classTinyUrl(Model):id=BigAutoField()user_id=IntegerField(null=False)short_uuid=CharField(max_length=255,null=False,help_text='lengthis6digits')long_url_hash=CharField(max_length=64,null=False)long_url=CharField(max_length=2048,null=False)created_at=DateTimeField(null=False,constraints=[SQL('DEFAULTCURRENT_TIMESTAMP')],help_text='使用数据库时间')updated_at=DateTimeField(null=False,constraints=[SQL('DEFAULTCURRENT_TIMESTAMP'),SQL('ONUPDATECURRENT_TIMESTAMP'),])classMeta:database=dbtable_name='tiny_url'索引=((('short_uuid',),True),(('user_id','long_url_hash'),True),)只使用索引参考文档：peeweeMulti-columnindexes
