SQLAlchemy仅查找包含特定子项的父项

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('数据库连接字符串')

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

# 创建模型类
Base = declarative_base()

class Parent(Base):
    __tablename__ = 'parents'
    id = Column(Integer, primary_key=True)
    name = Column(String)
    children = relationship("Child", back_populates="parent")

class Child(Base):
    __tablename__ = 'children'
    id = Column(Integer, primary_key=True)
    name = Column(String)
    parent_id = Column(Integer, ForeignKey('parents.id'))
    parent = relationship("Parent", back_populates="children")

# 查询包含特定子项的父项
parents = session.query(Parent).join(Child).filter(Child.name == '特定子项').all()

# 打印结果
for parent in parents:
    print(parent.name)

# 关闭会话
session.close()