SQLAlchemy查找存在另一列的所有值的最后一个列值

from sqlalchemy import create_engine, select
from sqlalchemy.orm import sessionmaker
from sqlalchemy.ext.declarative import declarative_base
from sqlalchemy import Column, Integer, String

# 创建数据库连接
engine = create_engine('数据库连接字符串')

# 创建会话
Session = sessionmaker(bind=engine)
session = Session()

# 定义模型类
Base = declarative_base()

class MyTable(Base):
    __tablename__ = 'my_table'
    id = Column(Integer, primary_key=True)
    column1 = Column(String)
    column2 = Column(String)

# 查询存在另一列的所有值的最后一个列值
subquery = session.query(MyTable.column2).filter(MyTable.column1 == '某个值').subquery()
query = session.query(MyTable.column2).filter(MyTable.column2.in_(subquery)).order_by(MyTable.id.desc()).limit(1)
result = query.scalar()

print(result)