我删除了一些与应用程序相关的表。再试一次syncdb命令

python manage.py syncdb

它显示错误

django.db.utils.ProgrammingError: (1146, "Table 'someapp.feed' doesn't exist")

models.py

class feed(models.Model):
    user = models.ForeignKey(User,null=True,blank=True)
    feed_text = models.CharField(max_length=2000)
    date = models.CharField(max_length=30)
    upvote = models.IntegerField(default=0)
    downvote = models.IntegerField(default=0)

    def __str__(self):
        return feed.content

我该如何获取该应用程序的表格？