SQLModel -如何仅使用基本模型中的几个字段

from sqlmodel import SQLModel, Field, create_engine, Session

class User(SQLModel, table=True):
    id: int = Field(default=None, primary_key=True)
    name: str
    email: str
    age: int
    address: str

class UserSummary(User):
    id: int = Field(default=None, primary_key=True)
    name: str
    email: str

# 创建数据库连接
engine = create_engine("sqlite:///database.db")

# 创建表
SQLModel.metadata.create_all(engine)

# 使用子模型
with Session(engine) as session:
    user_summary = UserSummary.from_orm(session.exec(select(User)).first())
    print(user_summary.id, user_summary.name, user_summary.email)

class UserSummary(User):
    id: int = Field(default=None, primary_key=True)
    name: str
    email: str
    age: int = None  # 允许为空
    address: str = ""  # 设置默认值