Question

我只是想保持安全。我有这个型号：

class Player(models.Model):
     name = models.CharField(max_length=64, db_index=True)
     ...  

class Match(models.Model):
     date = models.DateField()
     playerA = models.ForeignKey(Player, related_name='playerA')   # neither here db_index
     playerB = models.ForeignKey(Player, related_name='playerB')   # nor here db_index
     ...

db_index的使用是否正确？而且，无需为playerA或playerB添加额外的索引？

Answer 1

Django自动为所有models.ForeignKey列创建索引。只需运行“./manage.py sql appname”，您就会看到用于创建索引的sql语句。

将db_index与外键一起使用

1 个答案: