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model/wl_emp_model.py

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+from sqlalchemy import Column, DateTime, ForeignKey, Integer, String, func
+from sqlalchemy.orm import relationship
+
+from database import Base
+
+
+class Emp(Base):
+    __tablename__ = "wl_emp"
+
+    # 学号做主键，同时做外键指向学生表，长度跟 Student.stu_no 保持一致
+    stu_no = Column(String(20), ForeignKey('wl_student.stu_no'), primary_key=True)
+    emp_open_time = Column(DateTime, default="2026-11-30 18:18:18")
+    offer_time = Column(DateTime, default=func.now())
+    company_name = Column(String(100), nullable=False)
+    salary = Column(Integer, nullable=False, default=15000)
+
+    student = relationship("Student", back_populates="emp")
+
+    # 逻辑删除：0 正常 1 已删除
+    is_deleted = Column(Integer, default=0, comment='逻辑删除: 0正常 1删除')
+
+    def __repr__(self):
+        return f"<Emp(stu_no={self.stu_no}, company='{self.company_name}')>"