[求助帖] Django ORM 的联表查询问题
source link: https://www.v2ex.com/t/800487
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Django3.2
数据库没有做外键，但是在 model 定义的时候写了外键关系，举例来说
class User(model.Model):
id = ...
name = ...
class Group(model.Model):
user = model.ForeignKey(User, db_column='user_id', ...)
...
之后我在使用 drf 时定义了这样一个 serializer
class GroupSerializer(serializers.Serializer):
user_name = serializers.CharField(source='user.name')
结果发现 Django 的查询方法是先查 Group 表，再根据其中的 user_id 一条一条去查 name ，有没有什么办法能让它直接使用 JOIN 获取到序列化器需要的结果？
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