django-models - Django 会自动为外键列生成索引吗？

Question

Django 是否自动为外键生成索引，还是仅取决于底层数据库策略？

Answer 1

Django 自动为所有 models.ForeignKey 列创建索引。

来自Django documentation :

A database index is automatically created on the ForeignKey. You can disable this by setting db_index to False. You may want to avoid the overhead of an index if you are creating a foreign key for consistency rather than joins, or if you will be creating an alternative index like a partial or multiple column index.