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假设我有两个模型

class Student(models.Model):
    name = models.CharField(max_length = 60,blank= False,)
    subject = models.CharField(max_length = 60,blank=False)
    marks = models.IntegerField(default =0,blank=True)
    teacher = models.CharField(max_length = 60,blank=False)

和另一个模型

class EncryptedStudent(models.Model):
    name = models.CharField(max_length = 60)
    subject = pgcrypto.EncryptedCharField(blank=False)
    marks = pgcrypto.EncryptedIntegerField(default = 0,blank= True)
    teacher = pgcrypto.EncryptedCharField(blank=False)

现在我想查询数据库。会有时差吗?如何评估任何时差?

我正在使用pgcrypto模块。这是github链接

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