56 lines
1.4 KiB
Python
56 lines
1.4 KiB
Python
"""敏感性分析模型
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记录价格变动对利润的敏感性分析结果
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"""
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from typing import TYPE_CHECKING
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from decimal import Decimal
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from sqlalchemy import BigInteger, ForeignKey, DECIMAL
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from sqlalchemy.orm import Mapped, mapped_column, relationship
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from app.models.base import BaseModel
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if TYPE_CHECKING:
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from app.models.profit_simulation import ProfitSimulation
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class SensitivityAnalysis(BaseModel):
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"""敏感性分析表"""
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__tablename__ = "sensitivity_analyses"
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simulation_id: Mapped[int] = mapped_column(
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BigInteger,
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ForeignKey("profit_simulations.id"),
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nullable=False,
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index=True,
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comment="模拟ID"
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)
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price_change_rate: Mapped[Decimal] = mapped_column(
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DECIMAL(5, 2),
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nullable=False,
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comment="价格变动率(%)：如 -20, -10, 0, 10, 20"
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)
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adjusted_price: Mapped[Decimal] = mapped_column(
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DECIMAL(12, 2),
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nullable=False,
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comment="调整后价格"
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)
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adjusted_profit: Mapped[Decimal] = mapped_column(
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DECIMAL(14, 2),
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nullable=False,
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comment="调整后利润"
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)
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profit_change_rate: Mapped[Decimal] = mapped_column(
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DECIMAL(5, 2),
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nullable=False,
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comment="利润变动率(%)"
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)
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# 关系
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simulation: Mapped["ProfitSimulation"] = relationship(
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"ProfitSimulation",
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back_populates="sensitivity_analyses"
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)
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