我正在使用peewee（ORM）创建一个小型Python-MySQL应用程序。 我的代码完全在一个单一的文件，内容如下： import os
from peewee import *
from playhouse.db_url import connect
# Connect to the database URL defined in the environment, falling
我有两个型号的存储和抽屉 class Storage(BaseModel):
id = PrimaryKeyField()
name = CharField()
description = CharField(null=True)
class Drawer(BaseModel):
id = PrimaryKeyField()
name = Ch
我试图总结两列中的值并截断日期中的日期字段。我已经构造SQL查询来做到这一点（工作）： SELECT date_trunc('day', date) AS Day, SUM(fremont_bridge_nb) AS
Sum_NB, SUM(fremont_bridge_sb) AS Sum_SB FROM bike_count GROUP BY Day
ORDER BY Day;
但我再