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我的目标是从Excel工作表中读取数据并在SQL服务器上创建数据库。我正在尝试使用SQLalchemy编写示例代码，而我对它很陌生。我至今的代码是：Autoflush错误和filter_by（）查询给出意想不到的结果
import time
from sqlalchemy import create_engine, Column, Integer, Date, String, Table, MetaData,table
from sqlalchemy.ext.declarative import declarative_base
from sqlalchemy.orm import sessionmaker
engine = create_engine('sqlite:///:memory:', echo = False)
Base = declarative_base()
class blc(Base):
__tablename__ = 'BLC_Databse'
date = Column(String, primary_key = True)
RES = Column(String)
BTTLCOLUMN = Column(String)
CS_HR = Column(Integer)
Base.metadata.create_all(engine)
sample = blc(date=time.strftime("%m/%d/%y") , RES = 'BDY_21', BTTLCOLUMN = '2075', CS_HR = 563)
Session = sessionmaker(bind=engine)
session = Session()
sample2 = blc(date=time.strftime("%m/%d/%y") , RES = 'BDY_21', BTTLCOLUMN = '2076', CS_HR = 375)
session.add(sample2)
session.commit()
with session.no_autoflush:
result = session.query(blc).filter_by(RES = 'BDY_21').first()
print(result)
当我进行筛选查询（这我假设它类似于其中SQL子句）它给<__main__.blc object at 0x00705770>错误 后来，我打算有插入子句放在一个循环中，它将从Excel工作表读取数据。