SQLAlchemy MySQL复杂排序依据

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@host:port/database')

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

# 定义映射类
Base = declarative_base()

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

# 查询并排序
query = session.query(User).order_by(User.name.asc(), User.age.desc())
results = query.all()

# 打印结果
for user in results:
    print(user.name, user.age)