基于自身列比较的SQLAlchemy过滤

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

# 创建数据库连接
engine = create_engine('mysql://username:password@localhost/db_name')
Session = sessionmaker(bind=engine)
session = Session()

# 创建数据模型
Base = declarative_base()

class User(Base):
    __tablename__ = 'users'
    id = Column(Integer, primary_key=True)
    name = Column(String(50))
    age = Column(Integer)

# 进行基于自身列比较的过滤查询
users = session.query(User).filter(User.age > User.id).all()

# 打印查询结果
for user in users:
    print(user.name, user.age)

# 关闭数据库连接
session.close()